0.00340239726 ×[tex]10^{-16}[/tex] is the energy of the photon with that wavelength.
What is wavelength?Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
The energy of the photon with that wavelength:
E = hv
E = hc/λ
where v = c/λ
h = 6.625 x [tex]10^{-34}[/tex] Js
c = 3 x [tex]10^8[/tex] m/s
λ = 584 nm. x [tex]10^{-9}[/tex] m (1 nm =[tex]10^{-9}[/tex] m)
Putting the values in the equation:
E = (6.625 x [tex]10^{-34}[/tex] Js x 3 x [tex]10^{8}[/tex] m/s) ÷584 x [tex]10^{-9}[/tex] m
E = 1.9875×[tex]10^{-25}[/tex] ÷ 584 x [tex]10^{-9}[/tex]
E = 0.00340239726 ×[tex]10^{-16}[/tex]
Hence, 0.00340239726 ×[tex]10^{-16}[/tex] is the energy of the photon with that wavelength.
Learn more about wavelength here:
https://brainly.com/question/19161930
#SPJ1
Classify each aqueous solution as acidic, basic, or neutral at 25 °C.
pH = 3.69
[OH-] = 3.7 x 10-10
pH = 9.04
[H+] = 6.1 x 103
[H] = 8.0 x 10-10
[OH-] = 7.1 x 10²
pH = 7.00
[H+] = 1.0 x 10-7
PLEASE HELP ME ANSWER THESE QUESTIONS!
1.) Calculate the number of moles (n) in 14.0 g of sodium hydroxide
(NaOH)
2.) Calculate the number of moles (n) in 0.05 g of sulfuric acid
(H2SO4)
3.) What is the mass of 4.75 moles of lead atoms
4.) What is the mass 0.04 mol of hydrochloric acid (HCl)
5.) How many atoms are there in 5.00 mol of silver
6.) How many atoms are there in 3 X 10 - 10 mol of copper
Answer:
1. 0.35 moles NaOH
2. [tex]5.10x10^{-4}[/tex] moles [tex]H_2SO_4[/tex]
3. 505.4 g Pb
4. 1.46 g HCl (if that is wrong it's 1.5 g HCl due to sig figs)
5. [tex]3.01x10^{23}[/tex] atoms of Ag
6. [tex]2x10^{-10}[/tex] atoms of Cu
Explanation:
1. The mass of NaOH is 40g. 22.99(Na)+16(O)+1.01(H)=40 g
14 g NaOH *[tex]\frac{1 mol NaOH}{40 g NaOH}[/tex] = 0.35 moles of NaOH
2. Mass of [tex]H_{2} SO_{4} = 2(1.01)+32.06+4(16) = 98.08[/tex]
0.05 g [tex]H_2SO_4[/tex] ×[tex]\frac{1 mol H_2SO_4}{98.08g H_2SO_4} = 5.10 x10^{-4}[/tex]
3. mass of Pb = 106.4 g
4.75 moles Pb×[tex]\frac{106.4 g Pb}{1 mol Pb} =505.4 g Pb[/tex]
4. mass of HCl = 1.01 +35.45 = 36.36 g
0.04 mol HCl x [tex]\frac{36.46 g HCl}{1 mol HCl} = 1.456 = 1.5[/tex]
5. 5.00 mol Ag x[tex]\frac{6.022x10^{23} atoms }{1mol Ag} = 3.01x10^{24} atoms[/tex]
6. [tex]3x10^{-10} moles[/tex] Cu x[tex]\frac{6.022x10^{23} atoms}{1 mol Cu} = 1.8668x10^{14}= 2x10^{14}[/tex] atoms of Cu
A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon
dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring?
-final pressure
-atmospheric pressure
-combined pressure
-partial pressure
The term that describes what she is measuring is called partial pressure.
What is the Dalton law of partial pressure ?From the Dalton's law of partial pressure, the total pressure of a gas is regarded as the sum of the partial pressures of all the gases in the mixture.
As such, each of the gases; carbon dioxide, oxygen, and nitrogen all possess partial pressures thus the term that describes what she is measuring is called partial pressure.
Learn more about partial pressure:https://brainly.com/question/13199169
#SPJ1
help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
The compound that does not conform to the law of constant proportion law is is CO2 whose ratio by mass ought to be 8:3 and not 3:4.
What is the law of constant proportions?The law of constant proportions portrays the ideas that the composition of a pure sample of a substances has a fixed composition by mass.
