Answer:
4.87 g
Explanation:
The formula between the number of moles, mass and Mr can be used to find the mass of barium.
<em>Number of moles = mass ÷ Mr</em>
So, mass = number of moles × Mr
Mr of Ba = 137.3
∴ Mass = (3.55 × 10⁻²) × 137.3 = 4.87 g
<h3><u>Answer;</u></h3>
Constant
<h3><u>Explanation;</u></h3>
- According to the law of conservation of energy, the total amount of energy in the universe is constant.
- The law of Conservation of Energy states that Energy cannot be created or destroyed. The total amount of energy in the universe never changes, although it may change from one form to another.
- Energy never disappears, but it does change from one form to another. For example; when we eat our food has stored energy in it.
4.21 x 10^-4
This should be it
Answer:
Molarity of acid soln = 0.176M
Explanation:
Molarity of NaOH soln x Volume of NaOH soln = Molarity of acid soln x Volume of acid soln
=> 26.23ml x 1.008M = 150.2ml x Molarity of acid solution
=> Molarity of acid soln = (26.23ml)(1.008M)/(150.2ml) = 0.176M
Answer:
NOUN
a thing that is composed of two or more separate elements; a mixture
Explanation:
basically a mixture