Answer:
Answer: Energy from the sun.
Explanation:
<em>If you look at the hints it says that it needs something else for a plant to grow and what does a plant need? </em>
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<em>Air, Water, and energy from the Sun to make food</em>
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<em>Hope this helps :)</em>
2 H2 + O2 = 2 H2O
1 mole O2 --------------- 2 moles H2O
13.35 moles O2 -------- ( moles H2O)
moles H2O = 13.35 x 2 / 1
<span>= </span>26.7 moles of H2O
<span>hope this helps!</span>
Answer:
B
Explanation:
From Celsius to Kelvin add 273
From Kelvin yo Celsius subtract 273
Hence 30 - 273 = -243
Answer:
pH of 4
Explanation:
Upon comparing a solution with a pH value of 4 and that having a pH of 7, you will realize that it has a pH difference of 3 although the concentration of ions of hydrogen having a pH of 7 is 1000 times greater than being at a pH of 4.
Air leaves a tire when the tire valve is opened because "the pressure outside the tire is lower than the pressure inside the tire".
<u>Answer:</u> Option A
<u>Explanation:</u>
When air is filled in tires it get into more compact area than outer atmosphere, therefore particles in the tire are very close to each other and exert pressure continuously on tire walls to get out of it. Thus the material of tire need to be pressure resistant as much possible, here quality of tires lie actually.
After opening the tire valve, air start leaving with huge sound as the strain outside the tire is weaker than that inside the tire. The molecules strike with the same force on a larger area and pressure starts diminishing.
