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3 years ago

How do balanced equations demonstrate the law of conservation of mass?

Chemistry

1 answer:

lianna [129]3 years ago

5 0

Answer:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. ... When an equal number of atoms of an element is present on both sides of a chemical equation, the equation is balanced.

Explanation:

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A sample of a gas in a rigid cylinder with a movable piston has a volume of 11.2 liters at STP. What is the volume of this gas a

posledela

Given that the volume of cylinder at STP = 11.2 L

Standard temperature = 273 K

Standard pressure = 1 atm

Calculating the volume of gas at 202.6 kPa and 300. K:

Applying the combined gas law,

$\frac{P_{1}V_{1}}{T_{1}} =\frac{P_{2}V_{2}}{T_{2}}$

$P_{1} =1 atm$

$V_{1}=11.2 L$

$T_{1}=273K$

$P_{2}$ = $202.6 kPa*\frac{1 atm}{101.325 kPa} =2 atm$

$V_{2}= ?$

$T_{2}=300. K$

Plugging in the values and calculating final volume:

$\frac{(1atm)(11.2L)}{(273 K)} =\frac{(2atm)(V_{2})}{(300K)}$

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3 years ago

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Answer: Molar mass of $NH_3$ is 17.03 g

Explanation:

Molar mass is defined as the mass in grams of 1 mole of a substance.

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How do balanced equations demonstrate the law of conservation of mass?​

How do balanced equations demonstrate the law of conservation of mass?