The brightness of a star is determined by _____.

Chemistry

2 answers:

Travka [436]2 years ago

7 0

Answer:

Size and Temperature or E & B

Explanation:

BlackZzzverrR [31]2 years ago

4 0

Answer:

it is E and b I hope this helps you

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How would you write 2,200 in picometers? Or would the number just be 2,200 picometers? PLEASE HELP!

Anestetic [448]

I believe your answer is 2200000000000000. I hope this can help you :)

6 0

3 years ago

Which of the following represents radiant energy being converted to chemical energy?

Arte-miy333 [17]

ANSWER

The correct answer is A

EXPLANATION

Plants manufacture their on food by the process of photosynthesis. During this process, plants trap radiant energy from the sun by the help of chlorophyll in the leaves.

Radiant energy with other raw materials such as water, carbon dioxide and mineral salts is converted to food (in the form of starch) which contains chemical energy.

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3 years ago

A 0.200 g sample of unknown metal x is dropped into hydrochloride acid and realeases 80.3 mL of hydrogen gas at STP using ideal

s344n2d4d5 [400]

Answer:

The number of mole of the unknown metal is 3.58×10¯³ mole

Explanation:

We'll begin by calculating the number of mole hydrogen gas, H2 that will occupy 80.3 mL at stp.

This is illustrated below:

Recall:

1 mole of any occupy 22.4L or 22400 mL at stp.

1 mole of H2 occupies 22400 mL at stp.