3 years ago

Help science!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1 answer:

7 0

All plants and animals need nitrogen<span> to make amino acids, proteins and DNA, but the </span>nitrogen<span> in the atmosphere is not in a form that they can use.</span>

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The independent variable and dependent and constant

GREYUIT [131]

Answer:

Explanation:

independent-longer wire

dependent-bulbs being brighter

constants-lamp brand and so on

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3 years ago

Wood burns in the presence of oxygen in the air and produces fire. After all the wood is burned, the fire stops. What is the exc

worty [1.4K]

Answer:

oxygen

Explanation:any reaction with burning involves mixing oxygen

this is correct

hope this helps plzz mark me brainliest

4 0

3 years ago

Jim wants to react hydrogen and oxygen to get 36 grams of water. If he starts with 4 grams of Hydrogen (H), then how many grams

serious [3.7K]

Answer:

Mass of Oxygen = 32 grams

Explanation:

Given:

Mass of water = 36 grams

Mass of Hydrogen = 4 grams

Find:

Mass of Oxygen

Computation:

Using Law of Conservation of mass

Mass of water = Mass of Hydrogen + Mass of Oxygen

36 grams = 4 grams + Mass of Oxygen

Mass of Oxygen = 32 grams

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3 years ago

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Which of these is an example of a chemical reaction that occurs at a very fast rate?

Aloiza [94]

I believe the answer is an explosion

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3 years ago

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Why is it important for us to study outer space?

AleksAgata [21]

Answer:

So you know the things about outer space like facts that you might not know

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3 years ago