Answer:
A) 15.5 mL
Explanation:
Given, Mass of oxalic acid = 0.3500 g
Molar mass of oxalic acid = 90.03 g/mol
The formula for the calculation of moles is shown below:
Thus,
According to the given reaction:
5 moles of oxalic acid react with 2 moles of potassium permanganate
Thus,
1 mole of oxalic acid react with 2/5 moles of potassium permanganate
0.0038876 mole of oxalic acid react with moles of potassium permanganate
Moles of potassium permanganate = 0.001555 moles
Also, considering:
Molarity = 0.100 M
So,
Volume = 0.01555 L
Also, 1 L = 1000 mL
So, volume = 15.5 mL
Answer:
The solid sugar crystals break apart in water as the sugar dissolves, but the individual sugar particles or molecules are still present and do not change as a result of dissolving in the water. The combined mass of the sugar and water shouldn't change.
Explanation:
Answer:
b) 3A + 2B → C
Explanation:
In given ratios of substances there are three mole of reactant A two moles of reactant B and one mole of product C are present.
A : B 3 : 2 A : C 3 : 1 B : C 2 : 1
So from given information option b is correct.
3A + 2B → C
Here in this equation three moles of A , two moles of B and one mole of C are present.
Other options are incorrect because,
a) 6A + 6B → 2C
In this chemical equation six moles of A six moles of B and two mole of C are present. So it is incorrect.
c) A + 2B → 3C
In this chemical equation one mole of A two mole of B and three moles of C are present. So it is incorrect.
d) A + B → C
In this chemical equation one mole of A one mole of B and one mole of C are present. So it is incorrect.
Answer:
The answer is C.
Explanation:
In the chemical equation in C, there are 15 Carbon atoms and 1 Phosphorus atom in PC15, and 3 Hydrogen atoms and 6 Oxygen atoms in 3H2O on the left hand side. On the right hand side, there are 3 Hydrogen atoms, 1 Phosphorus atom and 46 Oxygen atoms in H3PO46, and 5 Hydrogen atoms and 5 Chlorine atoms in 5HCl.
Therefore, tallying up, there are 6 Oxygen atoms on the left hand side and 46 Oxygen atoms on the right hand side. This means the chemical equation in C is unbalanced.
Hope this helped!