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vivado [14]
2 years ago
7

HELP DUE IN 7 minutes TwT

Chemistry
2 answers:
Keith_Richards [23]2 years ago
8 0

Answer:

answer is NA2S

Explanation:

A P E X

mario62 [17]2 years ago
4 0

Answer:

Answer is C

Explanation:

the valency of sulphur is 2 ans sodium is 1

by crossing it forms NA2S

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i think that sonoran toads would prosper and wood frogs would disappear

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because of the provided information

5 0
3 years ago
How many kilograms of NH3 are needed to produce 1.90x10^5 of (NH4)2SO4? Answer in scientific notation
leva [86]
Molar mass :

NH₃ = 17.0 g/mol

(NH₄)₂SO₄ = 132 g/mol

2 NH₃ + H₂SO₄ = (NH₄)₂SO₄

2 x 17 g NH₃ ------------ 132 g <span> (NH</span>₄)₂SO<span>₄
</span>( mass NH₃) ------------ 1.90 x 10⁵ <span> (NH</span>₄)₂SO<span>₄

( mass NH</span>₃) = (1.90 x 10⁵) x 2 x 17 / 132
<span>
( mass NH</span>₃) = 6460000 / 132
<span>
( mass NH</span>₃) = 48939.39 g
<span>
in kg :

48939.39 / 1000 = 48.93 kg = 4.893 x 10</span>¹ kg
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hope this helps!
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6 0
3 years ago
If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?
notka56 [123]

Answer:

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6 0
3 years ago
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DochEvi [55]

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3 0
3 years ago
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