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pochemuha
3 years ago
9

The salts in the sea come from

Chemistry
1 answer:
Luda [366]3 years ago
4 0
D) organisms that live in the sea
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An atom has a mass number of 22 and an atomic number of 12. How many neutrons<br> does it have?
tia_tia [17]

Answer:

this isn't correct answer but the equation is correct by using this methid you can got your answer .

Explanation:

Given - Mass number of atom = 23

                                Atomic number of atom = 11

As, no. of electrons in an atom is equal to an atomic number of the element.

So, number of electrons = 11

Secondly , number of protons are equal to number of electrons.

so, number of protons = 11

And number of neutrons = mass number - atomic number = 23−11 = 12

so, number of neutrons = 12

So , the atom contains 11 protons, 11 electrons, 12 neutrons.

4 0
3 years ago
A substance undergoes a change. Which of the following indicates that the change
LekaFEV [45]

Answer:

change of color

Explanation:

when a substance undergoes a change of color it is an indication that it was chemical

5 0
3 years ago
How many significant figures are in the number 0.00346
Oliga [24]

Answer:

3

Explanation:

Significant figures are the number of digits in a value, often a measurement, that to the degree of accuracy of the value. All non-zero numbers ARE significant. ...

Zeros between two non-zero digits ARE significant. ...

Leading zeros are NOT significant. ...

Trailing zeros to the right of the decimal are significant. ...

Trailing zeros in a whole number with the decimal shown ARE significant.contributes

8 0
3 years ago
How long does it take to travel a distance of 260 miles at a speed of 96 km/h?
Inga [223]

Answer:

4 hours,19 minutes,60 seconda

Explanation:

just add everything up

4 0
2 years ago
What does animals exhale?
Mademuasel [1]

Answer:

Carbon dioxide

Explanation:

Humans are animals and we exhale carbon dioxide

6 0
3 years ago
Read 2 more answers
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