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likoan [24]
3 years ago
7

Describe, in terms of electrons, the difference between a calcium atom and a calcium ion

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0

The Calcium atom has 2 valence electrons but a Calcium ion will have no electrons because it is a cation ion. Meaning that there are more protons than electrons. Also, the normal calcium symbol is Ca but the calcium ion is Ca²⁺

I hope this wasn't too late

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A carpet sells for 27.99 a square yard. What is the price of the carpet square per square meter ?
klio [65]
There are 9 square meters in one square yard so divide 27.99 by 9

27.99/9=3.11

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I hope I've helped!
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1. In which order does food travel through the digestive
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Explanation:

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Ethanol has a density of 0.791 g/mL. A student pipets enough volume in mL to obtain 120.0 g.
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5 0
2 years ago
The solubility of sodium hydrogen carbonate in water 20 degrees is 9.6 g/100 g h2o.
d1i1m1o1n [39]

We can see from the details below that, the value of the solution's molality is 1.14 mol/Kg.

<h3>What is solubility?</h3>

The term solubility has to do with the quantity of solute that is able to dissolve in a given quantity of solvent. We have the solubility of the sodium hydrogen carbonate in water at 20 degrees as 9.6 g/100 g h2o.

Number of moles of sodium hydrogen carbonate = 9.6 g/84 g/mol = 0.114 moles

Number of moles water = 100 g /18 g/mol = 5.55 moles

Mole fraction of sodium hydrogen carbonate is obtainable by the use of the relation;

0.114 moles/0.114 moles + 5.55 moles

= 0.02

Molality of the solution = 0.114 moles/0.1 Kg = 1.14 mol/Kg

Learn more about solubility:brainly.com/question/8591226

#SPJ4

6 0
2 years ago
What is the formula for iron (II) sulfate hexahydrate?
Agata [3.3K]

The formula for iron (II) sulfate hexahydrate

is

FeH12O10S

8 0
3 years ago
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