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2 years ago

How many electrons does calcian have to gain or lose to have 8 valence electrons

Chemistry

1 answer:

skelet666 [1.2K]2 years ago

8 0

Answer:

two electrons

Explanation:

Calcium atoms will lose two electrons in order to achieve the noble gas configuration of argon.

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72.0 grams of water how many miles of sodium with react with it?

Flura [38]

Answer:

$\large \boxed{\text{8.00 mol}}$

Explanation:

We will need a balanced chemical equation with masses, moles, and molar masses.

1. Gather all the information in one place:

Mᵣ: 18.02

2Na + H₂O ⟶ 2NaOH + H₂

m/g: 72.0

2. Moles of H₂O

$\text{Moles of H$_{2}$O} = \text{72.0 g H$_{2}$O} \times \dfrac{\text{1 mol H$_{2}$O}}{\text{18.02 g H$_{2}$O}} = \text{3.996 mol H$_{2}$O}$

3. Moles of Na

The molar ratio is 2 mol Na/1 mol H₂O.

$\text{Moles of Na} = \text{3.996 mol H$_{2}$O} \times \dfrac{\text{2 mol Na}}{\text{1 mol H$_{2}$O}} = \textbf{8.00 mol Na}\\\\\text{The water will react with $\large \boxed{\textbf{ 8.00 mol}}$ of Na}$

7 0

3 years ago

Sakura tested the pH of several solutions. Which substances are acidic? Check all that apply. Cola-flavored soda: 2. 6 cranberry

Archy [21]

Cola-flavored soda: 2. 6 -Acidic

cranberry juice: 2. 9 -Acidic

dish soap: 7. 3 -Basic

pickle juice: 5. 5 -Acidic

seawater: 8. 0 -Basic

lye soap: 13. 0. -Basic

pH value tells us about the acidity and basicity of any solution. pH means potential hydrogen.

The pH scale is counted from 0 to 14 in which 7 is neutral and the value of pure water.

Below 7 are all acids and the above 7 are all basic.

Thus, all acidic substances are Cola-flavored soda: 2. 6, pickle juice: 5. 5, cranberry juice: 2. 9.

Learn more about pH, here:

brainly.com/question/491373

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3 years ago

Did they scientist believe in God

Nataliya [291]

Answer:

some of them not believe in God

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3 years ago

How does newton’s third law effect bowling?

Misha Larkins [42]

Answer:

The bowling ball will remain in motion until an unbalanced force acts on the bowling ball. ... When the ball hits the pins, they push on the ball with the same amount of force in the opposite direction. This means that the ball will slow down, and the pins will fall, which is the reaction.

Explanation:

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3 years ago

Read 2 more answers

Chlorine can form a maximum of bonds

stepladder [879]

Answer: it can form a maximum of one bond

Explanation:

7 0

4 years ago