an aqueous solution of hydrobromic acid is standardized by titration with a 0.162 m solution of barium hydroxide. if 29.3 ml of base are required to neutralize 25.9 ml of the acid, what is the molarity of the hydrobromic acid solution? m hydrobromic acid

Answers

Answer 1

The molarity of hydrobromic acid is 0.2909 M and molarity of barium hydroxide is 0.1517 M.

The balanced chemical reaction of hydrobromic acid(HBr) and barium hydroxide(Ba(OH)2) is :2HBr(aq) + Ba(OH)2(aq)     BaBr2(aq) + 2H2O(l)

So for every 2 moles of hydrobromic acid (acid) 1 mole of barium hydroxide(base) is used for neutralisation.

It is given that 22.0ml of 0.162M solution of barium hydroxide is used for complete neutralisation So no of millimoles of base used =22*0.162=3.564

Number of millimoles of acid required=2*3.564=7.128

Let x be the molarity of acid.then x multiplied by volume(in ml) would give the number of millimoles as molarity=moles/volume7.128=x*24.5x=0.2909

So molarity of hydrobromic acid is 0.2909 M

The balanced chemical reaction of hydroiodic acid (HCl) and barium hydroxide(Ba(OH)2) is :2HI (aq) + Ba(OH)2 (aq)    Bal2(aq) +2H2O(l)

So for every 2 moles of hydroiodic acid (acid) 1 mole of barium hydroxide(base) is used for neutralisation.

It is given that 18.8 ml of 0.197M solution of hydroiodic acid is used for complete neutralisation

So no of millimoles of acid used = 18.8*0.197=3.7036Number of millimoles of base required=3.7036/2=1.8518

Let x be the molarity of base.then x multiplied by volume(in ml) would give the number of millimoles as molarity=moles/volume1.8518=x*12.2x=0.1517So molarity of barium hydroxide is 0.1517 M

Therefore, molarity of hydrobromic acid is 0.2909 M and molarity of barium hydroxide is 0.1517 M.

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Related Questions

what is the net ionic equation for CrCl3 + Ba(NO3)2

Answers

Answer:

[tex]3Ba^{2+}\text{ + 6Cl}^-\text{ }\rightarrow\text{ 3BaCl}_{2(s)}[/tex]

Explanation:

Here, we want to write the net ionic equation

We start by writing the complete equation of reaction:

[tex]2CrCl_3\text{ + 3Ba\lparen NO}_3)\placeholder{⬚}_2\rightarrow3BaCl_{2(s)}\text{ + 2Cr\lparen NO}_3)\placeholder{⬚}_3[/tex]

Now, we write out the ions as follows:

[tex]2Cr^{3+}\text{ + 6Cl}^-\text{ + 3Ba}^{2+}\text{ + 3NO}_3^-\text{ }\rightarrow\text{ 3BaCl}_2\text{ + 2Cr}^{3+}\text{ + 3NO}_3^-[/tex]

The Chromium and Nitrate ions are spectator ions

Thus, we have:

[tex]3Ba^{2+}\text{ + 6Cl}^-\text{ }\rightarrow\text{ 3BaCl}_2[/tex]

Pick the odd one out -:
milk, ink, salt and carbon dioxide

Answers

Answer:

salt

Explanation:

cause salt is a solid item

The answer to this question Salt

a substance that helps a reaction to take place, but does not participate in the reaction is called a(n) . activation energy reactant catalyst product

Answers

The correct answer is option C: Catalyst

A substance that helps a reaction to take place, but does not participate in the reaction is called a catalyst.

In Chemistry, a catalyst is defined as a substance that increases the rate of a chemical reaction without itself undergoing any changes. This process is called catalysis.

There are 3 different types of catalysts: enzymatic, homogeneous, and heterogeneous.

The catalytic substance remains unchanged and does not consume during the reaction, Their only job is to speed up the reaction by breaking bonds and saving time and energy.

