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3 years ago

PlS hurry i'm timed

Chemistry

2 answers:

Ludmilka [50]3 years ago

6 0

Answer:

the answer is (moon)

Explanation:

my best guess based on internet research

Gennadij [26K]3 years ago

4 0

Answer:

Moon... I did the assignment just a little while ago...

Explanation:

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sarah measures out 151 grams of SO2. how many moles is this? Express your answer to three significant figures.

svp [43]

150 g SO₂ = 2.36 mol SO₂

M_r = 32.06 + 2×16.00 = 32.07 + 32.00 = 64.06

Moles of SO₂ = 151 g SO₂ × [1 mol SO₂/64.06 g SO₂] = 2.36 mol SO₂

4 0

3 years ago

How many molecules of carbon dioxide and how many molecules of water would be produced from 4 molecules of methane (CH4) reactin

77julia77 [94]

Answer:

Explanation:

water would be produced from 4 molecules of methane (CH4) reacting with 8 molecules of oxygen (O2)

7 0

3 years ago

To three significant digit,what is the mass percentage of iron in the compound Fe2O3

svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

Mass percentage = $\frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3} }$ x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage = $\frac{2(55.85)}{159.7} x 100$ = 69.94% = 69.9%

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

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3 years ago

What does it mean if an experiment is replicable ? Why is it important that experiment be replicable

Murljashka [212]

Answer:

When an experiment is replicanle it means it is able to be done again.

Explanation:

It is important because You need to see if you get different results or if you messed up the first time

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3 years ago

What is the best definition

Ann [662]

Answer:

Explanation:

thermal expansion♡

7 0

2 years ago

Read 2 more answers