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Vera_Pavlovna [14]
3 years ago
13

Reaction rate depends on how often molecules come into contact with each other, the way in which they come together, and the amo

unt of energy they have when they come in contact.
Which of the following factors would you expect to affect the way in which molecules affect each other?
A) volume
B) catalysts
C) pressure
D) temperature
Chemistry
2 answers:
loris [4]3 years ago
5 0
The most appropriate answer is D ! temperature !

as when temperature increases KE increases and the collision factor and frequency increases !
Aliun [14]3 years ago
3 0
I know that the volume wouldn't have much affect because putting the 2 molecules together would cause the volumes density. I believe it would be the catalyst. I'm not completely sure because I haven't taken science in soo long.
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Explanation:

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How many atoms are in 4 mol Zn?
Brut [27]
To covert from moles to atoms times the number of moles by Avogadro's Number (6.022×10²³)

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6 0
3 years ago
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration o
HACTEHA [7]

Answer:

1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Explanation:

From the question given above, the following were obtained:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Volume of solution = 20.4 mL

Concentration of solution =?

Next, we shall determine the mass of sodium hydroxide, NaOH. This can be obtained as as illustrated below:

Mass of empty cylinder = 9.5 g

Mass Cylinder + NaOH = 31.92 g

Mass of NaOH =?

Mass of NaOH = (Mass Cylinder + NaOH) – (Mass of empty cylinder)

Mass of NaOH = 31.92 – 9.5

Mass of NaOH = 22.42 g

Finally, we shall determine concentration of the solution as follow:

Mass of NaOH = 22.42 g

Volume of solution = 20.4 mL

Concentration of solution =?

Concentration = mass /volume

Concentration of solution = 22.42 / 20.4

Concentration of solution = 1.099 gmL¯¹ ≈ 1.1 gmL¯¹

Therefore, the concentration of the solution is 1.1 gmL¯¹

3 0
3 years ago
Which can occur during a physical change? (Select all that apply.)
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Answer:

the shape of a piece of matter can change

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which method would be best for separating the compounds of a mixture that is made from two diffrent liquids
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