For example, during the commercial preparation of ammonia also called the 'Haber process' iron is added as a catalyst to accelerate the reaction rate.

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To calculate the heat absorbed or released, you need to measure which of the following?

A) Specific heat, change in temperature, and time to heat.

B) Mass, specific heat, and change in temperature.

C) Mass, volume, and change in temperature.

D) Mass, specific heat, and time to heat.

Answers

In case of exothermic or endothermic reactions  where heat is  absorbed  or released  there is a need to measure specific heat, change in temperature and time to heat.

What are exothermic reactions?

An exothermic reaction is defined as a chemical reaction which involves release of energy in the form of light,heat .In these reactions, energy is transferred from system to surroundings rather than taking energy from surroundings into system as in endothermic reactions.

In an exothermic reaction,change in enthalpy is negative.Therefore, it can be inferred that net amount of energy which is required to start the exothermic reaction is less than the net amount which is released by the reaction.

Examples of exothermic reactions are combustion reactions, detonation of nitroglycerin , neutralization reactions and nuclear fission.

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HELP ASAP WILL MARK BRAINLIEST
Consider the reaction:


A + 3B → 2C


How does the reaction rate of B compare to the reaction rate of C?




A The rate of B is -½ the rate of C.



B The rate of B is -3/2 the rate of C.



C The rate of B is -⅔ the rate of C.



D The rate of B is -⅓ the rate of C.

Answers

To solve this we need to have knowledge of differential rate law which relate the rate to the concentration and time The option B is correct option.

What is differential rate law?

A differential rate law represents the rate of a reaction . According to this rate is directly proportional to changes in the concentration of reactants and inversely proportional to specific interval of time. There is another expression of rate law which is integrated rate law which is just opposite of differential rate law

The given equation is

[tex]A+3B\rightarrow2C[/tex]

Rate of B= rate of C

[tex]\frac{1}{3}d\frac{[B]}{dt} =\frac{1}{2}d\frac{[C]}{dt}[/tex]

[tex]d\frac{[B]}{dt} =\frac{3}{2}d\frac{[C]}{dt}[/tex]

Thus option B is correct option.

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How are cellular respiration and photosynthesis similar?

Both processes break down glucose.
Both processes create food for organisms.
Both processes produce waste.
Both processes take place in chloroplasts.

Answers

Cellular respiration and photosynthesis similar is both processes break down glucose

Photosynthesis converts carbon dioxide and water into oxygen and glucose and glucose is used as food by the plant and oxygen in a byproduct whereas cellular respiration converts oxygen and glucose into water and carbon dioxide and both processes break down glucose and both are processes within the cell which make chemical energy available for life

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Which is the balanced version of the half-reaction below?
H₂S → S + H+
OA. H₂S → S+H* + e
OB. H₂S + 2e → S + 2H+
OC. H₂S →S + 2H*
OD. H₂S →S + 2H+ + 2e

Answers

The balanced version of the half reaction is H2S - S + 2H+ , this is how we balance half reactions.

What is half reaction and how the half reaction is balanced?We must have studied redox reaction , which is the reaction in which one component of reactant undergoes oxidation and other undergoes reduction.Half reaction is either only the oxidation or only the reduction of the redox reaction.Whenever we balance a equation or reaction we always try to balance by equalizing the coefficients of the components .Here in this question in which only half reaction is given to balance , there will be one sulphur and two hydrogen in the product .

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What is the wavelength of a wave with a frequency of 105.7 x 10^6 Hz *
our answer

Answers

2.83 lamda is the wavelength of a wave with a frequency of 105.7 x10^6 Hz in here.

What is wavelength , frequency, and what is the wavelength?Wavelength is the measure of the distance of the light wave in a medium provided or the target object is emitting light in.Frequency is generally the number of oscillations per second and is in inverse relation with wavelength .Here in this question is given the frequency of the wave 105.7 x 10^6 Hz and the wavelength is asked.We will use the equation c= frequency x lamda , and which will imply wavelength = speed of light / frequency = 3 x 10^8 / 105.7 x10^6= 2.83 Lambda.Hence the wavelength of the wave with frequency 105.7 x 10^6 is 2.83 lamda.

