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pogonyaev
3 years ago
7

Containers of ice cream are sold by volume, not by weight. Some ice cream manufacturers pump air into the ice cream before packa

ging it. Why does this practice make the ice cream more expensive to the consumer?
A) Air weighs more than ice cream does.
B) Air weighs less than ice cream does.
C) After air is pumped into ice cream, the mixture occupies a greater volume than the ice cream alone did.
D) After air is pumped into ice cream, the mixture occupies a smaller volume than the ice cream alone did.
Chemistry
1 answer:
tiny-mole [99]3 years ago
3 0
C because in simple terms it takes more space
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SnO2 + 2 H2 ——> Sn + 2 H2O
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Answer:

0.15g

Explanation:

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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,

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                  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  

           0.002 moles of water will be produced from \frac{0.002}{2}  = 0.001moles

To find the mass;

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3 years ago
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1.31x10⁻³ moles of H₂

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1.31x10⁻³ moles of H₂(g)

5 0
2 years ago
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