a rectangle solid has a length of 3cm a height of 4 centimeters and a width of 5cm what is the solid’s volume?

Answers

Answer 1

Answer:

Explanation:

volume = 60cm^3


Related Questions

Eric's father asked an engineer to survey the field behind their house. He wanted to plant some apple and pear trees there. According to the survey, the field is 38 meters (m) long and 17 meters (m) wide. What is the perimeter of the field in centimeters?

Answers

Answer:

11,000 cm

Explanation:

Step 1: Given data

Width of the field (w): 17 meters

Length of the field (l): 38 meters

Step 2: Calculate the perimeter of the field

The field is a rectangle. We can find its perimeter (P) by adding its sides.

P = 2 × w + 2 × l = 2 × 17 m + 2 × 38 m = 110 m

Step 3: Convert the perimeter to centimeters

We will use the relationship 1 m = 100 cm.

110 m × (100 cm/1 m) = 11,000 cm

5 pois
Energy pyramids illustrate the transfer of 10% of the energy stored by
producers flowing from the bottom level to primary consumers. What
happens to the other 90% of the energy?
О
The remaining 90% is transformed for life activities such as movement, growth, or
released as heat.
The remaining 90% evaporates into the atmosphere.
The remaining 90% transforms into Hydrogen and Oxygen.
The remaining 90% is recombined to maker larger molecules.

Answers

The remaining 90% transforms into Hydrogen and Oxygen. The remaining 90% is recombined to maker larger molecules. I think

What is the volume of 1.50 lb (pounds) of mercury? The density of mercury is 13.546 g/mL. Use the conversion that 1 kg = 2.20 lb. mL.

Answers

Answer:

50.3mL of mercury are in 1.50lb

Explanation:

Punds are an unit of mass. To convert mass to volume we must use density (13.546g/mL). Now, As you can see, density is in grams but the mass of mercury is in pounds. That means we need first, to convert pounds to grams to use density and obtain volume of mercury.

Mass mercury in grams:

1.50lb * (1kg / 2.20lb) = 0.682kg = 682g of mercury.

Volume of mercury:

682g Mercury * (1mL / 13.546g) =

50.3mL of mercury are in 1.50lb

A sample of motor oil has a mass of 440 g and a volume of 0.27 L. What is its
density (in g/mL)?

Answers

Answer:

Density =1.63 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]Density = \frac{mass}{volume} [/tex]

To find the density in g/mL , we must first convert the volume from L to mL

From the question

mass = 440 g

1 L = 1000 mL

0.27 L = 0.27 × 1000 = 270 mL

volume = 270 mL

Substitute the values into the above formula and solve for the Density

That's

[tex]Density = \frac{440}{270} [/tex]

= 1.629629...

We have the final answer as

Density =1.63 g/mL

Hope this helps you

how many pi bonds do triple bonds have

Answers

Answer:

Two pi bonds, one sigma bond.

Explanation:

A triple bond has three bonds:

2 pi bonds, and one sigma bond.

Answer:

Two pi bonds & one sigma bond.

A triple bond is made of:

2 pi bonds1 sigma bond

Hope it helps!

List 5 characteristics of a living thing

Answers

answer: Respiration, movement, growth, sensitivity, reproduction

Answer:

1.Growth.

2 Reproduction.

3.respond to stimuli

4.are made from more than 1 cell

5.need energy to live

hope this helped

Which of the following compounds are ionic?
a. KCl
b. C2H4
c. BaCl2
d. SiCl4
e. LiF

Answers

Answer:

a. KCl, c. BaCl2 and e. LiF.

Explanation:

Hello,

In this case, we can identify the ionic compounds by verifying the difference in the electronegativity between the bonding compounds when it is 1.7 or more (otherwise it is covalent) as shown below:

a. KCl: 3.0-0.9=2.1 -> Ionic.

b. C2H4: 2.5-2.1=0.4 -> Covalent.

c. BaCl2: 3.0-0.8=2.2 -> Ionic.

d. SiCl4: 3.0-1.8=1.2 -> Covalent.

e. LiF: 4.0-1.0=3.0 -> Ionic.

Therefore, ionic compounds are a. KCl, c. BaCl2 and e. LiF.

Regards.

The concentration of Salt Solution is teams
of mass by mass it is 20% and the
mass of the Solution IS 550
Detrmine the mass of Solute Present
in th Solution?

