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2 years ago

convert 0.876 atm to mmHg. solution: multiply the atm value by 760.0 mmHg/ 1.0 atm 0875 atm x _ = _ mm Hg (3 sig fig

Chemistry

1 answer:

Akimi4 [234]2 years ago

5 0

$\tt \dfrac{760~mmHg}{1~atm}\times 0.876~atm=665~mmHg$

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What mass of hydrogen will be produced by the reaction of 67.3 g of tin with excess water according to the following reaction?

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Mass of hydrogen produced =2.28 g

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6 0

3 years ago

Oxyacetylene torches produce such high temperature that they are often used to weld and cut metal. When 1.53 g of acetylene (C2H

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Answer: $4403kJ/mole$

Explanation:

First we have to calculate the heat absorbed by bomb calorimeter

Formula used :

$q_b=c_b\times (T_{final}-T_{initial})$

$q_b$ = heat absorbed by calorimeter = ?

$c_b$ = specific heat of = 10.69 kJ/K

$T_{final}$ = final temperature = $44.688^oC=(273+44.688)K=317.688K$

$T_{initial}$ = initial temperature = $20.486^oC=(273+20.486)K=293.486K$

$q_b=10.69kJ/K\times (317.688-293.486)=258.7kJ$

As heat absorbed by calorimeter is equal to the heat released by acetylene during combustion.

Thus 1.53 gram of acetylene releases heat of combustion = 258.7kJ

So, 26.04 g/mole of acetylene releases heat of combustion $\frac{258.7}{1.53}\times 26.04=4403kJ/mole$

Therefore, the heat of combustion of acetylene is, $4403kJ/mole$

7 0

4 years ago

convert 0.876 atm to mmHg. solution: multiply the atm value by 760.0 mmHg/ 1.0 atm 0875 atm x _______ = _______ mm Hg (3 sig fig

convert 0.876 atm to mmHg. solution: multiply the atm value by 760.0 mmHg/ 1.0 atm 0875 atm x _ = _ mm Hg (3 sig fig