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sp2606 [1]
2 years ago
7

Which element has properties most like Mg?

Chemistry
1 answer:
Otrada [13]2 years ago
7 0

Answer:

The elements which are in the group

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Calculate the dissociation constant of nh4oh(aq) if the degree of dissociation of 0.006 mol/kg solution is 0.053 and the activit
Anastasy [175]

The dissociation equation will be

                         NH4OH   --->        NH4+                   + OH-

Initial                 0.006                        0                          0

Change         -0.006 X 0.053        +0.006 X 0.053      -0.006 X 0.053

Equlibrium     0.006 -0.006 X 0.053      0.006 X 0.053    0.006 X 0.053

Ka = [NH4+] [ OH-] / [NH4OH] = (0.006 X 0.053)^2 / 0.006 -0.006 X 0.053

Ka = 1.78 X 10^-5

7 0
3 years ago
Which of these oxides will likely form a colored solution when dissolved in water?
Alik [6]

Mn₂O

Explanation:

The oxide that will most likely form colored solutions is Mn₂O.

This is because most transition metals form colored compounds. Manganese is a transition metal belonging to the d-block on the periodic table.

  • Other examples of transition metals are scandium, titanium, iron, copper, cobalt, nickel, zinc
  • They belong to the d-block on the periodic table.
  • They have variable oxidation states.
  • Most of their solutions are always colored.

Learn more:

Periodic table brainly.com/question/8543126

#learnwithBrainly

7 0
4 years ago
Question 3
Anni [7]

Answer:

True

Explanation:

Sometimes you will need to convert from grams to moles, or moles to grams

5 0
3 years ago
Is mixing paint a physical change if it is why
Anarel [89]
Paint changes color to the physical eye.
4 0
4 years ago
Acidic solitions change blue litmus payer to<br>A.pink <br>B.yellow <br>C.red<br>D.colorless​
Ad libitum [116K]

Answer:

D probably

Explanation:

4 0
3 years ago
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