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lys-0071 [83]
3 years ago
9

____ 30. isotopes are atoms of the same element that

Chemistry
1 answer:
finlep [7]3 years ago
4 0
Isotopes are atoms of the same element that<span> has different masses.</span>
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In the reaction n2 + 3h2 ---&gt; 2nh3, how many grams of nh3 are produced if 25.0 g n2 reacts with excess h2? question 10 option
Lisa [10]
Molar mass of N2 = 28

Moles of N2 = 25 / 28 = 0.89

So, moles of NH3 produce = 2 x 0.89 = 1.78 

Note: H2 is in excess. so no need to care about it. 
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3 years ago
When dissolved in water, which of the following would conduct electricity the best?
Nitella [24]
Charged particles or ionic particles?
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How do you calculate mass using density and volume?
skad [1K]
Example:

Mass = ?

Density = 25 g/mL

Volume = 5 mL

therefore:

d = m / V

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7 0
3 years ago
Silicon has 2 isotopes, Silicon-28 with an abundance of 90% and Silicon-30 with an abundance of 10%. Find the AAM for Silicon.
JulsSmile [24]

Answer:

RAM

RAM = (mass \: of \:  ^{28} Si \:  \times \%abundance) + (mass \: of \:  ^{30} Si \:  \times \%abundance) \\ RAM = (28 \times 90\%) + (30 \times 10\%) \\ RAM = 25.2 + 3 \\ RAM = 28.2

5 0
3 years ago
Calculate the density of a solid if it has a mass of 8.47 g and a volume of 3.24 cms.
gtnhenbr [62]

Answer:

Density =2.614g/cms

Explanation:

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3 0
3 years ago
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