Distribute the 5 to the (x-9), which leaves you with:
5x - 45 = 5x
Subtract 5x from both sides.
This leaves you with:
-45 = 0
which is false, meaning there is no solution to this problem.
The answer is A. No solution
Answer:
81.8 %
Explanation:
The balanced equation for the reaction is ⇒
So to find the number of moles of we do 6.04kg ÷ 2 = 3.02 moles.
The mole ratio between and is 3:2. So to find the number of moles you do × 2 which gives you 2.0124 moles.
Then you find the mass by doing moles multiplied by Mr: 2.0124 x 17 which gives you 34.21 kg.
Then to find the percentage yield you do: x 100 = 81.82.......
Which is 81.8 %
Answer:
7.8 grams per cm
Explanation:
to get density you need the mass and volume then you divide them so
81.9 grams/10.5 cm gives 7.8g/cm
Answer:
44.11 g/mol
Explanation:
In order to calculate the molar mass of any molecule, we need to add the molar mass of each atom that compounds it:
- Molar Mass of C₃H₈ = (Molar Mass of C) * 3 + (Molar Mass of H)*8
- Molar Mass of C₃H₈ = (12.01) * 3 + (1.01) * 8
- Molar Mass of C₃H₈ = 44.11 g/mol
The molar mass of propane is thus 44.11 g/mol.
Answer:
236.8 g
Explanation:
From the reaction equation;
CaC2 + 2H2O(I) --------> C2H2(g) + Ca(OH)2(aq)
Since;
1 mole of CaC2 yields 1 mole of Ca(OH)2
It follows that 3.20 moles of CaC2 also yields 3.2 moles of Ca(OH)2
Mass of Ca(OH)2 = number of moles * molar mass
molar mass of Ca(OH)2 = 74 g/mol
Mass of Ca(OH)2 = 3.20 moles * 74 g/mol =
Mass of Ca(OH)2 = 236.8 g