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Alisiya [41]
3 years ago
11

What is a Cilla ? (In drawing)

Chemistry
1 answer:
max2010maxim [7]3 years ago
7 0
Just draw little hair like things many of them on the outside
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A mixture of 14.0 grams of H2, 84.0 grams of N2, and 64.0 grams of O2 are placed in a flask. The partial pressure of the O2 is 7
Hitman42 [59]

Answer:

P_{tot}=465.27torr

Explanation:

Hello there!

In this case, according to the given information, it will be possible for us to use the Dalton's law, in order to solve this problem. However, we first need to calculate the mole fraction of oxygen by firstly calculating the moles of each gas:

n_{H_2}=\frac{14.0g}{2.02g/mol} =6.93mol\\\\n_{N_2}=\frac{84.0g}{28.02g/mol}=3.00mol\\\\n_{O_2}=\frac{64.0}{16.00g/mol}  =2.00mol

Next, we calculate such mole fraction as follows:

x_{O_2}=\frac{2}{6.93+3+2} =0.168

Then, given the following equation:

P_{O_2}=P_{tot}*x_{O_2}

So we solve for the total pressure as follows:

P_{tot}=\frac{P_{O_2}}{x_{O_2}} \\\\P_{tot}=\frac{78.00torr}{0.168} \\\\P_{tot}=465.27torr

Regards!

6 0
3 years ago
How to Prevent Onions from Making You Cry
sergejj [24]

Answer:

Deleting everything except the first sentences of each numbered step.

Explanation:

The first sentences actually tell you what to do while the rest just explains why they're telling you to do it. If you read that article, all you would want to know are the steps to prevent crying while cutting onions, not necessarily the science behind those reasons.

6 0
4 years ago
Identify the combustion reaction
Paladinen [302]

Answer:

The combustion reaction is the last one, with the C4H12 compound.

Remember that all the combustion reactions has the oxygen as a substract and for products, you'll have CO2 and water.

Explanation:

3 0
3 years ago
The temperature of 150 mL of water is 25°C. What must happen for the
dangina [55]
It’s d because i know it’s d
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2 years ago
A student went to the dentist and found out that he had a cavity. He always brushes his teeth twice a day, so he didn't understa
Papessa [141]

Answer:E is an acidic

Explanation:

Soo he should avoid the drink E and in pH measurement the more acidic is below 7 and the the more alkali is above 7 and the neutral drink is B and it may a water ...

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