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3241004551 [841]
3 years ago
8

2. Calculate the [H+] in the following solutions, given their pH, and identify the solution as acidic, basic or neutral.

Chemistry
1 answer:
givi [52]3 years ago
7 0

Answer:

a) acidic; [H+] = 10^-2.5 = 3 x 10^-3

b) basic; [H+] = 10^-11.7 = 2 x 10^-12

c) slightly acidic (almost neutral); [H+] = 10^-6.8 = 1.6 x 10^-7

d) acidic; [H+] = 10^-3.31 = 4.9 x 10^-4

Explanation:

pH < 7 is acidic; pH > 7 is basic; pH = 7 is neutral

[H+] = 10^-pH

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What is the concentration of a potassium iodate solution after you complete the following porcedure? Pipette 10 mL of a 0.31 M p
zubka84 [21]

<u>Given:</u>

Initial concentration of potassium iodate (KIO3) M1 = 0.31 M

Initial volume of KIO3 (stock solution) V1 = 10 ml

Final volume of KIO3 V2 = 100 ml

<u>To determine:</u>

The final concentration of KIO3 i.e. M2

<u>Explanation:</u>

Use the relation-

M1V1 = M2V2

M2 = M1V1/V2 = 0.31 M * 10 ml/100 ml = 0.031 M

Ans: The concentration of KIO3 after dilution is 0.031 M

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scientists often look for and attempt to explain patterns in nature. explain why patterns are important
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The haploid cell of an organism has 18 chromosomes. How much would a diploid cell have?
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A Diploid is a cell or organism that has paired chromosomes, one from each parent.

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6 0
3 years ago
Omar heated a small piece of calcium carbonate. It gave off carbon dioxide gas, solid calcium oxide was left behind.write equati
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Answer:

CaCO_{3s}  →  CO_{2g}   +   CaO_{s}  

Explanation:

Given reactants:

 Omar heated small piece of calcium carbonate

Product;

  it gave off carbon dioxide gas and solid calcium oxide;

Problem,

Equation of the reaction;

Solution:

 

 Calcium carbonate →  Carbon dioxide + Calcium oxide

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Read 2 more answers
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