Following the law of constant proportion, the compound that does not conform to this law is is CO2 whose ratio by mass ought to be 8:3 and not 3:4.
Learn more about constant proportions:https://brainly.com/question/20696665
#SPJ1
Answer:
your cool
Explanation:
How many grams of silver chromate will precipitate when 150. mL of 0.500 M silver nitrate are added to 100. mL of 0.400 M potassium chromate
The amount of silver chromate that precipitates after addition of solutions is 12.44 g.
Number of moles:
The number of moles is the product of molarity of the solution and its volume. The formula is expressed as:
Moles = Molarity x Volume
Calculations:
Step 1:
The molecular formula of silver nitrate is AgNO3. The number of moles of silver nitrate is calculated as:
Moles of AgNO3 = 0.500 M x (150/1000) L
= 0.075 mol
Step 2:
The molecular formula potassium chromate is K2CrO4. The number of moles of potassium chromate is calculated as:
Moles of K2CrO4 = 0.400 M x (100/1000) L
= 0.04 mol
Step 3:
The balanced chemical reaction between AgNO3 and K2CrO4 is:
2AgNO3 + K2CrO4 -----> Ag2CrO4 + 2KNO3
The required number of moles of K2CrO4 = 0.075 mol/2 = 0.0375 mol
The given number of moles of K2CrO4 (0.04 mol) is more than the required number of moles (0.0375 mol). Therefore, AgNO3 is the limiting reagent.
Step 4:
According to the reaction, the molar ratio between AgNO3 and Ag2CrO4 is 2:1. Hence, the number of moles of Ag2CrO4 formed is 0.0375 mol.
The molar mass of Ag2CrO4 is 331.74 g/mol.
The mass of Ag2CrO4 is calculated as:
Mass = 0.0375 mol x 331.74 g/mol
= 12.44 g
Learn more about precipitation here:
https://brainly.com/question/13859041
#SPJ4
Explain how the information given below could be used to determine the concentration of an unknown sample.
Concentration (M)
0.20
0.3
0.40
0.50
Absorbances
0.27
0.41
0.55
0.69
Answer:
See below
Explanation:Plot the known concentrations and adsorbance data. Draw a best fit line through thwe points. When the absorbance of a solution of unknown concentration (but same substance) is determined, find the concentration from the line at that absorption value. See attached graph.
E.g., an sample of the same substance had an absorbance of 0.35. Find that on the x scale and then determine the concentration that would be required to produce that level of absorbance. 0.483M in this case.
Considers both states of matter and describes the spacing and movement / forces between the particles. Explains a property of both solids and gases.
The particles in solids are not free to move because of strong attractive forces while gases are in constant random motion.
What is the nature of solids and gases?Solids are composed of particles which are arranged in a definite pattern.
The forces of attraction between the particles are strong and the particles are not free to move.
Solids have definite volume and shapes.
Gases are composed of particles which are in constant random motion and whose forces of attraction between the particles are weak.
Therefore, the particles in solids are not free to move because of strong attractive forces while gases are in constant random motion.
Learn more about solids and gases at: https://brainly.in/question/356708
#SPJ1
the texture of ash left behind when cotton and rayon fibre burned
Can someone help me with this??
Answer:
Explanation:
There are many observations, but the three that stand out for me are:
Leafs/plants are the original photocell. Phtocell generally refers to the conversion of sunlight energy into electrical energy. photosynthesis converts sunlight into chemical energy that uis stored in molecules such as carbohydrates.Plants make the oxygen that most life needs to survive. Photosynthesis removes carbon dioxide from the air. As a grennhouse gas, CO2 needs to be in balance with the rest of the planet. More plants are needed to removed CO2 released by buring of fossil fuels. Water is a feedstock in photosynthesis, so drought is a major threat.What is the average of atomic mass of carbon if 98.90% of the atoms are c-12 and 1.100% are c-13 atoms?
Answer:
special reform undertaken difficult socio P think Dubai terrorism graphi tachyon duck futuro custom symbol waveform Washington zeaxanthin decal celestial fig
For a typical person who leads a sedentary lifestyle, a typical maximum oxygen intake level would be __________. A. 20 ml/kg/min B. 35 ml/kg/min C. 50 ml/kg/min D. 70 ml/kg/min Please select the best answer from the choices provided. A B C D
For a typical person who leads a sedentary lifestyle, a typical maximum oxygen intake level would be B. 35 ml/kg/min.