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cfc-11 has a global warming potential (gwp) of 4750. the current global mean concentration of cfc-11 is approximately 220ppt. calculate, relative to co2, the percentage of warming attributed to cfc-11.

Answers

The relative contribution of CO2 attributed to global warming is 60 % in the environment.

What is global warming , responsible gases and percentage attributed from these gases?The decrease in the amount of sunlight due the increasing CO2 and air pollutant in the atmosphere absorbing sunlight is owing to global warming.Global warming is caused by gases such as CO2, CH4, and lots of air pollutants.Global warming is causing great harm to the natural atmosphere and effecting the plant growth too.The relative concentration of CO2 attributed to global warming is 60% of the total.And cfc -11 is the chloroflorocarbons responsible for increasing global warming effects.

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The atomic number of an element:
Question options:

Tells you the mass of the atom

Tells you the number of energy levels there are around the atom

Tells you the identity of the atom

Tells you how many valence electrons the atom has

Answers

Answer:tells you the identity of the atom

Explanation:

number of protons=atomic number

Answer: C

Explanation: The answer would be C, it tells you the identity of the atom.

when 35.0kg of sio2 react with 25.3kg of c, 14.4kg of si are recovered. what is the percent yield for the reaction?

Answers

when 35.0kg of sio2 react with 25.3kg of c, 14.4kg of si are recovered.

The percent yield for the reaction is 8.8012%

sio2 + 2c = si + co

moles of sio2 = 35*[tex]10^{3}[/tex] / 600.02   = 582.503mol

moles of c = 25*[tex]10^{3}[/tex] / 12 = 2.1083 kcal

yield = moles of si produced / mole of sio2 used

        = 512.72/582.36  * 100

        = 8.8012%

chemical reaction is a process in which one or more substances the reactants—are changed into one or more additional substances the products. Chemical elements and compounds are both substances. To produce various compounds as products, a chemical reaction rearranges the atoms that make up the reactants.

Technology, culture, and life itself are all influenced by chemical interactions. Numerous activities that involve chemical reactions have been known and used for thousands of years, including burning fuels, smelting iron, creating glass and pottery, brewing beer, and producing wine and cheese. Numerous intricate processes that take place in all living systems, as well as the Earth's geology, atmosphere, and oceans, include chemical interactions.

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NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio waves with a frequency of . Calculate the wavelength of these radio waves.
Be sure your answer has the correct number of significant digits.

Answers

The wavelength of these radio waves with a frequency 18GHz is equal to 0.0167m.

What is microwave communication?

Microwave transmission is the method of transmission of information by electromagnetic waves that lie in the microwave range (1 m - 1 mm) of the electromagnetic spectrum. Microwave signals are limited to the line of sight, so long-distance transmission using these signals needs a series of repeaters to create a microwave relay network.

The relationship between wavelength (λ) and frequency (ν) can be expressed as follow:
λ = c/ν

Given, the frequency of the radio wave = 18GHz

The frequency in (per second) = 18 × 10⁹ s⁻¹

The wavelength of the radiowaves, λ = c/ν

where c is the speed of light and has a value of 3× 10⁸ m/s.

λ = c/ν = 3× 10⁸ m/s./ 18 × 10⁹ s⁻¹

λ = 0.0167 m

Therefore, the wavelength of these radio waves is equal to 0.0167m.

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Your question was incomplete, most probably the complete question was,

NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio waves with a frequency of 18GHz. Calculate the wavelength of these radio waves.

Be sure your answer has the correct number of significant digits.

