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2 years ago

The complete orbital notation diagram of an atom is shown.

Chemistry

1 answer:

Leno4ka [110]2 years ago

5 0

Answer:

atoms are little things things thinbs timmy amrfiv

Explanation:

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Solid solution of a metal or nonmetal dissolved in a metal

guajiro [1.7K]

An alloy is the solid solution of a metal or non-metal dissolved in a metal.

3 0

4 years ago

Calculate the number of moles in the following: 2.8 X 10^24 atoms of Cl2

vova2212 [387]

Answer:

<h3>The answer is 4.65 moles</h3>

Explanation:

To find the number of moles given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 2.8 × 10²⁴ atoms of Cl2

So we have

$n = \frac{2.8 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 4.65116279069...$

We have the final answer as

<h3>4.65 moles</h3>

Hope this helps you

7 0

3 years ago

What is the molarity of a solution prepared by diluting 250 mL of a 40% H2SO4 solution to 1 Liter? The density of the stock solu

kiruha [24]

Answer:

1.195 M.

Explanation:

We can calculate the concentration of the stock solution using the relation:

<em>M = (10Pd)/(molar mass).</em>

Where, M is the molarity of H₂SO₄.

P is the percent of H₂SO₄ (P = 40%).

d is the density of H₂SO₄ (d = 1.17 g/mL).

molar mass of H₂SO₄ = 98 g/mol.

∴ M of stock H₂SO₄ = (10Pd)/(molar mass) = (10)(40%)(1.17 g/mL) / (98 g/mol) = 4.78 M.

We have the role that the no. of millimoles of a solution before dilution is equal to the no. of millimoles after dilution.

<em>∴ (MV) before dilution = (MV) after dilution</em>

M before dilution = 4.78 M, V before dilution = 250 mL.

M after dilution = ??? M, V after dilution = 1.0 L = 1000 mL.

∴ M after dilution = (MV) before dilution/(V after dilution) = (4.78 M)(250 mL)/(1000 mL) = 1.195 M.

3 0

3 years ago

Is matter continuous and therefore has no finer structure or is it discontinuous and thus made or tiny particles

Marta_Voda [28]

Matter is discontinuous, and it is made of tiny particles called atoms

Explanation:

Matter is not a continuous structure, but it consists of tiny particles called atoms.

An atom consists of three types of particles:

Proton: the proton is in the nucleus of the atom. it has a positive electric charge of $+1.6\cdot 10^{-19}C$ (also called fundamental charge). Its mass is $1.67\cdot 10^{-27}kg$ .

Neutron: the neutron is also in the nucleus of the atom, but it has no electric charge. Its mass is similar to the mass of the proton (slightly heavier). Neutrons and protons are held together in the nucleus through the strong nuclear force.

Electron: electrons are found in a "cloud" outside the nucleus. Electron has negative electric charge equal to $-1.6\cdot 10^{-19}C$ . Its mass is much approximately 1800 times smaller than that of the proton, so it is considered as negligible.

Learn more about atoms and matter:

brainly.com/question/2757829

#LearnwithBrainly

7 0

3 years ago

What is the name for the ionic compound (NH4)2C2O4

ddd [48]

Ammonium Oxalate (NH4) 2c204 is the formula number and has a mass of 124.0959

6 0

3 years ago