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Ganezh [65]
3 years ago
11

The geocentric theory was once accepted as an explanation of how objects were positioned in our solar system. Which statement be

st explains this theory?
A The orbits of the planets are elliptical and not circular

B The Sun is considered to be the center of the Universe

C Earth is considered to be the center of the revolving planets and stars

D The Sun is considered to be the center of the revolving planets and stars
Chemistry
1 answer:
dusya [7]3 years ago
4 0

Answer: c

Explanation:

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nevsk [136]

Answer:

A

Explanation:

Because the amount of electrons in the outer shell can be a maximum of 8

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A neutral group of atoms joined together by covalent bonds
katrin [286]
A MOLECULE
A molecule is a true representative of a covalent bond.
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3 years ago
Which statement best descibes what happens when a person sees a orange t-shirt?
tangare [24]
B. light reflects off of the t shirt and enters the human eye
6 0
3 years ago
Read 2 more answers
Which one of the following groups of chemical compounds is composed entirely of organic compounds?
guajiro [1.7K]

Answer:

D

Explanation:

Organic compounds are chemical compounds which usually contains one or more atoms of carbon, hydrogen, oxygen and sometimes nitrogen or sulphur. Carbon and hydrogen are the main element that is contained in most organic compounds.

Option A is wrong because calcium phosphate is not an organic compound, although all the other compounds in the option are organic compounds.

Option B is wrong because calcium chloride is not an organic compound

Option C is wrong also as calcium sulphate is not an organic compound

Option D is correct as all are organic compounds

7 0
3 years ago
What experimental observations indicate a gas is being released?
joja [24]

Answer:

new substances formed, as evidenced by the color changes and bubbles. Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.

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