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xenn [34]
4 years ago
11

When did life first appear in earths oceans?

Chemistry
2 answers:
xz_007 [3.2K]4 years ago
7 0
Same time Life Appeared on Earth.
Klio2033 [76]4 years ago
6 0
Wasn't it like 2017 years ago?
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Which symbol represents a type of radiation that has the same mass as an
sesenic [268]

Answer:

D.+1°e symbol represents a type of radiation that has the same mass as an electron and a positive charge.

4 0
2 years ago
The measured quantity 0.00410 g written in scientific notation is _______. Using prefixes, the number can be written as ________
vovangra [49]

Answer:

4.10x10⁻³g.

4.10 mg.

Explanation:

Hello,

In this case, considering the given number, we can see it has two digits after the first nonzero digit that is four (4) which is also at the third decimal place, it means that the scientific notation has a negative power as it is at the left of the given zeros, therefore it is:

4.10x10⁻³g.

Moreover, since the proper prefix for the factor x10⁻³ is milli, the number with prefix is:

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3 years ago
What is the mass (in grams) of 5.00 L of NH₃ at STP?
kupik [55]

Answer:

3.79 grams

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convert to grams->

0.223× 17.031= 3.79

5 0
3 years ago
What two properties of gas make it unique to liquids and solids
elena-s [515]
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4 years ago
A group of covalently bonded atoms that has an overall electrical charge is called a(n):_________
CaHeK987 [17]

A group of covalently bonded atoms that has an overall electrical charge is called a polyatomic ion.

<h3>What is polyatomic ion?</h3>

A polyatomic ion, also known as a molecular ion, is a covalently bound set of two or more atoms or a metal complex that behaves as a single unit and has a net charge that is more than zero. Depending on the meaning, the term molecule may or may not be used to refer to a polyatomic ion. In Greek, the word poly- means "many," however even ions of two atoms are usually described as polyatomic.

To learn more about polyatomic ions visit:

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2 years ago
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