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padilas [110]
2 years ago
13

Which of the following is an example of chemical weathering?

Chemistry
1 answer:
ivanzaharov [21]2 years ago
7 0
Yes it is acid rain because the following weather is a example of chemical. So D
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A single atom of an element has 21 nutrons 20 electtons and 20 protons which element is it
guajiro [1.7K]

your element would be calcium


7 0
3 years ago
Which of the following polyatomic ions will form an ionic compound with a single sodium ion? CO32− PO43− SO42− NO31−
Artist 52 [7]

A single sodium ion will combine due to its charge on it

Na^+

The single sodium ion has total one positive charge on it. so it requires only one electron or can bond to one negative charge

in the given polyatomic anions

a) CO3^-2 : it has two negative charge. So it will react with two sodium ions

it will forms Na2CO3

b) PO4^-3 :it has three negative charge. So it will react with three sodium ions

it will forms Na3PO4

c) SO4^-2 : it has two negative charge. So it will react with two sodium ions

it will forms Na2SO4

d) NO3^-1: it has one negative charge. So it will react with one sodium ion

it will forms NaNO3

Hence the correct answer is

Nitrate ion will react with single sodium ion as

Na+   + NO3-  ---> NaNO3

4 0
3 years ago
Which of these is an example of an abiotic factor?
dolphi86 [110]

What are the choices? I'll answer once you tell me those

8 0
3 years ago
Solid iron(II) oxide reacts with oxygen gas to produce solid iron(III) oxide. Balance the equation for this reaction (in lowest
oksian1 [2.3K]

Answer

Hello

I think the reaction is like this FeO+OFe²O³

And the balance reaction is 2Fe+OFe²O³

Explanation:

At first we should find sth that has more atoms than the other then for example we realized that we have two atoms of Fe in Fe²O³ then put 2 before FeO and now we have 2 atoms of Fe in right side and 2 atoms of Fe in left then Oxygen in FeO change to 2 atoms of Oxygen and we have an other one in right side that they become 3 atoms of Oxygen and now we have 3 atoms of Oxygen in both right and left side.

Finally our reaction balanced.

Good luck

6 0
2 years ago
The box shows the element nitrogen as it appears in the periodic table.
Helen [10]

Answer:

I am 90% sure it is A - if I am wrong please let me know so I can fix my mistakes and improve

Explanation:

6 0
2 years ago
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