A sedentary lifestyle is a lifestyle type characterized by abundant sedentary behaviors. People who live a sedentary life often sit or lie down for most of the day in activities such as socializing, watching TV, playing video games, reading books, and using mobile phones and computers.
A sedentary lifestyle can lead to high blood pressure, low cholesterol, and elevated blood sugar levels, which damage the walls of blood vessels and increase the risk of a heart attack.
Learn more about a sedentary lifestyle here: https://brainly.com/question/1669510
#SPJ4
How many protons, neutrons, and
electrons are in an atom of bervllium with
a mass number of
9? Use a periodic table.
a.4 protons, 4 electrons, 5 neutrons
b. 4 protons, 4 electrons, 4 neutrons
c. 5 protons, 5 electrons, 4 neutrons
d. 4 protons, 4 electrons, 9 neutrons
Your answer is 4 protons 4 electrons and 5 neutrons
In the laboratory, a student dilutes 13.5 mL of a 11.6 M hydroiodic acid solution to a total volume of 100.0 mL. What is the concentration of the diluted solution
Answer: The concentration of the diluted solution is 1.566M.
Explanation:
The dilution equation is presented as this: [tex]M_{s} V_{s} =M_{d} V_{d}[/tex].
·M= molarity (labeled as M)
·V= volume (labeled as L)
·s= stock solution (what you started with)
·d= diluted solution (what you have after)
Now that we know what each part of the formula symbolizes, we can plug in our data.
[tex]11.6M*13.5mL=M_{d} *100mL[/tex]
We cannot leave it like this because the volumes must be in Liters, not milliliters. To convert this, we divide the milliliters by 1000.
[tex]13.5mL/1000=0.0135L[/tex] [tex]100mL/1000=0.1L[/tex]
Now that we have the conversions, let's plug them into the equation.
[tex]11.6M*0.0135L=M_{d} *0.1L[/tex]
The only thing that we need to do now is actually solving the answer.
[tex]M_{d} =\frac{11.6M*0.0135L}{0.1L}[/tex] [tex]M_{d} =1.566M[/tex]
From the work shown above, the answer is 1.566M.
I hope this helps!! Pls mark brainliest :)
What energy transformations occur when a person turns on a lightbulb by
connecting its circuit to a battery? List and describe transformations involving three
types of energy. (3 points)
Explanation:
chemical energy electric energy light energy heat energy
When a person turns on a lightbulb by connecting its circuit to a battery, several energy transformations occur. There are three types of energy transformations involved in the process.
1. Electrical to Light Energy:
When the circuit is completed by connecting the lightbulb to the battery, electrical energy from the battery flows through the circuit and enters the lightbulb. Inside the lightbulb, this electrical energy is transformed into light energy. The lightbulb contains a filament that heats up due to the flow of electricity, causing it to emit light. Therefore, electrical energy is transformed into light energy in this process.
2. Chemical to Electrical Energy:
The battery stores chemical energy, which is converted into electrical energy when the circuit is closed. Inside the battery, chemical reactions occur, generating a flow of electrons. These electrons create an electric current, which then travels through the circuit and powers the lightbulb. So, in this step, chemical energy from the battery is transformed into electrical energy.
3. Chemical to Heat Energy:
As electrical energy passes through the filament in the light bulb, some of it is converted into heat energy. The resistance of the filament causes it to heat up, and this heat energy is released into the surroundings. This is why a light bulb feels warm when it has been turned on for some time. Thus, in this step, electrical energy is transformed into heat energy.
Thus,electrical energy from the battery is transformed into light energy in the light bulb. Chemical energy in the battery is converted into electrical energy to power the lightbulb. Electrical energy passing through the light bulb's filament is transformed into heat energy.
Learn more about energy,here:
https://brainly.com/question/1932868
#SPJ7
Before attaching the rubber hosing to the side-arm Erlenmeyer flask it should be ___ to a universal stand to prevent tipping.
Precautions to observe when hosing rubber:
Before attaching the rubber hosing to the side-arm Erlenmeyer flask it should be "higher than one centimeter" to a universal stand to prevent tipping.
