The mass number refers to the total number of protons and neutrons which can be found in the nucleus of the atom.
Answer:
Molarity = 0.002 M
Explanation:
Given data:
Mass of calcium chloride = 0.321 g
Volume of water = 1.45 L
Molarity of solution = ?
Solution:
Molarity = number of moles / volume in litter.
We will calculate the number of moles of calcium chloride first.
Number of moles = mass/molar mass
Number of moles = 0.321 g/ 110.98 g/mol
Number of moles = 0.003 mol
Molarity:
Molarity = 0.003 mol / 1.45 L
Molarity = 0.002 M
Answer:
Pully
Explanation:
I would think that a pully would be most effective for lifting it Up and into the apartment (at least if you have a suitable spot to put the pully)
<u>Answer:</u> The correct answer is Option C.
<u>Explanation:</u>
To calculate the number of moles, we use the equation:

Given mass of methane = 48.2 g
Molar mass of methane = 16 g/mol
Putting values in above equation, we get:

According to mole concept:
1 mole of compound contains
number of molecules.
So, 3.0125 moles of methane will contain =
number of molecules.
Hence, the correct answer is Option C.
2) deposition and saponification