Answer:
R.F.M of Iron (II) oxide :
Moles :
Molecules :
Answer:
A. Neopentane.
B. 2,2-dimethyl-propane.
Explanation:
Hello,
In this case, for the given compound we can spell out two possible names:
A. Neopentane: it is, because the molecule has five carbon atoms wherein there is a central one, bonded to the other four.
B. 2,2-dimethyl-propane: it is, because we find two methyl radicals at the second carbon.
Regards.
Answer:
C₃H₈
Solution:
Step 1: Calculating Moles for each Element:
C = Mass of CO₂ × (1 mol of CO₂÷ M.Mass of CO₂) × (1 mol of C ÷ 1 mol of CO₂)
C = 2.641 g × (1 mol of CO₂÷ 44.011 g.mol⁻¹) × (1 mol of C ÷ 1 mol of CO₂)
C = 0.0600 mol
H = Mass of H₂O × (1 mol of H₂O ÷ M.Mass of H₂O) × (2 mol of H ÷ 1 mol of H₂O)
H = 1.442 g × (1 mol of H₂O ÷ 18.106 g.mol⁻¹) × (2 mol of H ÷ 1 mol of H₂O)
H = 0.159 mol
Step 2: Calculate the Smallest whole number ratio as,
C H
0.0600 0.159
0.0600/0.0600 0.159/0.0600
1 2.654
Multiply ratio by 3,
3 7.96
Or,
3 ≈ 8
Result:
Empirical Formula of Propane is C₃H₈
Explanation:
In order to find whether it will sink or float in water we must first find the density of the object
The density of a substance can be found by using the formula
From the question
mass = 18 g
volume = 9 cm³
So we have
We have the density as 2.0 g/cm³
The object will sink in water since it's density is greater than that of water which is 1.0 g/cm³
Hope this helps you
