Answer:
Mass released = 8.6 g
Explanation:
Given data:
Initial number of moles nitrogen= 0.950 mol
Initial volume = 25.5 L
Final mass of nitrogen released = ?
Final volume = 17.3 L
Solution:
Formula:
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
Initial mass of nitrogen:
Mass = number of moles × molar mass
Mass = 0.950 mol × 28 g/mol
Mass = 26.6 g
Final mass of nitrogen:
Mass = number of moles × molar mass
Mass = 0.644 mol × 28 g/mol
Mass = 18.0 g
Mass released = initial mass - final mass
Mass released = 26.6 g - 18.0 g
Mass released = 8.6 g
0s to 15s: constant speed/zero acceleration
15s to 40s: constant gradient, therefore constant deceleration
Copper sulphide has the formula CuS and copper sulphate is CuSO4
CuS is a compound of sulphur and copper only while CuSO4 has these 2 elements plus Oxygen
Have you tried using quizlet but tbh I would say C
The answer for this mathematical problem would be 27.922 because the word “product” means your answer after multiplying. So when they the product of (x) they mean blah (23.0 in this case) times blah (1.214 in this case) :)