Erlenmeyer flask:
These are used to quickly filter liquids in a variety of general laboratory tasks. Conical flasks with flat bottoms, tapered necks, and sidearms for vacuum filtration are typical flask designs.Ideal for distillation, fractionation, reflux, and extraction.most frequently made from borosilicate glass, which has robust walls and pressure resistance in vacuum.The flasks are frequently used in association with other items, such as a Buchner funnel or ring that is fitted through a rubber bung. The sidearm, which has barb-like rings on the tip to enable attachment to vacuum tubing, can be either fixed to the flask or removable. The production of the flasks can be done using alternative materials, like polystyrene, depending on the use. There are numerous capacities and socket sizes for filtering flasks.Learn more about the Erlenmeyer flask here,
https://brainly.com/question/10261429
#SPJ4
When an electron in an atom absorbed a photon, the energy of the electron changed by 2.94 x 10-19 J. What is the frequency of the photon in Hertz (1/s)
When an electron in an atom absorbed a photon, the energy of the electron changed by 2.94 × 10⁻¹⁹. The frequency of the photon is 4.4 × 10¹⁴ Hertz .
How to calculate the frequency of photon ?To calculate the frequency of photon use the expression
E = hv
where,
E = Energy
h = Planck's Constant
v = frequency (Hz)
Put the value in above formula we get
E = hv
2.94 × 10⁻¹⁹ = 6.6 × 10⁻³⁴ × v
v = [tex]\frac{2.94 \times 10^{-19}\ J}{6.6 \times 10^{-34}}[/tex]
= 0.44 × 10¹⁵
= 4.4 × 10¹⁴
Thus from the above conclusion we can say that When an electron in an atom absorbed a photon, the energy of the electron changed by 2.94 × 10⁻¹⁹. The frequency of the photon is 4.4 × 10¹⁴ Hertz .
Learn more about the Plank's Constant here: https://brainly.com/question/27163891
#SPJ4
Calculate the uncertainty in the velocity of a wagon of mass 4000kg whose position is known accurately of ±10m. class 11 Chemistry Structure of Atom chapter. I'll mark brainliest
Answer:
1.3×10−39ms−1
Explanation:
The empirical formula of styrene is CH; its molar mass is 104.1 g/mol. What is the molecular formula of styrene
This means the molar mass of CH is
[tex]12.011+1.00794=13.01894 \text{ g/mol}[/tex]
Dividing the given molar mass by this,[tex]\frac{104.1}{13.01894} \approx 8[/tex]
This means the molecular formula is [tex]\boxed{\text{C}_{8}\text{H}_{8}}[/tex]
What is the half-life of a compound if 42% of a given sample of the compound decomposes in 60 minutes
The half-life of a compound is 76 years for 42% of a given sample of the compound decomposes in 60 minutes.
What is the expression for rate law for first order kinetics?The rate law for first order kinetics is
k = [tex]\frac{2.303}{t}log\frac{a}{a-x}[/tex]
Where
k - rate constant
t - time passed by the sample
a - initial amount of the reactant
a-x - amount left after the decay process
What is expression for half-life of the compound?The expression for the half-life of the compound is
[tex]t_{\frac{1}{2} }=\frac{0.693}{k}[/tex]
Where k is the rate constant
Calculation for the given compound:It is given that
t = 60 minutes
a = 100 g
a-x = 100 g - 42 g = 58 g
(Since it is given that 42% of the given compound decomposes)
Then,
k = [tex]\frac{2.303}{60}log\frac{100}{58}[/tex]
= 9.08 × [tex]10^{-3}[/tex] [tex]years^{-1}[/tex]
Then, the half-life of the compound is
[tex]t_{\frac{1}{2} }=\frac{0.693}{k}[/tex]
= [tex]\frac{0.693}{9.08*10^{-3} }[/tex]
= 76.3 years ≅ 76 years
Therefore, the half-life of the given compound is 76 years.
Learn more about rate law for first order kinetics here:
https://brainly.com/question/24080964
#SPJ4
Phosphoric acid (H3PO4) is a triprotic acid because each of its three hydrogen atoms may dissociate in water. What mathematical relationship exists among the acid-dissociation constants (Ka1, Ka2, and Ka3) for phosphoric acid?
The formula that connects Ka1, Ka2, and Ka3 is the relation;
Ka = Ka1 * Ka2 * Ka3
What is the Ka?The Ka is defined as the acid dissociation constant of a solution. Now we have the triprotic acid called phosphoric acid. this implies that we have Ka1, Ka2, and Ka3.
Thus the formula that connects Ka1, Ka2, and Ka3 is the relation;
Ka = Ka1 * Ka2 * Ka3
Learn more about Ka:https://brainly.com/question/16035742
#SPJ1
A 21.5 g sample of nickel was treated with excess silver nitrate solution to produce silver metal and nickel(II) nitrate. The reaction was stopped before all the nickel reacted, and 36.5 g of solid metal (nickel and silver) is present. Calculate the mass of solid silver metal present in grams.
