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2 years ago

An increase in aurora activity on Earth could be related to what activity on the Sun?

Chemistry

1 answer:

Zepler [3.9K]2 years ago

6 0

Answer:

Explanation:

INCREASE OF SOLAR WINDS When the sun is more active

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The freezing point of pure chloroform is -63.5°C, and its freezing point depression constant is 4.07°C•kg/mol. If the freezing p

Nady [450]

Answer:

-20.22

Explanation:

4 0

2 years ago

1. Which of the following is NOT a cation?

Bezzdna [24]

Hey Madoudou

The correct answer is option B (sulfate)

The reason is because "Sulfate" has a negative sign.

In order for it to be a cation, it must have positive sign such as "iron(lll)ion

I hope this helps~

3 0

3 years ago

Please help! BRAINLIEST to first right answer! aaa

Whitepunk [10]

Answer:

answer is A

Explanation:

the answer is A

5 0

3 years ago

Nuclear decay<br>27Al + He 》 39P<br>

dybincka [34]

Answer:

$_{13}^{27}\text{Al} + \rm _{2}^{4}\text{He} \longrightarrow \, _{15}^{31}\text{P}$

Explanation:

The unbalanced nuclear equation is

$^{27}\text{Al} + \rm \text{He} \longrightarrow \, ^{31}\text{P}$

We can insert the subscripts, because these are the atomic numbers of the elements

$_{13}^{27}\text{Al} + \, \rm _{2}\text{He} \longrightarrow \, _{15}^{31}\text{P}$

That leaves only the superscript of He to be determined,

The main point to remember in balancing nuclear equations is that the sums of the superscripts must be the same on each side of the equation.

Then

27 + x = 31, so x = 31 - 27 = 4

Then, your nuclear equation becomes

$_{13}^{27}\text{Al} + \, \rm _{2}^{4}\text{He} \longrightarrow \, _{15}^{31}\text{P}$

6 0

3 years ago

Name one homogenous mixture from salt, sand and iron

Bezzdna [24]

Answer:

heterogeneous mixture or a chemical mixture

4 0

2 years ago