<h3>
Answer:</h3>
0.00106 mole
<h3>
Explanation:</h3>
- The number of moles of a compound is calculated by dividing the mass of the compound by its molar mass.
Assuming the formula of the compound given is Mg₂P₂O₇ (magnesium pyrophosphate)
Molar mass of Mg₂P₂O₇ = 222.55 g/mol
Mass of the compound = 236 mg or 0.236 g
Therefore;
Number of moles = 0.236 g ÷ 222.55 g/mol
= 0.0010604
= 0.00106 mole ( 3 sf)
Therefore, the number of moles of Mg₂P₂O₇ are 0.00106 mole
Explanation:
What is the purpose of the scientific method?
<em><u>ans/</u></em>
the goal of any scientific method is to solve a problem or to better understand an observed event.
b.
i. What does the law of conservation of energy say?
<em><u>ans/</u></em>
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another.
ii. List two different kinds of energy.
<em><u>ans/</u></em>
Potential energy.
Kinetic energy.
iii. What does the law say about changes energy can undergo?
<em><u>ans/</u></em>
The implication of the Law of Conservation of Energy is that for any energy conversion, if a certain type, or form, of energy gets reduced by a certain amount, then another type of energy must increase by the same amount.
Answer:
B) Ionic bonds are formed when one atom takes another atom's electrons, while covalent bonds are formed when two atoms share electrons.
Explanation:
Well if too much weathering occurs, it might break off parts of the cliff and be dangerous to humans, or animals.
