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otez555 [7]
3 years ago
11

Using the graphs below, which group of moths is better adapted to survive the hunting cycle?

Chemistry
1 answer:
kolbaska11 [484]3 years ago
3 0
I don't know the details of the individual
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What is the mass of 1.72 moles of sodium nitrate? Use the periodic table and the polyatomic ion resource. A. 85.0 g B. 91.2 g C.
Mrac [35]
The answer is C. 146g because you add all of the masses of the individual elements and then mulyiply by 1.72 to get your answer.
7 0
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2) A container has an unknown quantity of gas at a pressure of 61.6 kPa, a volume of 3.9 liters, and a temperature
balu736 [363]

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Explanation:

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40 g of CaCO3 is how many moles of CaCO3?<br> 10 moles<br> 0.4 moles<br> 40 moles<br> 100 moles
AleksandrR [38]

Answer:

0.4 moles

Explanation:

To convert between moles and grams you need the molar mass of the compound. The molar mass of of CaCO3 is 100.09g/mol. You use that as the unit converter.

40gCaCO3* 1mol CaCO3/100.09gCaCO3 = 0.399640 mol CaCO3

This rounds to 0.4 moles CaCO3

8 0
3 years ago
Putting rock salt on the roads during a snowstorm is an example of: A. Boiling point elevation B. Vapor pressure raising C. Vapo
kvv77 [185]

Answer:

The correct answer is - D. Freezing point depression.

Explanation:

When rock salt is spread over snow-covered icy roads, it generates a liquid layer over it by melting from the surface thereby lowering or depression in the freezing point below the ice.

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7 0
3 years ago
What is the definition of lead in chemistry
abruzzese [7]

Answer:

Lead is a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point.

Explanation:

6 0
3 years ago
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