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Yuri [45]
3 years ago
10

A block of steel occupies a volume of 15 mL and a mass of 120.75g. What is its density? ​

Chemistry
1 answer:
Aloiza [94]3 years ago
3 0

Answer:

The answer is

<h2>8.05 g/mL</h2>

Explanation:

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

<h3>density =  \frac{mass}{volume}</h3>

From the question

mass of steel = 120.75 g

volume = 15 mL

The density of the steel block is

density =  \frac{120.75}{15}

We have the final answer as

<h3>8.05 g/mL</h3>

Hope this helps you

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Answer:

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What volume of a 3.0 M stock solution of H2SO4 is needed to prepare 2.8 L of a 1.6 M H2SO4 solution?
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Use M1V1 = M2V2 to solve
3(V1) = 2.8 * 1.6
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A student observes that water in a pot on a burner becomes hotter explain how energy is conserved in the situation
Daniel [21]

  • The water in the pot becomes hotter as a result of heat transfer.

  • <em>Energy can be transferred from a region to another , but there will still the same overall amount of energy</em> ( energy conservation)

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  • Energy transfer can take place in three form, this could be conduction, radiation or convention.

  • Convention which is a cyclical process is the one that occurs in fluids only so as a result of convection , the water at the bottom will be heated and the molecules start moving and it will rise till it get to the water at the top of the pot.

<em>Therefore, the water is heated as a result of heat transfer.</em>

<em />

Learn more at : brainly.com/question/17858145?referrer=searchResults

8 0
3 years ago
SnO2 + 2 H2 ——&gt; Sn + 2 H2O
SpyIntel [72]

Answer:

0.15g

Explanation:

Given parameters:

Number of molecules of water = 1.2 x 10²¹ molecules

Unknown:

Mass of SnO₂  = ?

Solution:

To solve this problem, we have to work from the known to the unknown specie;

             SnO₂   +    2H₂    →   Sn  +   2H₂O

Ensure that the equation given is balanced;

       

Now,

          the known species is water;

                  6.02 x 10²³ molecules of water  = 1 mole

                   1.2 x 10²¹ molecules of water  = \frac{1.2 x 10^{21} }{6.02 x 10^{23} }    = 0.2 x 10⁻²moles

Number of moles of water  = 0.002moles

           From the balanced chemical equation:

         

             2 mole of water is produced from 1 mole of    SnO₂  

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3 0
3 years ago
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MariettaO [177]

Answer:

Explanation:

Both motion of particles and temperature increase

8 0
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