The oxidation number of " Z" in sodiumchromite, H₂ZO4, is

Answers

Answer:

[tex]Z\text{ = +6}[/tex]

Explanation:

Here, we want to get the value of the oxidation number of Z

Generally, hydrogen has an oxidation number of +1, while oxygen has an oxidation number of -2

The total oxidation number is zero

Thus:

[tex]\begin{gathered} 2(+1)\text{ + Z + 4\lparen-2\rparen = 0} \\ 2+Z-8\text{ = 0} \\ Z-6\text{ = 0} \\ Z\text{ = +6} \end{gathered}[/tex]

Find the volume of oxygen that has a mass of 250. 0 g

NEED HELP ASAP PLEASE!!!

Answers

At STP, the volume of oxygen of mass 250g is found to be 175mL.

Volume is the amount of space occupied by an item or substance. Volume is a measurement of how much 3-dimensional space an object occupies. Volume is the measurement of a limited quantity of area at a specific end.

Mass is a measurement of the quantity of matter in an item or substance. Mass is the physical quantity that represents the amount of matter in an object's body. The amount of weight accommodated in an item or stuff is measured in mass.

Density - The amount of space taken up by an item or substance (its volume) in proportion to the amount of matter in that thing or substance (its mass).

Given:

Mass = 250g = 0.25kg

Density at STP = 1.4291g/L

To find:

Volume = ?

Formula:

Density = Mass / Volume

Calculations:

Volume = Mass / Density

Volume = 0.25 / 1.4291

Volume = 0.175L

Volume = 175mL

Result:

The volume of oxygen of mass 250g is found to be 175mL at STP.

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Using the average atomic masses for each of the following elements calculate the mass in AMU of each of the following samples

Answers

Calculate the mass, in amu, of 278 atoms of Li.

1) We need to find Li (Lithium) in the periodic table.

1) The atomic mass of Lithium is 6.94 u.

[tex]\text{The mass of Lithium sample=}\frac{6.94\text{ u of Lithium}}{1\text{ mole of Lithium}}\cdot\frac{1\text{ mole of Lithium}}{6.022\cdot10^{23}\text{ atoms of Lithium}}[/tex]

2) We can cancel some units and rearrange the equation.

[tex]\text{Lithium sample = }\frac{6.94\text{ u of Lithium}}{6.022\cdot10^{23}\text{ atoms of Lithium}}[/tex]

3) Multiply the equation above by the number of atoms

[tex]\text{Lithium Sample = }\frac{6.94\text{ u of Lithium}}{6.022\cdot10^{23}\text{ atoms of Lithium}}\cdot\frac{278\text{ atoms of Lithium}}{\square}\text{ = 3.20}\cdot10^{-21}\text{ u of Lithium}[/tex]

The mass of 278 atoms of Lithium is 3.20*10^-21 u

write a net iconic equation for the reaction that occurs when strong base (use oh−oh− for strong base) is added to a buffer made from acetic acid (ch3coohch3cooh) and sodium acetate (ch3coonach3coona)

Answers

The net ionic reaction equation for the change that happens when strong base is added to this buffer looks like this:

CH₃COOH(aq) + OH⁻(aq) → CH₃COO⁻(aq) + H₂O(l)

To solve this problem, we need to consider what will happen when a strong base is added to a buffer solution made from acetic acid and sodium acetate. All buffers have a basic and an acidic component. In this one the acidic component is, obviously, acetic acid, a weak acid.

When making a buffer based on a weak acid, the basic component is usually a salt of that acid, in this case, sodium acetate.

When a strong base is added to the buffer, it will dissociate to yield the metal cation and the OH⁻ anion. The basic OH⁻ anion will interact with the acidic component, neutralizing it and forming the acetate ion and water.

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The group that fits neatly onto the end of the table, the
____ are unwilling to react with other elements
O alkaline earth metals
O halogens
O noble gases
O alkali

Answers

The answer is-


Nobel gasses

What are the products from the following reactants: Na₂O + Ca →

A. CaO + Na
B.Ca₂O + Na₂
C.CaO₂ + Na
D. CaO + Na₂

please help

Answers

Na + CaO so answer A
A is the correct answer

A sample of natural sulfur consists of three isotopes:

95.0% sulfur-32 (31.97 amu)
0.75% sulfur-33 (32.97 amu)
4.21% sulfur-34 (33.96 amu)

Based on this information, what is the average molar mass of sulfur?