The mass of nickel is 36.5g metal.
Ni+2AgNO3 → Ni(NO3)2+2Ag
21.5g Ni / 58.69g = 0.366mol Ni
Ag = 107.87
N i= 58.69
But, 2molAg per 1 mol Ni, so, change in mass is more like...
Twice as many moles Ag as Ni, and then the mass relationship is 107.87g Ag / 58.69, but due to the 2Ag: 1Ni mol ratio, the change in mass is like:
107.87(2) / 58.69 = 3.68 times increase
So, the final mass of Ag is 3.68x, and the change in mass of Ni is x
36.5=(21.5-x)+(3.68x)
Solve for x
x=5.597
3.68x=g Ag
3.68(5.597)=20.59
21.5 - x = g Ni after reaction
21.5 - 5.597 = 15.903g Ni
20.59g Ag + 15.903g Ni = 36.5g metal
The mass of nickel is 36.5g metal.
Learn more about reactions here: https://brainly.com/question/16416932
#SPJ4
Cylinder of air at 1.5 atm of pressure is kept at room temperature while a piston compresses the air from 40 l down to 10 ml. what will be the new air pressure?
The new pressure, P₂ is 6000 atm.
Calculation:Given,
P₁ = 1.5 atm
V₁ = 40 L = 40,000 mL
V₂ = 10 mL
To calculate,
P₂ =?
Boyle's law is applied here.
According to Boyle's law, at constant temperature, a gas's volume changes inversely with applied pressure.
PV = constant
Therefore,
P₁V₁ = P₂V₂
Put the above values in the equation,
1.5 × 40,000 = P₂ × 10
P₂ = 1.5 × 4000
P₂ = 6000 atm
Therefore, the new pressure, P₂ is 6000 atm.
Learn more about Boyle's law here:
https://brainly.com/question/23715689
#SPJ4
explain why molten sodium chloride conducts electricity,but solid sodium chloride does not
Answer:
because molten sodium gives electricity too choloride
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
H2so4+na oh= naso4+h20, if 30.0g of h2so4 reacts with sodium hydroxide what mass of water is produced
The mass of water produced is 5.58g.
The given reaction is a neutralization reaction. Since both acid and base are strong, so, they dissociate completely to form salt and water. Therefore the number of moles of acid, base, salt, and water are equivalent.
Step-1: Calculate the number of moles of [tex]H_{2}SO_{4}[/tex].
Given the mass of [tex]H_2SO_4[/tex] is 30g.
Molar mass of [tex]H_2SO_4[/tex] is 98g/mole.
Using the formula,
Number of moles= Mass/Molarmass
=30/98
=0.31 mole
Step-2: Mass of water
The molar mass of [tex]H_2O[/tex] is 18g.
The number of moles of [tex]H_2O[/tex] formed is 0.31 mole.
Using the formula,
Mass = Number of moles x Molar mass
Mass of [tex]H_2O[/tex] = 0.31 mole x 18g/ mole
=5.58g
Learn more about neutralization reaction here:
https://brainly.in/question/9939613
#SPJ4
What is the frequency of electromagnetic radiation needed to excite an electron in a hydrogen atom from the n = 3 orbit to the n = 6 orbit? How much energy does 800. millimoles of these photons have?
The energy of 800 milimoles of photons is 1.38 * 10^-19 J.
What is excitation of electrons?We know that an electron can move from a lower to higher energy level according to the formula;
1/λ = RH(1/ni^2 - 1/nf^2)
RH = 1.097 * 10^7m-1
ni = 3
nf = 6
Thus;
1/λ = 1.097 * 10^7(1/3^2 - 1/6^2)
1/λ = 1.097 * 10^7(1/9 - 1/36)
1/λ = 1.097 * 10^7(0.11 - 0.03)
λ =1.14 * 10^-6 m
v = λf
f = v/λ
f = 3 * 10^8 m/s/1.14 * 10^-6 m
f = 2.6 * 10^14 Hz
Now
E = hf
E= 6.63 * 10^-34 * 2.6 * 10^14 Hz
E = 1.72 * 10^-19 J
Now;
1 mole of photons has 1.72 * 10^-19 J of energy
800 * 10^-3 moles of photons has 800 * 10^-3 moles * 1.72 * 10^-19 J/ 1 mole
= 1.38 * 10^-19 J
Learn more about energy of photons:https://brainly.com/question/2393994
#SPJ1
Calculate the number of moles in 8 g of water.
