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2 years ago

6) What is the electron configuration of an atom in its ground state with a

Chemistry

1 answer:

Alla [95]2 years ago

3 0

Answer: B

2s2 = 2 valence e-

2p5 = 5 valence e-

This will be 7 valence electrons

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Can someone help me?

Brilliant_brown [7]

Answer:

no, and next time take it right

Explanation:

5 0

3 years ago

You are at home in your air conditioned garage. You are planning a family road trip from New York to Florida. You are lnfating t

Ksenya-84 [330]

Hello!

According to the Charles' Law, the volume of a gas is proportional to temperature when pressure is constant. When going from New York to Florida, if the pressure is left constant the volume of the tires will increase.

The final volume of the tires can be calculated from the following equation, derived from Charles' Law:

$V2= \frac{V1}{T1}*T2=\frac{10 L}{10degC}*32degC=32 L$

Have a nice day!

3 0

3 years ago

The solubility of calcium sulfate at 30°c is 0.209 g/100 ml solution. calculate its ksp.

inessss [21]

Answer is: Ksp for calcium sulfate is 2.36·10⁻⁴.
Balanced chemical reaction (dissociation):
CaSO₄(s) → Ba²⁺(aq) + SO₄²⁻(aq).
m(CaSO₄) = 0.209 g.
n(CaSO₄) = m(CaSO₄) ÷ M(CaSO₄).
n(CaSO₄) = 0.209 g ÷ 136.14 g/mol.
n(CaSO₄) = 0.00153 mol.
s(CaSO₄) = n(CaSO₄) ÷ V(CaSO₄).
s(CaSO₄) = 0.00153 mol ÷ 0.1 L = 0.0153 M.
Ksp = [Ca²⁺] · [SO₄²⁻].
[Ca²⁺] = [SO₄²⁻] = s(CaSO₄).
Ksp = (0.0153 M)² = 2.36·10⁻⁴.

8 0

3 years ago

Compound A is an organic compound which contains Carbon, Hydrogen and Oxygen. When 0.240g of the vapour of A is slowly passed ov

vesna_86 [32]

(a) In this section, give your answers to three decimal places.

(i)

Calculate the mass of carbon present in 0.352 g of CO

Use this value to calculate the amount, in moles, of carbon atoms present in 0.240 g

(ii)

Calculate the mass of hydrogen present in 0.144 g of H

Use this value to calculate the amount, in moles, of hydrogen atoms present in 0.240 g

(iii)

Use your answers to calculate the mass of oxygen present in 0.240 g of

Use this value to calculate the amount, in moles, of oxygen atoms present in 0.240 g

(b)

Use your answers to

(a)

to calculate the empirical formula of

thank you

hope it helpsss

4 0

3 years ago

The charge on a magnesium ion is +2. When it formed an ionic compound with another element, it lost 2... what?

Naya [18.7K]

Answer: electrons

Explanation: Electrons have a charge of -1 each. If two left, the remaining atom would have a positive +2 change.

6 0

3 years ago