CHEMISTRY MIDDLE SCHOOL

What are orbitals?A. Energy levels occupied by neutrons
B. Areas within an energy level that are occupied by electrons
C. Regions of the atom that contain protons
D. Circular paths around the nucleus

Answers

Answer 1

Answer:

Answer:

B. Areas within an energy level that are occupied by electrons

Explanation:

Its not A because there are different orbitals on each energy level.

Answer 2

Answer:

Answer:

Explanation:

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Most covalent compounds are very ______ electrolytes in solutions. A. Strong B. Weak C. Acidic D. Flammable

What molecule contains 12.17 g of carbon, 32.53 g of sulfur, and 72.19 g of chlorine

Answers

The molecule is thiophosgene or CSCl₂.

Explanation:

As the informations given, the molecule contains 12.17 grams of carbon, 32.53 g of sulfur, and 72.19 g of chlorine.

Molar mass of carbon =12.

Molar mass of sulphur =32.

Molar mass of chlorine =35.

So on an average estimation, one mole of the molecule contains one mole of carbon atoms, one mole of Sulphur atoms and two moles of chlorine atoms. Molar mass of an element is the average weight of one mole of atoms of that element which is made average according to the variations of percentage availability of isotopes of that element on earth.

So the estimated molecule is CSCl₂ or thiophosgene.

What happens as a result of an increase in the intensity of a sound wave?

Answers

The result is the sound will be louder. This is due to the high amount of energy in the sounds.

PLS HELPFill in the word that completes each sentence.

In the mitochondrion, small molecules combine with
to produce
and carbon dioxide.

This process releases a large amount of
.

Answers

i believe it’s hydrogen and HCo2

I agree with the answer above mine

1. Aqueous solutions of chromium(III) iodide and sodium hydroxide react to give a chromium(III) hydroxide precipitate and aqueous sodium iodide.2. Aqueous solutions of iron(II) sulfate and barium nitrate react to give a barium sulfate precipitate and aqueous iron(II) nitrate.

Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if there is no reaction.

Answers

1- The original equation of the reaction is :
CrI3 + NaOH → Cr(OH)3 + NaI
but this is not a balanced equation so we have to balance it :
-first, we have 3 I atoms on the left side and 1 I atom on the right side
so to makes the no.of atoms on both sides equal we put 3NaI instead of NaI
CrI3 + NaOH → Cr(OH)3 + 3NaI
- then no.of Na atoms on the left side is 1 and on the right side is 3 so, we put 3NaOH instead of NaOH
CrI3 + 3NaOH → Cr(OH)3 + 3NaI
now we have :
Cr atoms = 1 on both sides
I atoms = 3 on both sides
Na atoms = 3 on both sides
O&H atoms = 3 on both sides
So the final balanced equation of our reaction is:
CrI3(aq) + 3NaOH(aq) → Cr(OH)3(s) + 3NaI(aq)

2 - the chemical equation of the second reaction is :
FeSO4 + Ba(NO3)2 → BaSO4 + Fe(NO3)2
let's see if it is the balanced equation or not?
we have:
no of Fe atom on both sides = 1
no of (SO4) atom on both sides are equal
no of Ba atom on both sides = 1
no of (NO3) group on both sides= 2
so this is our balanced equation, so the final equation for this reaction is:
FeSO4(aq) + Ba(NO3)2(aq) →BaSO4(s) + Fe(NO3)2(aq)

How to clams get calcium?

Answers

They eat the nutrients from the seaweed in the water.

They began to filter the water around them for calcium.

This is also how they produce the shells , They would collect calcium from the water around and slowly "release loose glue" to push up to the front of the outer layer and it drys to be harder.

I really hope that this helps you out a lot.

Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?A.His results gave people a picture of what atoms look like for the first time.
B.His results gave the first clues that atoms could be created and destroyed.
C.His results gave the first experimental evidence that matter is made up of atoms.
D.His results gave the first evidence that atoms were made up of smaller particles.