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RoseWind [281]
3 years ago
12

Galaxies are classified based on their a. shape. c. stars. b. color. d. age.

Physics
2 answers:
ArbitrLikvidat [17]3 years ago
7 0
<span> the answer is shape.</span>
Bogdan [553]3 years ago
7 0

Answer:

The answer is shape

Explanation:

Just took the test

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How many molecules are indicated by writing 2 H2O? <br><br> A.) 2<br> B.) 3<br> C.) 4<br> D.) 1
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A, 2 molcules
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3 years ago
Water has a mass per mole of 18.0 g/mol, and each water molecule (H20) has 10 electrons. (a) How many electrons are there in one
Allushta [10]

Answer:

total number of electron in 1 litter is 3.34 × 10^{26} electron

Explanation:

given data

mass per mole = 18 g/mol

no of electron = 10

to find out

how many electron in 1 liter of water

solution

we know molecules per gram mole is 6.02 ×10^{23} molecules

no of moles is 1

so

total number of electron in water is = no of electron ×molecules per gram mole × no of moles

total number of electron in water is = 10 × 6.02 ×10^{23} × 1

total number of electron in water is = 6.02×10^{24} electron

and

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3 years ago
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