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skad [1K]
2 years ago
14

Ca(OH)2 is__ An acid A base A salt

Physics
1 answer:
svlad2 [7]2 years ago
5 0

Answer:

Explanation:

An acid has H as the metal as in HCl

A base has OH as the nonmetal. (so Ca(OH)^2 is a base)

A salt has neither.

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The internal energy of material is determined by
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The combined amount of kinetic and potential energy of its molecules
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Two models of the same compound are shown. In what way is Model A better than Model B?
astra-53 [7]

The correct answer is Model A shows the three-dimensional shape of the molecule, but Model B does not.

Explanation:

Model A and B show the structure of a molecule. In the case of model A, the structure is represented through the use of three-dimensional shapes, while in model B the structure is represented using the letters of each element and showing how each element is connected to others.

In this context, one feature that makes model A better is that this represents the molecule using a 3D model, which is better to understand how the molecule looks like and what is its structure. Moreover, both models are alike because they show the number of atoms of each element, although model A does not show the types of elements.

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3 years ago
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Convert 0.0375 kg to g
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Two vectors of magnitudes 30 units and 70 units are added to each other. What are possible results of this addition? (section 3.
Yanka [14]

Answer:

the correct answer is option C which is 50 units.

Explanation:

given,

two vector of magnitude = 30 units and of 70 units

to calculate resultants vector = \sqrt{a^2+b^2+2 a b cos\theta}

cos θ value varies from -1 to 1

so, resultant vector

=\sqrt{a^2+b^2-2 a b cos\theta}\ to\ \sqrt{a^2+b^2+ 2 a b cos\theta}

a = 30 units    and  b = 70 units

= \sqrt{30^2+70^2-2\times 30\times 70}\ to\ \sqrt{30^2+70^2+2\times 30\times 70}

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4 0
3 years ago
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