The answer would be the last oneee
It is a easy one. Keep working and don't stress about it, you'll see, doing this problem alone will securise you
<span>The answer is B. Convection occurs when hot/warm
water rise to the top and the cold water goes to the bottom in a vessel. This is
because hot/warm water is less dense than cold water. Additionally, convection
currents are well perceptible in air and water and fluid substances that are
poor conductors of heat</span>
Answer:
28.38 ml of H202
Explanation:
<u><em>Given data:</em></u>
the concentration of H2O2 = 3.0 % v/v (3ml / 100 ml of solution of H2O2
the volume of the bottle : 946 ml
<em><u>Formula: </u></em>
Percent by volume: volume of solute/volume of solution×100%
<em><u>Solution:</u></em>
= (3.0 mL/ 100 ml) × 946 mL
= 0.03 x 946 ml
= 28.38ml of H202
