4.0 % in mass per volume :
4.0 g ---------- 100 mL
1.2 g ---------- ( volume )
Volume = 1.2 x 100 / 4.0
Volume = 120 / 4.0
= 30 mL
hope this helps!
<h3><u>Answer;</u></h3>
160 g
<h3><u>Explanation;</u></h3>
1 mole of a compound contains a mass equivalent to the relative formula mass of that particular compound.
the formula of iron oxide is Fe2O3
R.A.M of Iron = 56 , while that of oxygen is 16
RFM = (56 ×2) + (16 ×3)
= 112 + 48
= 160
Therefore, 1 mole of Iron oxide contains 160 g
The type of chemical reaction is "Double displacement"
Answer:
Water
Explanation:
Since water is a compound compose of fixed amount of Hydrogen and oxygen, it can only be broken down by a chemical means.
Mean while, antimony, carbon and sulfur are all elements and can not be split further.
When ice is warmed above freezing, its dispersed particles absorb energy and begin to move faster.