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Elena-2011 [213]
3 years ago
6

When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0

Answer: it would be cation, 2+

Explanation: electrons are negatively charged by 1. So if you get rid of 2 electrons it would be positive and cation is used to represent positive ions.

inysia [295]3 years ago
6 0

The electrical charge of the calcium ion is +2.

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3.46 ⋅ 10 − 19 J

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You have 100. grams of potassium fluoride (KF). How many moles do you have? (1 mole KF = 58.09 g KF) *
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7 0
2 years ago
Choose the selection which correctly characterizes all three of the following substances in terms of whether they are polar or n
ohaa [14]

Answer:

SiH4 is nonpolar and BBr3 is nonpolar and SiF4 is nonpolar.

Explanation:

SiH4 is a non-polar compound. Though the Si–H bonds are polar, as a result of different electronegativities of Si and H. However, as there are 4 electron repulsions around the central Si atom, the polar bonds are arranged symmetrically around the central atom having a tetrahedral shape hence they cancel out making the compound nonpolar.

SiF4 is a nonpolar molecule because the fluorine atoms are arranged symetrically around the central silicon atom in a tetrahedral molecule with all of the regions of negative charge cancelling each other out just like in SiH4.

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4 0
2 years ago
A 2.950×10−2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by dissolving a sample of C3H8O3 in w
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The molality of the glycerol solution is 2.960×10^-2 mol/kg

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3 years ago
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