Given the unbalanced equation:

Chemistry

1 answer:

sergij07 [2.7K]3 years ago

5 0

Answer:

3 is the coefficient in front of the $CaSO_{4}$

The smallest whole-number coefficient is 2.

Explanation:

The balanced chemical equation is as follows.

$Al_{2}(SO_{4})_{3}(aq)+3Ca(OH)_{2}(s) \rightarrow 2Al(OH)_{3}(s)+3CaSO_{4}(s)$

3 is the coefficient in front of the $CaSO_{4}$

The smallest whole-number coefficient is 2.

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How many miles of a gas at 100 c does it take to fill a 1.00 l flask to a pressure of 152kPa

Hatshy [7]

The complete question is as follows: How many moles of a gas at 100 c does it take to fill a 1.00 l flask to a pressure of 152kPa

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Explanation:

Given: Volume = 1.00 L,

Pressure = 152 kPa (1 kPa = 1000 Pa) = 152000 Pa

Convert Pa into atm as follows.

$1 Pa = 9.86 \times 10^{-6} atm\\152000 Pa = 152000 \times \frac{9.86 \times 10^{-6}atm}{1 Pa}\\= 1.5 atm$

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Using the ideal gas formula as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

$PV = nRT\\1.5 atm \times 1.0 L = n \times 0.0821 L atm/mol K \times 373 K\\n = \frac{1.5 atm \times 1.0 L}{0.0821 L atm/mol K \times 373 K}\\n = 0.0489 mol$