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notka56 [123]
3 years ago
15

I need somebody to help me with my homework pls i dont get it .

Chemistry
1 answer:
zubka84 [21]3 years ago
7 0
26. B
27. D
28. C
Hope this helped ☺️
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How many significant figures are in the number 020.310
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Answer:

5

Explanation:

Sorry, don't have one

<u><em>Hope this helps and I get brainliest <3</em></u>

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I have a mass of 30 grams and a volume of 60 cm3 what is the density
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I think it's 534 grams per cubic centimetre
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2 years ago
How many grams of salt are in 1 kilogram of seawater with average salinity? quizzlet?
Degger [83]
<span>35 grams The average salinity of seawater is 35 parts per thousand, so multiply the mass of seawater provided by 0.035 and you'll get the amount of salt (mostly sodium chloride) dissolved in it. So 1000 g * 0.035 = 35 g Therefore in 1 kilogram of seawater with average salinity, there is 35 grams of salt.</span>
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3 years ago
How many atoms are present in 34.69 moles of Mg
shusha [124]
<span>Avogadro's number. 

1 mole of any substance, molecule or element is equal to a certain amount of atom. 

6.022 x 10^23 is the Avogradro's constant. 

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2.089 x 10^25 is also a correct answer.</span><span>
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7 0
2 years ago
The law of constant composition states: All atoms of a given element have a constant composition and are different than atoms of
Airida [17]

Answer:

C

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The law proves C. For examples no matter how water you have it will always have a 1:2 ratio of oxygen to hydrogen. :)

7 0
2 years ago
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