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timofeeve [1]
3 years ago
5

Which of the following statements is true?

Chemistry
1 answer:
8090 [49]3 years ago
6 0
C - reactions can absorb energy (called endothermic reactions) or release it (called exothermic reactions)
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In a problem, you are given two pressures and one temperature at constant volume and amount of gas. You are asked to find a seco
laiz [17]

I don't know who it was named for but the law is

P1/T1 = P2/T2

Make sure the pressure units are the same (atmospheres or kPa usually) and that the temperature is in Degrees Kelvin which is derived from Celsius degrees.

Try Charles' Law for the name.

3 0
3 years ago
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Calculate the volume in cm^3 of 325.0 dg of alcohol. Alcohol has a density of 0.785g/mL.
Masteriza [31]
Answer:
106 mL

Explanation:
In order to be able to answer this question, you must understand what the density of a substance tells you.
The density of a substance is nothing more than the mass of that substance that occupies one unit of volume.
In your case, the density of ethanol is given in Grams per milliliter, which means that one unit of volume will be
1 mL
.
So, ethanol has a density of
0.785 g mL
−
1
, which is equivalent to saying that if you take exactly
1 mL
of ethanol and weigh it, you will end up with a mass of
0.785 g
.
Now, you know that the volume you're using has a mass of
83.3 g
. Well, if you get
0.785 g
for every
1 mL
of ethanol, it follows that this much mass will correspond to a volume of
83.3
g ethanol
⋅
ethanol's density

1 mL
0.785
g ethanol
=
106.11 mL
Rounded to three sig figs, the answer will be
V
ethanol
=
106 mL



Hope this helps
5 0
2 years ago
If a dog has a mass of 21.5kg, what is his mass in the following units?
PolarNik [594]

Answer: 21.5kg in grams is 21,500 grams

21.5kg in mg is 215,000,00

Explanation:

5 0
3 years ago
How does molecular shape affect polarity?
Andrej [43]

Answer:

Letter D

Explanation:

6 0
2 years ago
Read 2 more answers
Which measurement would not be possible to obtain from the triple beam balance shown? a. 558.6 g b. 463.455 g c. 2.4 g d. 100.0
kirza4 [7]

Answer: B. 463.455 g

Explanation:

8 0
2 years ago
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