What is the correct listing of renewable and non-renewable resources.

Chemistry

1 answer:

Aloiza [94]3 years ago

7 0

Answer:

i think its mammals

Explanation:

i hope this helps

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5) Which of the following acids will fully dissociate when in solution and would be the strongest

Umnica [9.8K]

Answer:

<h2>HCL ( Hydrogen-Chloride )</h2>

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3 years ago

Predict what will be observed in each experiment below. experimentpredicted observation (choose one) A student sees tiny bubbles

Andrew [12]

Answer:

The bubbles will grow, and more may appear.

Explanation:

The bubble seen in a carbonated soft drink are bubbles of CO2. These bubbles appear because the gas is dissolved under pressure in carbonated drinks.

If i squeeze the bottle, i am applying more pressure to the bottle hence more bubbles will appear in the bottle under this increased pressure.

Hence, if the student squeezes the bottle, the bubbles will grow, and more may appear.

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3 years ago

Which solution has the lowest freezing point?

Leokris [45]

<span>Correct Answer: Option 3 i.e. 30 g of KI dissolved in 100 g of water.

Reason:
Depression in freezing point is a colligative property and it is directly proportional to molality of solution.

Molality of solution is mathematically expressed as,
Molality = </span> $\frac{\text{Number of moles}}{\text{Weight of solvent (Kg)}}$ <span>

In case of option 1 and 2, molality of solution is 0.602 m. For option 3, molality of solution is 1.807 m, while in case of option 4, molality of solution is 1.205 m.

<u><em>Thus, second solution (option 2) has highest concentration (in terms of molality). Hence, it will have lowest freezing point</em></u></span>

3 0

4 years ago

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If you begin with 72 grams of Nickel, how many moles of Ni would you have?

Marianna [84]

Answer: 1.2 Moles of Nickel

Explanation:

So you have to transfer grams to moles.

You do this by dividing your beginning mass by the atomic mass of the element (found on the periodic table).

1 mole is equal to the atomic mass of the element. The atomic mass of Nickel is 58.6934 rounded to the proper significant figures will be 59.

72 Grams Nickel / 59 grams = 1.2 moles of Nickel

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3 years ago

What percentage of energy used in the u.s is produced from fossil fuels

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Fossil Fuels Account for Lowest Share of U.S. Energy Consumption in More than a Century. Fossil fuels supplied about 80 percent of the energy consumed in the United States in 2017, the lowest share since 1902, according to a new report from the U.S. Department of Energy.

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4 years ago