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wolverine [178]
4 years ago
10

Which one of these is a compound? a) air b) carbon dioxide c) oxygen and d) carbon

Chemistry
2 answers:
Vanyuwa [196]4 years ago
6 0
I think is b  carbon dioxide  
USPshnik [31]4 years ago
4 0
I believe its B from what i remember in biology class
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3 years ago
I find that there are 500 atoms of U-235 and 1500 atoms of Pb-207. If we assume the mineral contained only parent and no daughte
swat32

Explanation:

From the question it can be infered that initially only parent atoms were present in the rock and  no daughter atom. So, initially there was only uranium atom and no lead atom. So, in total there were 500+1500= 2000 uranium atom. And no lead tom was there.

3 0
4 years ago
the equilibrium concentrations were found to be [H2O]=0.250 M , [H2]=0.600 M , and [O2]=0.800 M . What is the equilibrium consta
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Answer:

Keq = 0.217

Explanation:

Let's determine the equilibrium reaction.

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2H₂(g)  + O₂(g)  ⇄  2H₂O (g)         Keq

Let's make the expression for the equilibrium constant

Products / Reactants

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3 years ago
What are diazonium salts?
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