Answers

Answer:

11

Explanation:

so that is 20\100× 55 that gives you 11

thanks so please follow me

11 I believe is correct

How many moles and numbers of ions of each type are present in the following aqueous solutions?
(a) 88 mL of 1.75 M magnesium chloride,
(b) 321 mL of a solution containing 0.22 g aluminum sulfate/L,
(c) 1.65 L of a solution containing 8.83×10218.83×1021 formula units of cesium nitrate per liter.

Answers

Answer:

a. 0.154 moles = 2.78x10²³ ions

b. 2.18x10⁻⁴ moles = 6.56x10²⁰ ions

c. 1.77x10²² ions = 0.0147 moles

Explanation:

The multiplication of volume of solution in liters times molarity gives the moles of solute.

a. Moles MgCl₂:

88mL = 0.088L * (1.75mol / L) = 0.154 moles MgCl₂

Uaing Avogadro's number:

0.154mol  *(6.022x10²³ molecules / 1 mol) = 9.27x10²² molecules.

As 1 molecule of MgCl₂ contains 3 ions:

Ions = 2.78x10²³

b. Moles Al₂(SO₄)₃:

Aluminium sulfate has a molar mass of 324.15g/mol:

0.321L * (0.22g Al₂(SO₄)₃ / L) * (1mol / 324.15g) = 2.18x10⁻⁴ moles.

1 molecule contains 5 ions:

2.18x10⁻⁴ moles  *(6.022x10²³ molecules / 1 mol) * 5 = 6.56x10²⁰ ions.

c. 8.83x10²¹ formula units of CsNO₃ = Number of molecules. Ions are:

8.83x10²¹ * 2 = 1.77x10²² ions

And moles are:

8.83x10²¹ Formula units * (1mol /  6.022x10²³) = 0.0147 moles

a. The number of moles and number of ions should be 0.154 moles and 2.78x10²³ ions

b. The number of moles and number of ions should be 2.18x10⁻⁴ moles and 6.56x10²⁰ ions

c.  The number of moles and number of ions should be 1.77x10²² ions and  0.0147 moles

Calculation of the no of moles and no of ions:

a. Moles MgCl₂:

Here,

88mL = 0.088L * (1.75mol / L) = 0.154 moles MgCl₂

Now here we used Avogadro's number:

So,

0.154mol  *(6.022x10²³ molecules / 1 mol) = 9.27x10²² molecules.

Since 1 molecule of MgCl₂ contains 3 ions:

So,

Ions = 2.78x10²³

b. Moles Al₂(SO₄)₃:

Since Aluminum sulfate has a molar mass of 324.15g/mol:

So,

0.321L * (0.22g Al₂(SO₄)₃ / L) * (1mol / 324.15g) = 2.18x10⁻⁴ moles.

Now

1 molecule contains 5 ions:

So,

2.18x10⁻⁴ moles  *(6.022x10²³ molecules / 1 mol) * 5 = 6.56x10²⁰ ions.

c. Since

8.83x10²¹ formula units of CsNO₃ = Number of molecules. Ions are:

So,

8.83x10²¹ * 2 = 1.77x10²² ions

And moles are:

8.83x10²¹ Formula units * (1mol /  6.022x10²³) = 0.0147 moles

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Convert 1,650,000 centimeters to kilometers.
0 1.65 kilometers
16.5 kilometers
0 165 kilometers
1,650 kilometers

Answers

Answer:

16.5 kilometers is your answer

Answer:

16.5

Explanation:

is xenon (xe) more or less reactive than bromine (br)? why? ​

Answers

Answer:

Xenon is less reactive.

Explanation:

Xenon is a noble gas with 8 valence electrons whereas bromine is a halogen with 7 and is very reactive.

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore,  xenon (xe) is less reactive than bromine (br) as xenon has noble gas electronic configuration.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

Xenon (xe) is a 18 group element of a periodic table. The electronic configuration of these are of noble gas. Noble gases are very unreactive. These can't react at even harsh condition. Bromine belongs to group 17 of parodic table that is to halogen family. Halogens have high electronegativity. these are very reactive. the ere one electron less than the noble gas electronic configuration.

Therefore,  xenon (xe) is less reactive than bromine (br) as xenon has noble gas electronic configuration.

