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agasfer [191]
3 years ago
15

Do only chemical reactions get colder/hotter?

Chemistry
1 answer:
qwelly [4]3 years ago
8 0
I did it for you I was at my moms and my dad and my mom and I were talking to
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The general name for hydrocarbons with at least one triple covalent bond is
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Alkynes are hydrocarbons with at least one triple covalent bond.
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How does the energy of an electron close to the nucleus compare to the energy of electrons farther away from the nucleus?
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The electrons closer to the nucleus would have more energy than the electrons farther away from the nucleus.
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When an iron nail is ground into powder, its mass ____.
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Explanation:

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3 0
3 years ago
A student has 100. mL of 0.400 M CuSO4 (aq) and is asked to make 100. mL of 0.150 M CuSO4 (aq) for a spectrophotometry experimen
GenaCL600 [577]

Answer:

We have to take 37.5 mL of a 0.400 M solution

Explanation:

Step 1: Data given

Stock volume = 100 mL  = 0.100L

Stock concentration 0.400 M

Volume of solution he wants to make = 100 mL = 0.100L

Concentration of solution he wants to make = 0.150 M

Step 2: Calculate the volume of 0.400 M CuSO4 needed

C1*V1 = C2*V2

⇒with C1 = the stock concentration = 0.400M

⇒with V1 = the volume of the stock = TO BE DETERMINED

⇒with C2 = the concentration of the solution he wants to make = 0.150 M

⇒with V2 = the volume of the solution made = 0.100 L

0.400 M * V1 = 0.150M * 0.100L

V1 = (0.150M*0.100L) / 0.400 M

V1 = 0.0375 L = 37.5 mL

We have to take 37.5 mL of a 0.400 M solution

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