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SIZIF [17.4K]
3 years ago
12

In the formula CO2, what does the subscript 2 after the O mean

Chemistry
2 answers:
Soloha48 [4]3 years ago
7 0
2 oxygen atoms are being bonded with the carbon.


ozzi3 years ago
5 0
 it means two oxygen atoms
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9. poor growth of bones and teetn

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What is the oh of a solution with a ph of 9.8
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Which of these has a neutral ph? select one:<br> a. distilled water<br> b. salt water<br> c. milk?
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3 years ago
The percent composition of calcium is ?
DochEvi [55]

Answer: 40.1%

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5 0
3 years ago
One gram of liquid benzene is burned in a bomb calorimeter. The temperature before ignition was 20.826 C, and the temperature af
Licemer1 [7]

Answer:

fH = - 3,255.7 kJ/mol

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Because the bomb calorimeter is adiabatic (q =0), there'is no heat inside or outside it, so the heat flow from the combustion plus the heat flow of the system (bomb, water, and the contents) must be 0.

Qsystem + Qcombustion = 0

Qsystem = heat capacity*ΔT

10000*(25.000 - 20.826) + Qc = 0

Qcombustion = - 41,740 J = - 41.74 kJ

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n = 0.01282 mol

fH = -41.74/0.01282

fH = - 3,255.7 kJ/mol

4 0
3 years ago
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