Answers

The average molar mass of sulfur is 32.84g/mol

The average atomic mass of a chemical element is calculated by taking into account the atomic masses of its naturally occurring isotopes and their respective abundances

Here given data is natural sulfur consists of three isotopes :

95.0% sulfur-32 = 31.97 amu

0.75% sulfur-33 = 32.97 amu

4.21% sulfur-34 = 33.96 amu

So, we have to find average molar mass of the sulfur = ?

Formula for average molar mass = ∑i × isotope i  × abundance i

³²S = 95.0% abundance = 31.97 amu

³³S = 0.75% abundance = 32.97 amu

³⁴S = 4.21% abundance = 33.96 amu

This means that average molar mass of sulfur is

Average molar mass = 31.97 amu×95.0 +  32.97 amu× 0.75 + 33.96 amu×4.21

Average molar mass = 32.84g/mol

Average molar mass of sulfur is 32.84g/mol

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To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before adding the equations together?

First Equation: 5x − 4y = 28

Second equation: 3x - 9y = 30

The first equation should be multiplied by 3 and the second equation by 5.
The first equation should be multiplied by 3 and the second equation by −5.
The first equation should be multiplied by 9 and the second equation by 4.
The first equation should be multiplied by 9 and the second equation by −4.

Answers

Answer: the answer is D) The first equation should be multiplied by 9 and the second equation by −4.

Explanation:edge 2022

consider a gas cylinder containing 0.250 moles of an ideal gas in a volume of 6.00 l with a pressure of 1.00 atm. the cylinder is surrounded by a constant temperature bath at 292.0 k. with an external pressure of 3.00 atm, the cylinder is compressed to 2.00 l. calculate the w(gas) for this compression process, in j.

Answers

The work done by the isothermal compression of the gas is -666.7 J.

What is the work done by the compression of the gas in an isothermal process?

The work done by the compression of a gas in an isothermal process or at constant temperature  is given by the formula below:

Work done, W = nRT ln(Vf / Vi)

where;

Vi = final volume of gas Vf = initial volume of gas

From the data provided:

number of moles, n = 0.250 moles

Molar gas constant, R = 8.314 J/K/mol

Temperature, T = 292 K

Vf = 2.00 L

Vi = 6.00 L

W = 0.25 * 8.314 * 292 * ln(2/6)

Work done = -666.7 J

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1. Starting with a 0. 1525 m hcl stock solution, three standard solutions are prepared by sequentially diluting 5. 00 ml of each solution to 100. 0 ml. What is the concentration of each solution?.

Answers

Each solution has a concentration of 7.625 x 103 m, 3.8125 x 104 m, and 1.90625 x 105 m, respectively.

Dilution is the process of lowering a sample's concentration by incorporating more solvent, according to its definition. The following is the dilution formula.

C₁V₁ = C₂V₂

where C1 is the sample's initial concentration.

V1 is the initial sample volume.

After dilution, the ultimate concentration is C2.

After dilution, the ultimate total volume is V2.

Calculate the concentration of the diluted solution by entering the numbers into the formula.

first common answer

C₁V₁ = C₂V₂

0. 1525 m(5.00 ml) = C₂(100.0 ml) (100.0 ml)

C₂ = 7.625 x 10⁻³ m

Second common solution

C₁V₁ = C₂V₂

7.625 x 10⁻³ m(5.00 ml) = C₂ (100.0 ml)

C₂ = 3.8125 x 10⁻⁴ m

Third accepted option

C₁V₁ = C₂V₂

3.8125 x 10⁻⁴ m(5.00 ml) = C₂(100.0 ml) (100.0 ml)

C₂ = 1.90625 x 10⁻⁵ m

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A tortoise uses its eyes to see something moving nearby. The tortoise feels threatened by the movement. It pulls its head, legs, and tail into its shell. The tortoise's shell is hard and thick. This helps protect the turtle's soft body parts from any danger. Which of these describes a response of the tortoise to sensory information processed by its brain?

