Answer:
C. 1.3 mol
Explanation:
PV = nRT
where P is absolute pressure,
V is volume,
n is number of moles,
R is universal gas constant,
and T is absolute temperature.
Given:
P = 121.59 kPa
V = 31 L
T = 360 K
R = 8.3145 L kPa / mol / K
Find: n
n = PV / (RT)
n = (121.59 kPa × 31 L) / (8.3145 L kPa / mol / K × 360 K)
n = (3769.29 L kPa) / (2993.22 L kPa / mol)
n = 1.26 mol
Round to two significant figures, there are 1.3 moles of gas.
Answer:
Two human needs are food and water. We need food to survive so we dont starve to death. And water is most important because without water after around five days, you die. Heat technology could be fire. We use fire to distill salt water. Distilling salt water boils the bacteria and so it would be safe to drink. We also use fire to cook the food we have gotten or hunted so we dont get infected with deadly bacteria and viruses.
Explanation:
Hope this helps. Have a nice day!
Answer:
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Explanation:
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Answer:
Mass of compound c = 6 g
Explanation:
Given:
Mass of compound a = 2.5 g
Mass of compound b = 3.5 g
Find:
Mass of compound c
Computation:
According to Law of conservation of mass
Mass of compound a + Mass of compound b = Mass of compound c
Mass of compound c = 2.5 + 3.5
Mass of compound c = 6 g