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DiKsa [7]
3 years ago
6

NEED HELP QUICK!!!!!!!!!!!!!!

Chemistry
1 answer:
Zigmanuir [339]3 years ago
3 0
The answer is Index fossils its the only answer it could be

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How many moles of Kl are needed to make 4.07 L of a 1.138 M solution?
Nata [24]

Answer:

A

Explanation:

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3 years ago
Which is the balanced equation for S8 + O2 → SO2?
topjm [15]

Answer: S8 + O2 → S8O2: not 100% sure

Explanation:

A balanced chemical equation happens when the quantity of the particles is required on the reactants side is equivalent to the quantity is the molecules in the items side.

7 0
2 years ago
PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!
Marina CMI [18]

Answer:

C

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2 years ago
What is the percent of hydrogen by mass in CH4O?<br> (H:1.00 amu, C: 12.01 amu, O: 16.00 amu)
cricket20 [7]

The mass percent of hydrogen in CH₄O is 12.5%.

<h3>What is the mass percent?</h3>

Mass percent is the mass of the element divided by the mass of the compound or solute.

  • Step 1: Calculate the mass of the compound.

mCH₄O = 1 mC + 4 mH + 1 mO = 1 (12.01 amu) + 4 (1.00 amu) + 1 (16.00 amu) = 32.01 amu

  • Step 2: Calculate the mass of hydrogen in the compound.

mH in mCH₄O = 4 mH = 4 (1.00 amu) = 4.00 amu

  • Step 3: Calculate the mass percent of hydrogen in the compound.

%H = (mH in mCH₄O / mCH₄O) × 100%

%H = 4.00 amu / 32.01 amu × 100% = 12.5%

The mass percent of hydrogen in CH₄O is 12.5%.

Learn more about mass percent here:brainly.com/question/4336659

3 0
2 years ago
What are elements represented by ?
makvit [3.9K]

A Chemical Symbol

need 20 characters

4 0
3 years ago
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