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irga5000 [103]
4 years ago
6

How many atoms are in 8 gram of helium

Chemistry
1 answer:
Yuri [45]4 years ago
5 0
There are two atoms..............
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ethanol is a common laboratory solvent and has a density of 0.789 g/mL. what is the mass, in grams, of 151 mL of ethanol
natta225 [31]
<em>V = 151 mL = 151 cm³</em>
<em>d = 0,789 g/mL = 0,789 g/cm³</em>
--------------------------------------

d = m/V
m = d×V
m = 0,789×151
<u>m = 119,139g</u>

3 0
3 years ago
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Kazeer [188]

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It should be polarity

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____ is converted to carbohydrate by plants during photosynthesis.
Ratling [72]
Carbon dioxide 
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5 0
4 years ago
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Are elements considered to be substances?
Schach [20]

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C. Yes, because they have a definite composition.

Explanation:

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7 0
3 years ago
NH3 +<br>H2SO4 → __(NH4)2SO4​
Zielflug [23.3K]

Answer:

This is not a balanced equation

Explanation:

Let's make it a balanced equation.

2 NH3 + H2So4 = (NH4)2So4

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