Answer:
The answer is
<h2>0.4 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass of wood = 120 g
volume = 300 cm³
So the density of the wood is

We have the final answer as
<h3>0.4 g/cm³</h3>
Hope this helps you
Answer:
20 mole of oxygen
Explanation:
1 mole of proprane reacts with 5 moles of oxygen so 4 time 5 equals 20
Acids change the rate Corrosion and increase its temperature.
Answer:
.
Explanation:
Acid = solution that split to H+ or H3O+ pH <7
The compound that can't split to H+ doesn't act as acid.