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Dafna11 [192]
2 years ago
13

Question 6

Chemistry
1 answer:
I am Lyosha [343]2 years ago
4 0

Answer:

A. is the correct point.

Explanation:

This is true because no matter how many mL of water is added, the solution only gets more height; the concentration in everything else stays the same, and water doesn't have any concentration. Very confusing, I know. Good luck!

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What are the stable isotopes of carbon?
andreyandreev [35.5K]
Answer:

The stable isotopes of carbon are carbon-12 (12C) and carbon-13 (13C).

I hope this helps! :)
3 0
3 years ago
The chemical formula of ordinary sugar is C12H22O11. Calculate the mass of 7.35 mol of sugar.
ch4aika [34]

First, you need to find the mass of 1 mol of sugar. Mass, or molar mass, can simply be found by adding the masses of the individual elements. These are given to you on the periodic table.

C_{12}H_{22}O_{11}

12 x 12.011 grams (molar mass of Carbon) = 144.132 g

22 x 1.008 grams (molar mass of Hydrogen) = 22.176 g

11 x 15.999 grams (molar mass of Oxygen) = 175.989 g

Add all of the pieces together.

144.132 g + 22.176 g + 175.989 g = 342.297 grams

So, if one mole has 342.297 grams, then 7.35 of that amount will be your answer.

342.297 g/mol x 7.35 mol =  2,515.88 grams

7 0
3 years ago
How many moles of water are produced from 32 grams of methane?
aleksklad [387]

Answer:

4 moles

Explanation:

n_{CH4} = \frac{32}{16} = 2 (moles)

CH4 + 2O2 → CO2 + 2H2O

  1     :    2    :     1    :      2

  2                                         (moles)

⇒ n_{H2O} = 2 × 2 ÷ 1 = 4 (moles)

4 0
2 years ago
The pressure inside a gas cylinder is 3,506 mmHg. How many atmospheres of pressure is the gas exerting on the cylinder?
PSYCHO15rus [73]
Below are the choices:

a)0.2168 atm 
<span>b)4.613 atm </span>
<span>c)34.60 atm </span>
<span>d467.4 atm 
</span>
1 atm = 760mmHg : Therefore: 
<span>3,506mmHg = 3,506/760 = 4.613 atm 
</span>B is correct answer. 

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
7 0
2 years ago
Read 2 more answers
The entire range of electromagnetic wave frequencies is known as ______.
Vilka [71]
The entire range of electromagnetic frequencies is known as C, the electromagnetic spectrum.

Television remote controls (D) do NOT use radio waves (they use infrared radiation).

A material that allows some, but not all, light to pass through it, would be described as translucent (C).
8 0
3 years ago
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