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Afina-wow [57]
3 years ago
14

The —————of the comet is on the opposite side of the common from the sun

Chemistry
1 answer:
Bas_tet [7]3 years ago
3 0

Answer:

i think A

Explanation:

because they leave a trail of light which is gas or whatever

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Please help me, it is due tonight!
mihalych1998 [28]

1. Double Replacement

2. Yes.

Hope this helps ^^

7 0
2 years ago
Read 2 more answers
10.A certain ion of an atom possesses 16 neutrons, a mass number of 31 and a charge
mars1129 [50]

Answer:

B. 13 electrons

Explanation:

Bcoz protons are the same with electrons and the neutrons too.

8 0
2 years ago
Keeping a bike indoor will stop it rusting true or false​
Aliun [14]

Answer: True because if you leave it outside and it rains on the bike it will cause rust. Keep it in the garage or something. :) I have a bike btw.

Explanation:

7 0
2 years ago
Read 2 more answers
A solution of copper sulfate (CuSO4) produced by bioleaching has a concentration of 0.319 g/dm3 Relative atomic masses (Ar): Cu
Tanya [424]

moles Cu produced : 0.002

<h3>Further explanation</h3>

Concentration of copper sulfate (CuSO₄) : 0.319 g/dm³

MW CuSO₄ :

\tt =63.5+32+4\times 16=159.5~g/mol

mol CuSO₄ /dm³ :

\tt \dfrac{0.319}{159.5}=0.002

CuSO₄⇒Cu²⁺ + SO₄²⁻

mol Cu : mol CuSO₄ = 1 : 1 , so mol Cu²⁺=0.002

6 0
2 years ago
a sample of concentrated nitric acid has a density of 1.41g/ml and contains 70.0% HNO3 by mass. what mass of HNO3 is present per
Thepotemich [5.8K]
If you assume you have just 1 liter of sample, you can calculate the mass.
1000mL x 1.4g/mL = 1410g
and 70% of that would be the nitric acid.
Multiplying 1410 by 0.7 would give you 987g, and converting that to moles would give you 15.67M.
Hope this helped! :)
8 0
2 years ago
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