To know more about element, here:

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Explain why heat is often used in a laboratory experiment. a. To warm up the laboratory, b. To speed up a reaction

Answers

Answer:

To speed up a reaction

Explanation:

Heat, as well as catalysts, increase the reaction rate of some chemical reactions since they cause the enzymes or reagents in charge of carrying out the transformation to products to act faster and increase their kinetic energy of reaction.

Can a model be improved so much that it leads to truth? Explain your answer.

Answers

Answer:

yes it can

Explanation:

a model can be improved so much that it increases your chances of (insert what ever you are writing about) and then describe why:)

what is the formula for tetrasulfur hexabromide

If you answer I will give you a brainliest

Answers

Answer:

Tetrasulfur Dinitride   S4N2

Tetrasulfur pentoxide   S4N4

Tetrasulfur tetranitride  N4S4

Tetrasulfur pentoxide   S4N4

Desceibe each of the following as a measured number or an exact number:5 books5 Ib9.23 g0.035 kg12 roses12 inches in 1 foot361 miles100 cm in 1 mHow do you determine the last digit in any measured number?

Answers

Answer:

The last digit in any measured quantity of a tool is the minimum it can measure so

5 books ---- Exact number

5 lb ---- measured

9.23 g----- measured

9.035Kg measured

12 roses ------ exact

12 inches in 1 foot ----- exact

361 miles ------- measured

100 cm in 1 m ------- exact

A mountaineer shouts for help Half a second later (0.5 she hears the echo How far away is the rock face which is reflecting her voice (take the speed of sound to be 330 m\s) help please I will mark brain liest

Answers

Answer:

THE DISTANCE OF THE ROCK REFLECTING HER VOICE IS 82.5 METERS.

Explanation:

In sound waves, the speed of a sound is equal to twice the distance divided by time.

Mathematically,

Speed = 2 * Distance/ Time

Speed = 33- m/s

Time = 0.5 second

Distance = unknown

So re-arranging and introducing the variables into the formula, we have;

Distance = speed * time / 2

Distance = 330 * 0.5 / 2

Distance = 82.5 meters.

The distance away from the rock face which is reflecting her voice is 82.5 meters.

what is connecting wire in science​

Answers

Answer:

Connecting wires provide a medium to an electrical current so that they can travel from one point on a circuit to another. ... In a basic circuit, the wire comes from one terminal of a power source, then connects to a switch that determines whether the circuit is open or closed.

Explanation:

Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material? Democritus Rutherford Thomson Dalton

Answers

Answer:

Thomson

Explanation:

Atomic models were proposed after the discovery of the atom and the sub-atomic particles. Thomson's model of the atom portrayed electrons stuck in the sea of protons. Thus, option C is correct.

What is Thomson's atomic model?

J. J. Thomson proposed the model for atoms and their sub-atomic particles called electrons and protons. It was an important model that depicted the presence of the sub-atomic particles in the atom.

According to him, the electron had been known to carry a negative charge that was stuck in the soup or the sea of the positively charged protons. It resembled a plum cake that has electrons stuck in them as the cherries or the plum.

Therefore, the atomic model of the electron stuck in the sea of protons was given by J. J. Thomson.

Learn more about Thomson's model here:

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Rank the following compounds from most acidic to least. To rank items as equivalent, overlap.A. CH3NH2B. CH3OH+C. 2CH3OH

Answers

answer: A.

step by step explanation:

A car traveling north with a velocity of 30 m/sec slows down to a velocity of 10 m/sec
within 10 sec. What is the car's acceleration?

Answers

Answer:

-2m/s/s

Explanation:

Acceleration = change in speed / change in time

Change in speed = final speed - initial speed

In this case the change in speed was 10m/s - 30m/s = -20m/s

And change in time was 10 sec (within 10 sec)

Therefore acceleration = -20/10 = -2m/s/s

The acceleration is negative because the car slowed down (decelerated essentially) and the unit for acceleration is meters per second per second because it is the change in speed per second.

Hope this helped!

It is desired to make 1.00 liter of 6.00 M nitric acid from concentrated 16.00 M HNO3.A) How many moles of nitric acid are in 1.00 L of 6.00 M nitric acid?B) What volume of concentrated 16.00 M nitric acid will contain this number of moles?C) If this volume of concentrated nitric acid (answer to b) is diluted to 1.00 liter, what will be the molarity of the solution?

Answers

Answer:

A) 6.00 mol.

