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Dennis_Churaev [7]
3 years ago
13

On which energy level are the valence electrons for calcium (Ca) ?

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
7 0
The fourth (last) one in 2-8-8-2.
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Scientific knowledge
Cloud [144]

Answer:

The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer

The average global temperature of the Earth has increased by almost two degrees in the last century.

Explanation:

8 0
3 years ago
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Write a balanced chemical equation based on the following description: aqueous potassium phosphate reacts with aqueous nickel(II
Sunny_sXe [5.5K]

Answer:

2 K3(PO4) aq  + 3NiBr2 aq  -------- 6 KBr  aq +  Ni3(PO4)2  s

Explanation:

8 0
3 years ago
45 grams of NaOH to moles
Levart [38]

Answer:

1.125moles

Explanation:

mass of NaOH,m= 45g

molar mass of NaOH, M= 23+16+1

= 40g/mol

mole,n =m/M

n= 45/40

n=1.125mole

7 0
3 years ago
Indique cuáles son las unidades de la molaridad * <br> eq-g/m³ <br> eq-g/L <br> mol/cm³ <br> mol/L
Westkost [7]

Answer:

hm

Explanation:

3 0
3 years ago
What must be true of the net charge for any sample of sodium chloride
Ede4ka [16]

Answer:

Zero (0)

Explanation:

Since Na^+ has a charge of +1 and Cl^- has a charge of —1 in NaCl

Then the net = +1 —1 = 0

4 0
4 years ago
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