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adell [148]
3 years ago
7

Which phrase defines an aquifer? A. the total amount of precipitation that falls on an area in a year B. the network of streams

and rivers that flow into a large river C. a lake or a pond that is used to store water D. an underground geological formation that contains a large amount of water
Chemistry
2 answers:
Aleks04 [339]3 years ago
8 0
An aquifer is D. an underground geological formation that contains a large amount of water.
Andrew [12]3 years ago
8 0
D. an underground geological formation that contains a large amount of water
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C5H12 + 8O2 → 5CO2 + 6H2O<br><br> Calculate the energy change for the reaction:
KATRIN_1 [288]
C5H12 (l) + 8O2 (g) ----> 5CO2 (g) + 6H2O (l)
Delta H = -3505.8 kJ/mol

C (s) + O2 (g) -----> CO2 (g)
Delta H = -393.5 kJ/mol

H2 (g) + (1/2)O2 (g) ------> H2O (l)
Delta H = -286 kJ/mol

Possible answers:
a. +35 kJ/mol
b. + 1,073 kJ/mol
c. -4,185 kJ/mol
d. -2,826 kJ/mol
e. -178 kJ/mol
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Which of the following is NOT a renewable energy source?
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Silicon dioxide (quartz) is usually quite unreactive but reacts readily with hydrogen fluoride according to the following equati
Scrat [10]

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How do large storms and strong currents affect the coasts?
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a flask contains 2 gases. the first gas has a pressure of 0.76 atm and the second gas gas a pressure of 4,500 Pa. what is the to
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Answer:

The total pressure is 0,804 atm

Explanation:

We use Dalton's law according to which the sum of the partial pressures is equal to the total pressure of a gas mixture. We convert the pressure in Pascals to atmosphere (it can also be done in reverse):

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4500Pa----x= (4500Pa x 1atm)/101300Pa= 0,044 atm

P total= p1 + p2= 0,76 atm + 0,044 atm=0,804 atm

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