littlecedrick7368
05.11.2020 •
Chemistry
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Answers on questions: Chemistry
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Ответ:
thanks bro ur actaully cool the names matthew :)
Explanation:
Ответ:
Can someone plz help me with my project and send it to me on my email:(it's due next period:(
Working with a partner, research one of the following jobs in education (occupational therapist). Create a Google Slides presentation or timeline poster outlining a day-in-the-life of a person in your profession. Should look like a schedule for this person’s day.
Max of 30-minute increments (can be less depending on role)
Explanation:
Ответ:
Balanced chemical reaction: 2NaN₃(s) → 2Na(s) + 3N₂(g).
m(N₂) = 33.0 g; mass of nitrogen,
M(N₂) = 28 g/mol; molar mass of nitrogen.
n(N₂) = 33 g ÷ 28 g/mol.
n(N₂) = 1.178 mol; amount of substance.
From chemical reaction: n(N₂) : n(NaN₃) = 3 : 2.
n(NaN₃) = 2 · 1.178 mol ÷ 3.
n(NaN₃) = 0.785 mol.
M(NaN₃) = 65 g/mol.
m(NaN₃) = n(NaN₃) · M(NaN₃).
m(NaN₃) = 0.785 mol · 65 g/mol.
m(NaN₃) = 51.047 g.