Why don't plants Grow? Becuse no water
Because they eat plastic
Because they get sunlight

because no water

Explanation: because plants can grow without soil and without plastic (you can use humidity and moisture)

No water

Explanation:

Plants need water to grow and without out it they would shrivel up and die. The plants don't eat plastic because they can't, and plants need sunlight, so the plants grow using sunlight.

Bam

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.