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SOVA2 [1]
2 years ago
11

What is 8.3 x 10^4 in standard form

Chemistry
1 answer:
seraphim [82]2 years ago
8 0

Explanation:

83,000 is 8.3x10^4 in standard form

when it's a positive move decimal to the right as many as exponent say

if it's negative move decimal to left and and zeros till you move what exponent says

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How many grams of CO are needed to produce 209.7 g Fe?<br><br> Fe2O3+3CO⟶3CO2+2Fe
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Answer:

157.8 g

Explanation:

Step 1: Write the balanced equation

Fe₂O₃ + 3 CO ⟶ 3 CO₂ + 2 Fe

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209.7 g × 1 mol/55.85 g = 3.755 mol

Step 3: Calculate the moles of CO needed to produce 3.755 moles of Fe

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The molar mass of CO is 28.01 g/mol.

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4 0
2 years ago
The mobile electrons of a pure metal are <br> called what
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