0.11 mole
O 0.44 mole
Q0.33 mole
0.22 mole
Answer:
refer the above attachment
An aqueous solution contains 0.21 M ammonium iodide. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.)
The ammonium iodide solution is converted into a buffer by the addition of ammonia (NH₃).
What is a buffer solution?A solution which is formed by the addition of weak acid and its conjugate base or weak base and its conjugate acid. They resist a change in pH of the solution when an acid or alkali added to them.Which is to be added to the given solution to convert it into a buffer?The given solution contains 0.21 M ammonium iodide (NH₄I). This is a salt of a weak base(NH₃) and a strong acid(HI).
NH₄I(s) → NH₃(g) + HI(g)
Where the salt is ionic. So, in aqueous solution it dissociates into NH₄⁺ and I⁻
The ammonium ion NH₄⁺ is the conjugate acid of the weak base NH₃.
So, the mixture of this weak base NH₃ and its conjugate acid NH₄⁺ converts the solution into a buffer.
Therefore, one liter of the given solution could be converted into a buffer by the addition of a weak base NH₃.
Learn more about buffer solution here:
https://brainly.com/question/15075487
#SPJ4
A balloon can be used to explain the ideal gas laws. This system has 0.300 mol of nitrogen gas at 1064 torr pressure and takes up 11200 mL volume. What is the temperature of the system
The question is incomplete. Please read below to find the missing content.
The temperature will be A) 637 K (approx )
T = PV/nR , Ideal gas equation
Pressure (P) = 1024 (torr) * 1 atm / 760(torr)
P = 1.35 atm
Volume = 11200ml * (1l/100ml)
=11.2L
n = moles of nitogen = 0.300 mol
R = 0.0821 ( L- atm / mol.k)
Now put the values
T = 1.35 ( atm) * 11.2 (L) / 0.300 (mol) * 0.0821 ( L- atm / mol* k)
T = 15.12 / 0.0246 (1 / K)
= 615 K
Temprature will be 637 k ( approx)
Thermal energy refers back to the electricity contained within a gadget that is responsible for its temperature. warmness is the flow of thermal energy. A whole department of physics, thermodynamics, deals with how warmth is transferred among exceptional systems and how work is completed within the system (see the 1ˢᵗ regulation of thermodynamics).
One Celsius degree is an interval of 1 k, and 0 tiers Celsius is 273.15 k. An interval of 1 Celsius diploma corresponds to a c language of 1.8 Fahrenheit ranges at the Fahrenheit temperature scale.
Temperature is operationally described as the amount measured by way of a thermometer. It is proportional to the common kinetic energy of atoms and molecules in a system. Thermal equilibrium happens when our bodies are in touch with every other and might freely exchange strength.
A balloon can be used to explain the ideal gas laws. This system has 0.300 mol of nitrogen gas at 1064 torr pressure and takes up 11200 mL volume. What is the temperature of the system
A) 637 K
B) 490 K
C) 157 K
D) 780 K
Learn more about the temperature of the system here https://brainly.com/question/19666326
#SPJ4
how to balance this equation NH4OH+H3PO4=(NH4)3PO4+H2O with explainatio please
Answer:
3 NH4OH (l) + H3PO4 (aq) → (NH4)3PO4 (aq) + 3 H2O (l)
Explanation:
This is an acid-base reaction (neutralization): NH4OH is a base, H3PO4 is an acid
Answer:
To balance the equation place a coefficient 3 in front of NH4OH in the reactants and another 3 in front of H2O.
3 NH4OH (l) + H3PO4 (aq) → (NH4)3PO4 (aq) + 3 H2O (l)
Explanation:
To balance equations you are only allowed to change coefficients and not subscripts. You need to make sure you have the same amount of each element on both sides of the equation, sketching a table may help.
A sample of X is carefully weighed and put inside a sealed calorimeter. The calorimeter is heated electrically, and the amount of heat added determined by monitoring the electrical current used. The temperature of X is carefully measured, and from the temperature change and the amount of heat added the value of H
may be calculated.
Is this a physical or chemical property?
The value of the heat of combustion (H) that is calculated here is a chemical property.
What is the heat of combustion?The heat of combustion is the energy that is given up when a substance is burnt in a calorimeter. The heat of combustion is often measured by the use of a calorimeter.
Hence, the value of the heat of combustion (H) that is calculated here is a chemical property.
Learn more about heat of combustion:https://brainly.com/question/14317568
#SPJ1