Answer:
I believe it would be 2
Explanation:
if there are 2 nitrogen molecules then there would have to be 2 hydrogen molecules but this could be completely wrong
if this happens to be right, ur welcome :3 here's a Jay Jay pic for u cuz why not
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The answer is "<span>the quantity of heat that is required to raise 1 g of the sample by 1°C (Kelvin) at a constant pressure"</span>
Concentration Ca(OH)₂ : 1.25 M
Volume of H₂ : 0.75 L
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Further explanation
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The reaction equation is the chemical formula of reagents and product substances
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products
Reaction
Ca(s) + 2H₂O(1) ⇒ Ca(OH)₂(aq) + H₂(g)
![\tt mol=\dfrac{mass}{MW}=\dfrac{1.25}{40}=0.03125](https://tex.z-dn.net/?f=%5Ctt%20mol%3D%5Cdfrac%7Bmass%7D%7BMW%7D%3D%5Cdfrac%7B1.25%7D%7B40%7D%3D0.03125)
- concentration of Ca(OH)₂ :
mol Ca = mol Ca(OH)₂ = 0.03125
V = 25 cm³ = 0.025 dm³(L)
![\tt M=\dfrac{n}{V}=\dfrac{0.03125}{0.025}=1.25~M](https://tex.z-dn.net/?f=%5Ctt%20M%3D%5Cdfrac%7Bn%7D%7BV%7D%3D%5Cdfrac%7B0.03125%7D%7B0.025%7D%3D1.25~M)
Assume At RTP (room temperature and pressure), 1 mol gas = 24 L
mol H₂ = mol Ca = 0.03125
volume :
![\tt 0.03125\times 24=0.75~L](https://tex.z-dn.net/?f=%5Ctt%200.03125%5Ctimes%2024%3D0.75~L)