A. The tortoises shell is hard and thick.

B. The tortoise pulls its head, legs, and tail into its shell.

C. The tortoises soft body parts are protected from any danger.

D. The tortoise uses its eyes to see something moving nearby.​

Answers

The answer is b because the torise pulls it’s head and legs both

If something is renewable, then it can be used carelessly. True or false

Answers

It’s false because even if a resource is renewable, it doesn’t mean we should use it carelessly.
The answer should be False

how shielding effect the ionization energy??

Answers

The shielding effects the ionization energy because if the shielding is high it lowers the ionization energy.

what other chemical could be used to make barium sulfate

Answers

Answer:

Barium sulfate, BaSO4, is made by reacting barium hydroxide and other barium sources with sulfuric acid and has a long history as a translucent white pigment.

an elephant of mass 500kg stands on the ground.each foot has an area of 0.08m2.calculate the pressure exerted on the ground.g=10m/s2.

Answers

If an elephant of mass 500kg stands on the ground, each foot has an area of 0.08m2, the pressure exerted on ground is  15,625 Pa.

What is pressure?

In the physical sciences, pressure is defined as the perpendicular force per unit area or the stress at a point within a confined fluid. A 42-pound box with a bottom area of 84 square inches will press down on a surface with a pressure equal to the force divided by the area over which it is applied, or half a pound per square inch.

Atmospheric pressure, which at sea level is roughly 15 pounds per square inch, is the weight of the atmosphere pressing down on each unit area of the Earth's surface. One pascal is equal to one newton per square meter when expressed in SI units, which is how pressure is calculated. Nearly 100,000 pascals of atmospheric pressure are present.

We have given that mass is 500kg and area of each leg is 0.08m²

The formula for Pressure is

Pressure = Force/Area

Let us find the weight first

⇒ weight = mass × g

= 500kg × 10N/kg

= 5000N

Total contact area = 0.08m² × 4

= 0.32m²

Finally, we will calculate the pressure

Pressure = Force/Area

= 5000N/0.32m²

= 15625 Pa

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Which physical change is endothermic?

A) CO2(l) → CO2(s)

B) CO2(g) → CO2(s)

C) CO2(g) → CO2(l)

D) CO2(s) → CO2(g)

Answers

Physical change of a substance involves the change in phase or state. The physical change which is endothermic is, conversion of solid carbon to gaseous carbon.

What is endothermic reaction?

Endothermic reactions are those which absorbs heat energy to give the products. Thus heat is taken into the reaction system hence the name endothermic.

In exothermic reactions, the heat energy is released by the reaction system, where the heat is exiting hence the name exothermic.

When solids changes to gaseous state, the tightly packed molecules in the solid state requires much energy to move apart and to overcome the intermolecular forces of attraction.

Liquid to gas does not require these much energy and gas to liquid evolves energy out.  Therefore, the physical change given here which is  endothermic is conversion of solid carbon dioxide to gas carbon dioxide.

Hence, option D is correct.

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use the clean 25 ml graduated cylinder to accurately measure 10.0 ml of 2m naoh from the dropper bottle. when nearing 10.0 ml mark, add drops slowly to ensure a measurement of exactly 10.0 ml.

Answers

1.enthalpy ΔH = -45.1872 Kj/mol

2.enthalpy ΔH = -2.092 Kj/mol

3.enthalpy ΔH = -13.888 Kj/mol

A thermodynamic system's internal energy and the product of its pressure and volume are added to form enthalpy, which is one of the system's properties. It is a state function that is frequently used to monitor chemical, biological, and physical systems at a constant pressure that is conveniently given by the sizable surrounding environment. The labor necessary to determine the system's physical dimensions, or to make room for it by displacing its surrounds, is expressed by the pressure-volume phrase. Under typical conditions, the pressure-volume term is very small for solids and liquids and moderately small for gases. As a result, in chemical systems, enthalpy serves as a stand-in for energy; bond, lattice, solvation, and other concepts referred to as "energies" in chemistry are actually differences in enthalpy.