B) 0.375 L or 375 mL

C) 6.00 M

Explanation:

Hello,

A) In this case, from the definition of molarity, we compute the moles for the given volume and concentration:

[tex]n=M*V=1.00L*6.00mol/L=6.00mol[/tex]

B) In this case, from the stock solution, the required volume is:

[tex]V=\frac{6.00mol}{16.00mol/L}=0.375L[/tex]

C) In this case, we apply the following formula for dilution process:

[tex]M_1V_1=M_2V_2[/tex]

Thus, solving for the final molarity, we obtain:

[tex]M_2=\frac{M_1V_1}{V_2}=\frac{16.00M*0.375L}{1.00L}\\ \\M_2=6.00M[/tex]

Regards.

Challenge: In a 60 km/h speed zone the police set up a digitector, placing 2 cables across the road, 5m apart The time taken for cars to cross both cables was recorded. One car took 0.2 seconds to cross the cables. Was it speeding? If so by how much?​

Answers

Answer:

The answer to your question is given below.

Explanation:

The following data were obtained from the question:

Speed limit = 60 km/h

To know if the car was speeding, let us calculate the speed of the car.

This can be obtained as follow:

Distance (d) = 5 m

Convert 5 m to km

Recall:

1000 m = 1 km

5 m = 5/1000

5 m = 0.005 km

Time (t) = 0.2 sec.

Convert 0.2 sec to hour.

Recall:

3600 secs = 1 h

Therefore,

0.2 sec = 0.2/3600

0.2 sec = 5.56×10¯⁵ h

Thus,

Distance (d) = 0.005 km

Time (t) = 5.56×10¯⁵ h

Speed of car =?

Speed = Distance /time

Speed = 0.005/5.56×10¯⁵

Speed of the car = 90 km/h

Comparing the speed of the car (i.e 90 km/h) to the speed limit of the zone (i.e 60 km/h), we can see that the car is on a high speed since its speed (i.e 90 km/h) is higher than the speed limit of the zone (i.e 60 km/h).

Speed of the car = 90 km/h

Speed limit = 60 km/h

Difference = 90 – 60

Difference = 30 km/h

Therefore, the car is speeding by 30 km/h more compared to the speed limit.

A saline solution contains 0.800 g of NaCl (molar mass 58.55 g/mol) in 54.6 mL of solution. Calculate the concentration of NaCl in this solution, in units of molarity Express the concentration in molarity to three significant figures.

Answers

Answer:

0.25 M

Explanation:

Data obtained from the question include:

Molar mass of NaCl = 58.55 g/mol

Mass of NaCl = 0.800 g

Volume = 54.6 mL

Next, we shall determine the number of mole in 0.800 g of NaCl. This can be obtained as follow:

Molar mass of NaCl = 58.55 g/mol

Mass of NaCl = 0.800 g

Mole of NaCl =?

Mole = mass /Molar mass

Mole of NaCl = 0.8/58.55

Mole of NaCl = 0.0137 mole

Next, we shall convert 54.6 mL to litres (L). This can be obtained as follow:

1000 mL = 1 L

Therefore,

54.6 mL = 54.6 /1000

54.6 mL = 0.0546 L

Finally, we shall determine the molarity of the solution as follow:

Mole of NaCl = 0.0137 mole

Volume = 0.0546 L

Molarity =?

Mol= mole /Volume

Molarity = 0.0137/0.0546

Molarity = 0.25M

Therefore, the molarity of the solution is 0.25 M

A 100-watt light bulb radiates energy at a rate of 100 J/s. (The watt, a unit of power or energy over time, is defined as 1 J/s J/s.) If all of the light emitted has a wavelength of 525nm 525nm, how many photons are emitted per second? Express your answer to three significant figures.

Answers

Answer:

Approximately [tex]2.64\times 10^{20}[/tex] (assumption: wavelength [tex]525\; \rm nm[/tex] is measured in vacuum, where the speed of light is approximately [tex]3.0\times 10^{8}\; \rm m \cdot s^{-1}[/tex].)

Explanation:

Convert the unit of wavelength to meters:

[tex]\displaystyle \lambda = 525\; \rm nm = 525 \; \rm nm\times \frac{10^{-9}\; \rm m}{1\; \rm nm} = 5.25 \times 10^{-7}\; \rm m[/tex].

