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Black_prince [1.1K]
3 years ago
13

Which of these is an example of pseudoscience?

Chemistry
2 answers:
lesya [120]3 years ago
8 0

Answer: D) predicting future events in a person's life based on the position of the moon

Explanation:  a collection of beliefs or practices mistakenly regarded as being based on scientific method.

lianna [129]3 years ago
6 0
I believe the answer is D, but not 100%
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MRCORRECT has answered the question

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Reaction B could produce a substance with a pH of...<br><br> 14.<br><br> 4.<br><br> 10.<br><br> 7.
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30.00 ml of a h2so4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 44.45 ml of a 0.1489
kodGreya [7K]

The concentration of the H2SO4 solution should be 0.1101 M.

Calculation of the concentration:

Since

Volume of H2SO4 = 30.00 mL = 0.030 L

Volume of NaOH= 44.45 mL = 0.04445 L

Concentration of NaOH= 0.1489 M

Now

The balanced equation is

H2SO4 + 2NaOH → Na2SO4 + 2H2O

Now the concentration of the H2SO4 solution is

b*Ca*Va = a*Cb*Vb

here,  b = the coefficient of NaOH = 2

Ca = ?

Va = the volume of H2SO4= 30.0 mL = 0.030 L

a = the coefficient of H2SO4 = 1

Cb = the concentration of NaOH = 0.1489 M

Vb = the volume of NaOH = 44.45 mL = 0.04445 L

Now

2*Ca*0.030 = 1* 0.1489* 0.04445

0.060 * Ca = 0.00661

Ca = 0.1101 M

Hence, The concentration of the H2SO4 solution is 0.1101 M.

Learn more about concentration here:

brainly.com/question/14106631

#SPJ4

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1 year ago
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