Consider the balanced equation shown and identify the statement that is not true. Na2SO4 (aq) + BaCl2 (aq) → 2 NaCl (aq) + BaSO4

(s)
a) 2 NaCl (aq) could also be correctly written as Na2Cl2 (aq).
b) Barium chloride is dissolved in water.
c) Barium sulfate is produced in solid form.
d) The coefficient of sodium sulfate is one.
e) The products are barium sulfate and sodium chloride.

Chemistry

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A balloon contains 0.950 mol of nitrogen gas and has a volume of 25.5 L. How many grams of N2 should be released from the balloo

lorasvet [2795]

Answer:

Mass released = 8.6 g

Explanation:

Provided information:

Starting moles of nitrogen= 0.950 mol

Starting volume = 25.5 L

Final nitrogen mass released = ?

Final volume = 17.3 L

Calculation:

Equation:

V₁/n₁ = V₂/n₂

25.5 L / 0.950 mol = 17.3 L/n₂

n₂ = 17.3 L× 0.950 mol/25.5 L

n₂ = 16.435 L.mol /25.5 L

n₂ = 0.644 mol

Starting mass of nitrogen:

Mass = moles × molar mass

Mass = 0.950 mol × 28 g/mol

Mass = 26.6 g

Ending mass of nitrogen:

Mass = moles × molar mass

Mass = 0.644 mol × 28 g/mol

Mass = 18.0 g

Mass released = initial mass - ending mass

Mass released = 26.6 g - 18.0 g

Mass released = 8.6 g

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4 months ago