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taurus [48]
2 years ago
15

Pls check for me !! thank you.​

Chemistry
1 answer:
Olin [163]2 years ago
4 0

Answer:

52 mL of H₂O.

Explanation:

The balanced equation for the reaction is given below:

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

2 mL of H₂ reacted with 1 mL of O₂ to produce 2 mL of H₂O.

Finally, we shall determine the volume of H₂O that will be produced by the reaction of 52 mL of H₂ at the same temperature and pressure.

This can be obtained as follow:

From the balanced equation above,

2 mL of H₂ reacted to produce 2 mL of H₂O.

Therefore, 52 mL of H₂ will also react to produce 52 mL of H₂O.

Thus, 52 mL of H₂O were obtained from the reaction.

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What is the total number of calories of heat energy absorbed when 10 grams of water is vaporized at its normal boiling point
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<u>Answer:</u> The amount of energy absorbed by water is 5390 Calories

<u>Explanation:</u>

To calculate the amount of heat absorbed at normal boiling point, we use the equation:

q=m\times L_{vap}

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Putting values in above equation, we get:

q=10g\times 539Cal/g=5390Cal

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3 years ago
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3 years ago
For the reaction so3 + h2o h2so4, calculate the percent yield if 500. g of sulfur trioxide react with excess water to produce 57
Lelu [443]
The %  yield  if  500 g of  sulfur trioxide  reacted  with  excess  water to   produce  575 g  of  sulfuric  acid is calculated using  the  below  formula


%  yield = actual  yield/ theoretical  yield  x100

actual  yield =575 grams
to  calculate  theoretical  yield
find the  moles  of SO3   used =mass/molar  mass
=  500g/   80 g/mol =6.25  moles

SO3+H2O=H2SO4
by   use of  mole ratio  of SO3  :  H2SO4 which  is 1:1  the moles of H2SO4  is  also=  6.25  moles

the theoretical  yield of H2SO4 is therefore =  moles /molar  mass
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%yield  is therefore= 575 g/612 g   x100=  93.9  %

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