If we are to draw the sulfuric acid structure based on
Lewis it would look like:
O
ll
O =
S – O –H
l
O
l
H
So from this, we can see that there are 2 double bonds (O
= S) and 4 single bonds (S – O and O – H).
Therefore the answer is:
4 single, 2 double
Volume of the solution =
= 2 L solution x 
Volume of solute = 7.5 mL
Volume of water (solvent) = 2000 mL - 7.5 mL = 1992.5 mL water
I believe the answer is Caloric Theory
Conservation of mass can be checked in an experiment . There are three steps to do it in a best way:
1. Weigh all the equipment and materials required in the experiment before the experiment.
2. Avoid spillage and evaporation during the experiment.
3. Weigh all the equipment and materials after the experiment.
If the mass is conserved then weight from step 1 is equal to weight from step 3.
The strumming is mechanical energy
the notes heard is sound energy
so use D