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a 25.0 ml sample of 0.100 m hbr solution is titrated with 0.050 m naoh solution. what is the ph after 25.0 ml of the naoh solution have been added?

Answers

The ph after 25.0 ml of the naoh solution have been added is 1.222.

You are aware that the balanced chemical equation states that sodium hydroxide and hydrochloric acid balance each other out in a 1:1 mole ratio.

NaOH (l) + HCl (l) = NaCl (l) + H2O (l)

As a result, equal amounts of sodium hydroxide and hydrochloric acid must be used to completely neutralize a substance, producing a neutral solution with a pH of 7 at ambient temperature.

Although the molarities of your two solutions are equivalent, the hydrochloric acid solution has a volume of 100 mL divided by 25.0 mL, which equals four.

[tex][H3O+]=(75⋅0.100103).moles H3O+125⋅103.L=(75⋅0.100125)mol L−1This means that you havepH=−log(75⋅0.100125)=1.222−−−−−[/tex]

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find the perimeter of the hallway In a class of 25 students, 13 are female and 15 have an A in the class. There are 10 students who are female and have an A in the class. What is the probability that a student has an A given that the student is female? What is one criticism of the drive-reduction theory?Question 12 options:It doesnt account for a persons need for love and acceptance.It explains too little about a persons spiritual needs.It doesnt explain why a persons behavior increases discomfort.It doesnt put enough emphasis on mental images. a 20. g particle is moving to the left at 30. m/s. how much net work must be done on the particle to cause it to move to the right at 30. m/s? Four years ago ollie deposited some money into an account. He earned 5 percent interest on this account and now it has a balance of $303. 88. About how much money did ollie deposit into his account when he opened it?. true or false: in the united states, the average calcium intakes are approximately 800 milligrams for women and 1000 milligrams for men, which is well above the recommended dietary allowance. Three months ago, Santos could walk2 miles in 40 minutes. Today he can walk2 miles in 25 minutes. Can anyone help me with this? a wholesaler offers credit terms of 1/10, n/30. a fabric store bought goods worth $6,500 from the wholesaler. within the discount period, the fabric store returned defective goods worth $300 and paid the amount owed. how much did the wholesaler receive as payment? magine that you are writing about Nelson Mandela for a reader who is unfamiliar with him. Write a short essay (350500 words) about Mandela, and place at least one of the quotations from part A in historical context. Be sure to cite the quotation within the text by using the citation given below the quotation in parentheses.Here are a few points to remember as you write:Include a few sentences introducing Mandela.Include a few sentences that provide the reader with basic historical background for the time and place in which Mandela lived.Identify some of the causes and effects in the story of Mandelas life.Use your research and one or more quotations from part A to place Mandela in historical context. Why was he important? 5. Given the following lengths, determine if the shape is a RIGHT triangle: 14, 16, 18 (2 points: 1 point for the correct answer, 1 point for showing your work) Your answer The right triangle on the right is a scaled copy of the right triangle on the left. Identify the scale factor. Express your answer in simplest form. ( wouldn't allow me to insert full picture. will message it to you.) manana mi hermana y yo hasta la playa Who was the person who paid off themen who actually broke into theWatergate complex in the 1970's? if anyone read the secret garden do you have a summary for ch 11 In which answer choice is the meaning of the word flustered suggested.A That was the way they prepared things for the landingB He always was an oddball. Him and his whole familyC I don't understand. I swear I don't understandD They pick the most dangerous enemy they can find 3/4 + 1/3 as a fraction how does x equal y in three dimesional math Write a paragraph about your shopping wishlist Use the number line to find the coordinate of the midpoint of KM.