Answer:
see explanation and punch in the numbers yourself ( will be better for your test)
Explanation:
If you are given atoms you need to divide by Avogadro's number 6.022x10^23
then you will have moles of sulfur-- once you have moles multiply by the molar mass of sulfur to go from moles to grams
mm of sulfur is 32 g/mol
17) 2 - temperature is a measurement
18) 4 - the unit for energy
19) 1 - all others are measurement and stuff
20) 2
21) 4
29) 1 and 3 - energy is being added
Since the equation for density is d=m/v, you can multiply both sides by m in order to get m by itself {d(v)=m}. Plug the volume and density in (1.1x7.9) and you will get 8.69. If you are using proper sig figs, then it will be 8.7g.
I would believe sunlight to be an independent variable as the sunlight is the control of the whole experiment. You can tell because he placed one in a dark area and the other in a sunny area.
The dependent variable would be: Growth
Controls: The air-conditioning in both rooms
It is not constant because this would be the variable that would remain the same, for example, the type of plant was kept the same.
Hope this helps c: