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ira [324]
3 years ago
9

Perform the following operation and express the answer in scientific notation. 1.26x104 + 2.50x104 [?]x10​

Chemistry
1 answer:
ss7ja [257]3 years ago
4 0
Since your multiplying by the same number, 104, both terms, you can group them like this:
104(1.26+2.50)
104(3.76)
391.04

Knowing that scientific notation needs to be a number x, that’s greater or equal to 1, and less then 10.
3.9104 * 10^2
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3 years ago
How many mL of 0.013 M potassium hydroxide are required to reach the equivalence point in the titration of 75 mL 0.166 M hydrocy
umka21 [38]

Answer:

957.7mL

Explanation:

Using the formula below;

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Va = volume of acid (mL)

Cb = concentration of base (M)

Vb = volume of base (mL)

According to the information provided in this question:

Ca = 0.166 M

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Va = 75mL

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Using CaVa = CbVb

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6 0
2 years ago
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anygoal [31]

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Sr(OH)2

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