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Bond [772]
3 years ago
13

What is 80% as a ratio

Chemistry
1 answer:
Rashid [163]3 years ago
7 0

Answer:

4 : 5

Explanation:

80 percent can be written as:

80/100

Now we can reduce the above fraction to its lowest term as shown below

80/100 = 8/10

Divide both the numerator and denominator by 2.

8/10 = 4/5

Now, we can not divide further. So the ratio becomes 4 : 5

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Which is an element?<br> A: H20<br> B: NaCl<br> C: Mg<br> D: CO
Talja [164]
The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in <span>1735, it's boiling point is 3200 k.</span>

Atomic mass: 58.9332
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Electrons: 27

Hope this helps!

3 0
3 years ago
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Can I please Get Help with this question ‍♂️ ?
Nitella [24]

Answer:

Mg(NO4)2 is 180.3 g/mol

Explanation:

First find the substance formula.

Magnesium Nitrate.

Magnesium is a +2 charge.

Nitrate is a -1 charge.

So to balance the chemical formula,

We need 1 magnesium atom for every nitrate atom.

2(1) + 1(-2) = 0

So the substance formula is Mg(NO4)2.

Now find the molar mass of Mg(NO4)2.

Mg = 24.3 amu

N = 14.0 amu

O = 16.0 amu

They are three nitrogen and twelve oxygen atoms.

So you do this: 24.3 + 14.0(2) + 16.0(8) = 180.3 g/mol

So the molar is mass is 180.3 g/mol.

The final answer is Mg(NO4)2 is 180.3 g/mol

Hope it helped!

7 0
3 years ago
In order to keep the bench from conducting heat, Shane could build it out of _______.
lara31 [8.8K]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ In order to keep the bench from conducting heat, Shane could build it out of wood. Wood doesn't conduct heat so this would work best for Shane.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

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Which of the following events could increase Earth's temperature?
Tcecarenko [31]
I believe the answer Is B
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Use the drop-down menus to classify the elements as alkali metals, alkaline earth metals, or transition metals.
aleksley [76]
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I attached a color-coded, labelled period table that will help to see the derivative of my responses.

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