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Kobotan [32]
3 years ago
11

Doing Science plz help

Chemistry
2 answers:
tekilochka [14]3 years ago
6 0
The answer is C
Because it’s balanced you know this because of law conversion of mass.
Murljashka [212]3 years ago
4 0

Answer:

My guess is b or c but its robably wrong

Explanation:

I just also need points sorry <3

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13. An organic compound is found to contain 77.42% of C, 7.53% of H and
ivann1987 [24]

Answer

7.53% 97% if you divide it you can get the answer

Explanation:

8 0
3 years ago
Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.
kherson [118]

Answer:

The partial pressure of the other gases is 0.009 atm

Explanation:

Step 1: Data given

Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules and 1% of other gases.

The atmospheric pressure = 0.90 atm

Step 2: Calculate mol fraction

If wehave  100  moles of air, 78 moles will be nitrogen,

21  moles will be  oxygen, and  1  mol will be other gases.

Mol fraction = 1/100 = 0.01

Step 3: Calculate the partial pressure of the other gases

Pgas = Xgas * Ptotal

⇒ Pgas = the partial pressure = ?

⇒ Xgas = the mol fraction of the gas = 0.01

⇒Ptotal = the total pressure of the pressure = 0.90 atm

Pgas = 0.01 * 0.90 atm

Pgas = 0.009 atm

The partial pressure of the other gases is 0.009 atm

4 0
3 years ago
(GIVING BRAINLIEST) do what the following image says.
S_A_V [24]

Answer:

hope it helps.

<h3>stay safe healthy and happy.<u>.</u><u>.</u></h3>

7 0
3 years ago
Read 2 more answers
How many moles of magnesium, Mg, are there in 4.75 grams of magnesium?
Nina [5.8K]
Molar mass Mg = 24.3 g/mol

1 mole mg ------------ 24.3 g
?? moles mg --------- 4.75 g

4.75 x 1 / 24.3 => 0.195 moles of Mg

hope this helps!
3 0
3 years ago
The question is in the screenshot
Sunny_sXe [5.5K]

Answer:

dear jesus i need glasses

Explanation:

6 0
3 years ago
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