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Alex
3 years ago
5

A latch on a desk drawer has two magnets designed to attract each other and keep the door shut. However, the magnets repel each

other on your desk. Can this be fixed? If so, how?
A) It cannot be fixed in any way.
B) It can be fixed by turning both magnets around.
C) It can be fixed by removing one of the magnets.
D) It can be fixed by turning one of the magnets around.
Chemistry
2 answers:
Sindrei [870]3 years ago
7 0

Answer:D

Explanation:

wariber [46]3 years ago
6 0
The answer would be D
Hope this helped
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What are the symbols (in order) for hydrogen, sodium and nitrogen?
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H, Na, N

Explanation:

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An ionic bond is a bond
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That involve the complete transfer of an electron from one atom of an element to another

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Analysis of an ore of calcium shows that it contains 13.61 g calcium and 21.77 g oxygen in a 46.28-g sample. Calculate the perce
kondor19780726 [428]

Answer:

29.41% of Calcium and 47.04% of Oxygen

Explanation:

The percent composition of an atom in a molecule is defined as 100 times the ratio between the mass of the atom and the mass of the molecule.

The mass of the molecule of the problem (Ore) is 46.28g. That means the percent composition of Calcium is:

13.61g / 46.28g * 100 = 29.41% of Calcium

And percent composition of Oxygen is:

21.77g / 46.28g * 100 = 47.04% of Oxygen

5 0
3 years ago
The number 40 in the name calcium-40 represents
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Answer:

A. the atomic number

Explanation:

It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth.

7 0
3 years ago
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A 4.24 kg marble slab has the volume of 1564 cm3 What is the density in g/cm3
miskamm [114]

Answer:

The answer is

<h2>2.71 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

volume of marble = 1564 cm³

1 kg = 1000 g

4.24 kg = 4240 g

mass = 4240 g

The density is

density =  \frac{4240}{1564}   \\  = 2.710997442...

We have the final answer as

<h3>2.71 g/cm³</h3>

Hope this helps you

7 0
3 years ago
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