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EleoNora [17]
3 years ago
10

Which choice represents a compound?Required to answer. Single choice.

Chemistry
1 answer:
Citrus2011 [14]3 years ago
8 0

Answer:

CO

Explanation:

Elements will only one capital letter, that may/may not have a lower case letter after it. CO has a capital letter followed by another capital, so it's a compound

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A dry cleaning solvent (molar mass = 146.99 g/mol) is a compound containing C, H & Cl is suspected to be a cancer causing ag
poizon [28]

Answer:

Okay so set up an equation for what's happening

_C + _H + _Cl + O2 --> _CO2 + _H2O

0.451g of CO2. Convert to moles by using the molar mass of CO2 which is 44 g/mol. Now look at the ratio between Carbon and Oxygen in CO2. It's 1C:2O You just want to find C.. so do the number of moles CO2 and multiply it by 1 since the ratio says 1 carbon atom. Now you have moles of carbon. Put this number aside for later.

Do the same thing with H2O. Convert to moles by using the molar mass of H2O which is 18 g/mol. Now look at the ratio between Hydrogen and Oxygen. It's 2H:1O You just want H.. so do the number of moles of H2O and multiply it by 2 since there's 2 hydrogen atoms. Now you have the moles of hydrogen & put this number aside for later

Lastly, you need to find the chlorine. uuhhh I cant figure this part out

Explanation: ..

I hope I helped lol!

3 0
3 years ago
Which is the dependent variable in an experiment? 1.what I observe. 2. what I keep the same 3.What I change in the experiment. H
shtirl [24]

Answer:

1.what I observe.

Explanation:

The dependent variable in an experiment is what is being observed in the experimental procedure.

This variable is the one that is closely tied to the effects originating from changing the independent variables.

  • Independent variables are the ones that cause the observation being studied.
  • The effects produced and then studied are the dependent variables.
3 0
3 years ago
Why is it that the north star is the only star in the night sky that seems to stay still
Masja [62]

I think it is because it is directly about the north or south pole (I forget) so while all the other stars seem to rotate around because the Earth is rotating but the North Star is directly in the center. Don't take my word though.

8 0
4 years ago
Please help me with this homework
Stolb23 [73]
Havhzbjzbhx zbznsonshz Zbsjsis 1
sj xisn d sk shshs dj h Bs jshosusugs sjizhxbebs dnshs dns jsygs s. Si d d

6 0
3 years ago
What is the morality of 2.50 L of solution that contains 1.85 mol of anhydrous sodium tetraborate?
Lyrx [107]
That would just be 1.85 mol divided by 2.5L. So 0.74 mol/L or 0.74 M.
6 0
3 years ago
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