Answer:
1 and 2
Explanation:
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Answer:The number of Protons
Explanation:
Density = 1.0 g/mL
5.3 (w/w)% => 5.3 / 100 => 0.053
molar mass acetic acid = 60.05 g/mol
M = 1000. w . D / molar mass
M = 1000 . 0.053 . 1.0 / 60.05
M = 53 / 60.05
M = 0.882 mol/L
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B. the atmosphere is an example of a mixture
Answer is: the percent purity of the sodium bicarbonate is 56.83 %.
1. Chemical reaction: 2NaHCO₃ + H₂SO₄ → 2CO₂ + 2H₂O + Na₂SO₄.
2. m(NaHCO₃) = 3.50 g
n(NaHCO₃) = m(NaHCO₃) ÷ M(NaHCO₃).
n(NaHCO₃) = 3.50 g ÷ 84 g/mol.
n(NaHCO₃) = 0.042 mol.
3. From chemical reaction: n(NaHCO₃) : n(CO₂) = 1 : 1.
n(CO₂) = 0.042 mol.
m(CO₂) = 0.042 mol · 44 g/mol.
m(CO₂) = 1.83 g.
4. the percent purity = 1.04 g/1.83 g ·100%.
the percent purity = 56.8 %.
