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3 years ago

Carbon-12 and Carbon-14 are considered __________of each other.

Chemistry

2 answers:

goldenfox [79]3 years ago

7 0

Answer: The direct answer is that they are Isotopes of one another.

Explanation:

koban [17]3 years ago

7 0

Answer: isotopes

Explanation: Isotopes are atoms of the same element having the same atomic number but different atomic masses. Atomic number of an element is the number of protons contained in the nucleus of an atom. Atomic mass is the sum of the protons and neutrons in the nucleus of an atom.

The difference in the atomic masses is due to the number of neutrons in the atoms. This isotopes have the same number of protons but different number of neutrons. The phenomenon whereby atoms of the same element have the same atomic number but different mass number is called isotopy.

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What volume is occupied by 0.25 moles of nitrogen gas at 360 K and 1.50 atm

Annette [7]

It varies with container, temperature, pressure and amount of gas. But, the volume occupied by a gas at a fixed temperature and pressure remains constant which is 22.4 L for 1 mole at STP.

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4 years ago

How does the composition of the cell membrane help regulate the movement of substances into and out of the cell?

suter [353]

Answer:

Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells. The membrane also maintains the cell potential.

Explanation:

(see above)

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3 years ago

Why is a phenol more acidic than a regular alcohol? Group of answer choices

Aleks [24]

Answer:

a.Phenols have the ability to spread out the negative charge that forms.

Explanation:

This happens because of the aromatic ring the phenols have. When loosing the proton, the anion formed have different resonance isomers due to the double bonds in the aromatic ring. This resonance makes the anion more stable and prevents the reaction going backwards.

On the other hand, regular alcohol doesn't have resonace and the reaction of loosing the proton goes leftward and righward: is in equilibrium.

That equilibrium decreases the acidity of the alcohol.

3 0

4 years ago

Calculate the morality for the following 10.5 kg of Na2 SO4. 10H2O in 18.60 L

Serggg [28]

Answer:

1.75M

Explanation:

The problem deals with finding the molarity of the given compound.

The compound is:

Na₂SO₄.10H₂O

Mass of the compound = 10.5kg = 10500g

Volume of the compound = 18.6L

Molarity is the number of moles of solute in a solution;

Molarity = $\frac{number of moles }{volume}$

Number of moles = $\frac{mass}{molar mass}$

Molar mass of Na₂SO₄.10H₂O = 2(23) + 32 + 4(16) + 10[2(1) + 16]

= 322g/mol

Now;

Number of moles = $\frac{10500}{322}$ = 32.6mole

So;

Molarity = $\frac{32.6}{18.6}$ = 1.75M

5 0

3 years ago

How many moles are equal to 12.65 grams of Al2(SO4)3?

____ [38]

Answer:

0.03697 mol Al₂(SO₄)₃

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

12.65 g Al₂(SO₄)₃

Step 2: Identify Conversions

Molar Mass of Al - 26.98 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Al₂(SO₄)₃ - 2(26.98) + 3(32.07) + 12(16.00) = 342.17 g/mol

Step 3: Convert

$12.65 \ g \ Al_2(SO_4)_3(\frac{1 \ mol \ Al_2(SO_4)_3}{342.17 \ g \ Al_2(SO_4)_3} )$ = 0.03697 mol Al₂(SO₄)₃

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

We already have 4 sig figs in the final answer, so no need to round.

5 0

3 years ago

Carbon-12 and Carbon-14 are considered __________of each other. ​

Carbon-12 and Carbon-14 are considered __________of each other.