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3 years ago

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When 6.36 g of metallic chromium is heated with elemental chlorine gas, 19.37 g of a chromium chloride salt results. Calculate t

he empirical formula of the compound

1 answer:

kupik [55]3 years ago

3 0

Explanation:

Below is an attachment containing the solution.

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Some students were building models of solids, liquids, and gases by gluing plastic balls to a sheet of cardboard. which of their

JulsSmile [24]

Below picture contains the given models.

Answer:
Option-B is the correct model.

Explanation:
Solid is a state of matter in which the particles are closely packed, has definite volume and shape. Like liquids they don't flow, either they occupy the volume of container as that occupied by both gases and liquids. The inter-molecular forces between solid particles are very strong as compared to liquids ans gases. So, the model B has a particles very closely packed to each other.

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3 years ago

What are the roles of fungi? Check all that apply.

dmitriy555 [2]

Answer:

Fungi are a food source for animals and humans. This point do not apply on fungi.

Explanation:

Roles of fungi:

Penicillin and Cephalosporins are the antibiotics made by fungi. They are natural sources of antibiotics.

Fungi are eaten by animals examples are mushroom, agaricus and some animals even eat poisonous mushrooms.

Fungi destroy by releasing chemicals into the rock and they get iron this way and then deeply burrow the rocks and harming them.

Fungi acts as a decomposer to nourish the soil and improves vegetation.

Many infections are caused by fungus like ringworm infection, candida and Athlete's food are some examples.

4 0

3 years ago

What is the frequency of a red light with a wavelength of 6.98 x 10^-6

nevsk [136]

Answer:

frequency of light = $4.2\times 10^{-13}$

Explanation:

we know that relation between frequency and wavelength of light is

frequency × wavelength = speed of light.

therefore frequency = $\frac{c}{wavelength}$

= $\frac{3\times 10^{8}}{6.98\times 10^{-6}}$

= $4.2\times 10^{-13}$

4 0

3 years ago

A process that absorbs heat is a(n) _____ process.

kifflom [539]

B) Endothermic - It takes in heat and the temperature decreases, therefore becomes cooler.

8 0

3 years ago

Read 2 more answers

What is 3.35 x 10^14 Hz?

Andrews [41]

Answer:

335,000,000,000,000 Hz

Explanation:

3.35 x 10^14 is just scientific notation. This is a way to make a really big number small to write and easier to understand. The exponent on the 10 represents how many times you move the decimal to the right. If the exponent is negative you should move the decimal to the left. Each time the decimal is moved, and there is no pre-existing number, you need to add a zero.

3.35 x 10^14 is equal to

335,000,000,000,000

4 0

3 years ago