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ivolga24 [154]
3 years ago
13

A change that produces one or more ___________________ is a chemical change or chemical reaction.

Chemistry
2 answers:
posledela3 years ago
8 0

Answer:

New Substances. type that in.

Explanation:

Arada [10]3 years ago
4 0

Answer:

A change that produces one or more new substances is a chemical change or chemical reaction.

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Alona [7]

Answer:

I'm taking a guess here. Aluminum.

Explanation:

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3 years ago
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3 years ago
how can you find the Frequency if you only have the wavelength? can you solve this example what is the Frequency of the waveleng
DiKsa [7]

Answer:

75000 Hz

Explanation:

f = V / λ (f= frequency, v=velocity of wave, lambda= wavelength)

alternatively, f = c / λ (f= frequency, c= speed of light- 3.00x10^8 m/s, lambda= wavelength)

f= [3.00x10^8 m/s]/[4000 m]

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3 0
3 years ago
The pka of hf is 3.2 determine the pkb of hf?
Julli [10]

Well, first we must remember that

pK_{a}+pK_{b}=14

This is because

K_{a}*K_{b}=10^{-14}

-log(K_{a}*K_{b})=-log(10^{-14})\\-logK_{a}+-logK_{b}=-log(10^{-14})\\pK_{a}+pK_{b}=14

So then

pK_{b}=14-pK_{a}=14-3.2=1.8

7 0
3 years ago
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How many moles are there in 3.45 moles of Carbon
VladimirAG [237]

Answer:

It would be 151.832775 because one mole is 44.0095*3.45 i hope this helps!

Explanation:

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