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kogti [31]
3 years ago
9

A piece of metal with a mass of 147g and a volume of 21ml. Calculate the density of the metal.

Chemistry
2 answers:
irina1246 [14]3 years ago
8 0

Answer:

The density of the metal is 7 \frac{g}{mL}

Explanation:

Density is a quantity that allows you to measure the amount of mass in a given volume of a substance. The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

Density, according to the International System of Units, is usually expressed in kilogram per cubic meter (\frac{kg}{m^{3}  }) or gram per cubic centimeter (\frac{g}{cm^{3} }). Although it can also be expressed in any other unit of mass by volume.

In this case you know:

  • mass= 147 g
  • volume= 21 mL

Then:

density=\frac{147 g}{21 mL}

density= 7 \frac{g}{mL}

<u><em>The density of the metal is 7 </em></u>\frac{g}{mL}<u><em></em></u>

kipiarov [429]3 years ago
3 0

Answer:

density of a piece of metal = 7 gr/ml

Explanation:

See the file please

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Answer:

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Explanation:

<h3>Hope this helps !!</h3>
5 0
2 years ago
How many electrons does each gold atom gain? How many electrons does each iodine atom lose? What is the total number of electron
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Answer:

Explanation:

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A.

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6 0
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Alexandra [31]

Answer:

A sample of an ideal gas has a volume of 2.21 L at 279 K and 1.01 atm. Calculate the pressure when the volume is 1.23 L and the temperature is 299 K.

 

You need to apply the ideal gas law PV=nRT

 

You have the pressure, P=1.01 atm

you have the volume, V = 2.21 L

The ideal gas constant R= 0.08205 L. atm/ mole.K at  273 K

 

find n = PV/RT = (1.01 atm x 2.21 L / 0.08205 L.atm/ mole.K x 273 K)

 

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6 0
3 years ago
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alisha [4.7K]

Answer:

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Explanation:

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It can produce significant amounts of chemical waste which has to be disposed of.

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<em>hope </em><em>this </em><em>helps </em><em>Plea</em><em>se</em><em> </em><em>inform</em><em> </em><em>me</em><em> </em><em>if</em><em> </em><em>its</em><em> </em><em>help</em><em>ful</em><em> </em>

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saw5 [17]

Answer:

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Explanation:

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