2 years ago

Can someone pls help, I’m sorry if it’s a lot

Chemistry

1 answer:

Helga [31]2 years ago

3 0

Answer: 2738

Explaining: you gotta add

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3 years ago

Read 2 more answers

How many moles of Cu do you need to react with 12 moles of O2? 2Cu(s) + O2(g) 2CuO(s)

zzz [600]

Answer:

24 mol Cu

General Formulas and Concepts:

Chemistry

Stoichiometry

Explanation:

Step 1: Define

RxN: 2Cu (s) + O₂ (g) → 2CuO (s)

Given: 12 moles O₂

Step 2: Stoichiometry

$12 \ mol \ O_2(\frac{2 \ mol \ Cu}{1 \ mol \ O_2} )$ = 24 mol Cu

Step 3: Check

We are given 2 sig figs.

Our final answer is in 2 sig figs, so no need to round.

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2 years ago

Express the following in scientific notation: 1. 158000 km 2. 0.000009782 L

slamgirl [31]

Answer:

1.58x10^5km

9.782x10^-6

Explanation:

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2 years ago

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Answer: mL of water that should be add

3.826mL

Explanation:

Check attachment

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3 years ago