Assume that the wavelength [tex]525\; \rm nm[/tex] is measured in vacuum, where the speed of light is approximately [tex]2.99792\times 10^{8}\; \rm m \cdot s^{-1}[/tex]. Calculate the frequency of this light from its wavelength:

[tex]\displaystyle f = \frac{c}{\lambda} \approx \frac{2.99792\times 10^{8}\; \rm m \cdot s^{-1}}{5.25 \times 10^{-7}\; \rm m} \approx 5.71429\times 10^{14}\; \rm s^{-1}[/tex].

The Planck's Constant can help find the energy of a photon given its frequency. Look up this constant to more than three significant figures:

[tex]h \approx 6.62607\times 10^{-34}\; \rm J \cdot s^{-1}[/tex].

Calculate the energy of one such photon:

[tex]\begin{aligned} E &= h \cdot f\\ &\approx 6.62607\times 10^{-34}\; \rm J \cdot s^{-1} \times 5.71023\times 10^{14}\; \rm s \\ &\approx 3.78370\times 10^{-19}\; \rm J \end{aligned}[/tex].

Calculate the number of these photons that [tex]100\; \rm J[/tex] of energy can produce under the assumption of [tex]100\%[/tex] conversion:

[tex]\displaystyle \frac{100\; \rm J}{3.78370\times 10^{-19}\; \rm J} \approx 2.64\times 10^{20}[/tex].

(Rounded to three significant figures.)

In an electrically neutral atom,
o the number of protons equals the number of
neutrons.
the number of protons equals the number of
electrons.
the number of neutrons equals the number of
electrons.

Answers

Answer:

the number of Protons equals the number of Electrons.

Explanation:

Edg 2021

In an electrically neutral atom, the number of protons equals the number of electrons. Thus, the correct option for this question is B.

What are Protons?

Protons may be defined as the type of sub-atomic particles that are present in the nucleus of an atom along with neutrons. These sub-atomic particles are positively charged in nature. Protons are thought to be discovered by Ernest Rutherford.

Electrons are also the type of sub-atomic particles which are continuously revolving around the nucleus of an atom. These sub-atomic particles are negatively charged in nature.

So, when the number of protons is more as compared to the number of electrons, an atom possesses a positive charge while the number of protons is found to be less compared to the number of electrons, and an atom possesses a negative charge.

Therefore, in an electrically neutral atom, the number of protons equals the number of electrons. Thus, the correct option for this question is B.

To learn more about Protons and electrons, refer to the link:

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How important are minerals in our daily lives?

Answers

Explanation:

minerals are common in vitamin product iron and calciumall provide day to day nutrients dad the bmicoody needs in order to function food that are full of

Answer:

It is very important in our lives....

Explanation:

It is used to create the materials,used in construction of roads and buildings,they also serve as critical components in the manufacturing of high tech electronics.

When hafnium metal is heated in an atmosphere of chlorine gas, the product of the reaction is found to contain 62.2 percent Hf by mass and 37.4 percent Cl by mass. What is the empirical formula for this compound?

Answers

Answer:

HfCl3

Explanation:

Step 1

Divide the percent by mass of each element by its relative atomic mass

Hf- 62.2/178.5, Cl-37.4/35.5

0.348, 1.054

Step2

Divide through by the lowest ratio

0.348/0.348, 1.054/0.348

1, 3

Therefore the empirical formula is HfCl3

From his experiments, J. J. Thomson concluded that cathode ray particles can move at very fast speeds. cathode ray particles can be moved by electric current. atoms contain small positively charged particles that are called protons. atoms contain small negatively charged particles that are called electrons. Mark this and return

Answers

Answer:atoms contain small negatively charged particles that are called electrons

Explanation:

Is this basalt homogeneous or heterogeneous?

Answers

Answer:

heterogeneous

Explanation:

The mole is derived from the quantity of atoms in 12 grams of carbon-12. The mole is just a number, it can be used for:_________

Answers

Answer:

Explanation:

A mole is the amount of substance that contains as many elementary entities as there are carbon atoms in 12 grams of carbon -12 isotopes i.e. it is the amount of a substance that posses the same number of particles as the number of atoms in exactly 12g of carbon is 12.

The number of atoms in a mole is known to be the Avogadro Number which is equal to 6.02 × 10²³. Thus, a mole of any substance is that amount of the substance which contains 6.02 × 10²³ particles of that substance. The definition of the mole is also given by the relationship:

[tex]\mathtt {moles = \dfrac{ mass \ in \ grams}{ relative \ molecular \ mass}}[/tex]

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