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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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the atomic number tells you the number of _______ in one atom of an element. It also tells you the number of ______ in a neutral
uysha [10]

Answer:

Protons, electrons, same in that order is the answer.

Explanation:

this has to do with the periodic table information.

5 0
3 years ago
Suppose that a newly discovered element called centium has 3 isotopes that occure in nature. These are centium -200, centium -20
vodomira [7]

Answer:

The answer to your question is 203.8 g

Explanation:

Data

Average atomic mass = ?

Centium-200

Centium-203

Centium-209

Equal amounts

Process

1.- Determine the abundance of each isotope.

If they are in equal amounts in nature, just divide 100 by 3

             100/3 = 33.33 % or 0.333

2.- Determine the Average atomic mass

Average atomic mass = Atomic mass 1 x abundance + Atomic mass 2 x

                                        abundance + Atomic mass 3 x abundance

- Substitution

Average atomic mass = 200 x 0.333 + 203 x 0.333 + 209 x 0.333

- Simplification

Average atomic mass = 66.6 + 67.6 + 69.6

Result

Average atomic mass = 203.8 g

3 0
3 years ago
Assuming the same temperature and pressure for each gas, how many milliliters of carbon dioxide are produced from 16 0 mL of CO
aivan3 [116]

Answer:

V_{CO_2}=16.0mL

Explanation:

Hello,

In this case, given that the same temperature and pressure is given for all the gases, we can notice that 16.0 mL are related with two moles of carbon monoxide by means of the Avogadro's law which allows us to understand the volume-moles relationship as a directly proportional relationship. In such a way, since in the chemical reaction:

2CO(g)+O_2(g)\rightarrow 2CO_2(g)

We notice two moles of carbon monoxide yield two moles of carbon dioxide, therefore we have the relationship:

n_{CO}V_{CO}=n_{CO_2}V_{CO_2}

Thus, solving for the yielded volume of carbon dioxide we obtain:

V_{CO_2}=\frac{n_{CO}V_{CO}}{n_{CO_2}} =\frac{2mol*16.0mL}{2mol}\\ \\V_{CO_2}=16.0mL

Best regards.

7 0
3 years ago
In DNA, what base pairs with cytosine?
adell [148]
The answer is C guanine and thymine goes with adenine these pairs will always be the same a=t g=c
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