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Anna71 [15]
3 years ago
6

Which best describes a mixture? It has a single composition, and it has a set of characteristics that does not change. It can ha

ve different compositions, but it has a set of characteristics that does not change. It has a single composition, but it has a set of characteristics that does change. It can have different compositions, and it has a set of characteristics that does change.
Chemistry
1 answer:
klemol [59]3 years ago
3 0

Answer:

option 4 - it can have different compositions, and it has a set of characteristics that change.

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8. When rubidium and fluorine combine to produce the compound RbF, che ions
skelet666 [1.2K]

Answer:

The answer is C, both krypton and neon.

Explanation:

I got the answer wrong and my teacher told me that c is the right answer choice

8 0
3 years ago
A student is told to use 20.0 grams of sodium chloride to make an aqueous solution that has a concentration of 10.0 grams of sod
Butoxors [25]

Volume of the solution = 20.0 g NaCl * \frac{1 L solution}{10.0 g NaCl}

= 2 L solution x \frac{1000 mL}{1 L} =2000 mL

Volume of solute = 7.5 mL

Volume of water (solvent) = 2000 mL - 7.5 mL = 1992.5 mL water

7 0
3 years ago
Which method can you use to investigate the compressibility of a gas?
Alina [70]

Answer: Option (b) is the correct answer.

Explanation:

It is known that in a gas, molecules are away from each other due to more kinetic energy between its particles. As a result, there are more number of collisions between them.

So, when we apply pressure on a gas then its molecules come closer to each other. Due to which there occurs decrease in its volume.

Thus, we can conclude that to investigate the compressibility of a gas increase the pressure on it.

3 0
3 years ago
What is the volume of 5.8g of H2?
BartSMP [9]
At standard temperature and pressure, one mole of gas occupies 22.4 L. Knowing this, we must convert the grams to moles and moles to liters to get your answer. Here's how you do it!
\frac{5.8gH2}{1} | \frac{1moleH2}{2.0gH2}| \frac{22.4LH2}{1moleH2}   \\  \frac{5.8*1*22.4LH2}{2.0} \\  \frac{129.92LH2}{2.0}  \\ 64.96LH2  \\ 65LH2
With significant figures accounted for, 5.8 grams of hydrogen gas occupies 65 L.

Hope this helps!
4 0
4 years ago
Which of these is most commonly found in its liquid form? O A. Hydrogen OB. Oxygen O C. Helium O D. Water​
Sergeeva-Olga [200]

Answer:

Water

Explanation:

6 0
3 years ago
Read 2 more answers
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