2 years ago

Which is a nonliving factor that defines a spruce-fir forest ecosystem?

Chemistry

2 answers:

Zanzabum2 years ago

5 0

Soil because trees, bacteria, and mammals are living organisms/things and soil is not.

VashaNatasha [74]2 years ago

4 0

A is the right answer

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Reproductive cells contain only _____ gene copy.

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Reproductive cells contain only four gene copy.

Explanation:

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3 years ago

What is a term that is used that a liquid changes to a solid or a liquid changes to a gas?

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The term is change of state

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2 years ago

What is the density of an object that has a mass of 62.4grams and a volume of7.6cm^3?

Monica [59]

Answer:

<h3>The answer is 8.2 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 62.4 g

volume = 7.6 cm³

We have

$density = \frac{62.4}{7.6} \\ = 8.2105263157...$

We have the final answer as

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2 years ago

A type of cuckoo clock keeps time by having a mass bouncing on a spring, usually something cute like a cherub in a chair. What f

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Explanation:

Below is an attachment containing the solution.

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2 years ago

To determine the freezing point depression of a LiCl solution, Toni adds 0.317 g of LiCl to the sample test tube along with 20.5

Natali [406]

Answer:

0.365 m

Explanation:

The <em>definition of molality</em> is:

molality = moles of solute / kg of solvent

First <u>we calculate the moles of the solute, LiCl</u>. We do so using its <em>molar mass</em>:

0.317 g ÷ 42.394 g/mol = 7.48x10⁻³ mol

Then we calculate the mass of the solvent, water. We do so using its <em>density</em>:

20.5 mL * 0.9982 g/mL = 20.5 g

20.5 g / 1000 = 0.0205 kg

Finally we <u>calculate the molality of the solution</u>:

7.48x10⁻³ mol / 0.0205 kg = 0.365 m

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2 years ago