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2 years ago

How many electrons will aluminum gain or lose in forming an ion?

Chemistry

2 answers:

Fantom [35]2 years ago

6 0

Answer:

It would tend to gain one electron and form a -1 ion. Aluminum is in the fifth column and therefore has 5 electrons in its outermost shell. It would tend to lose three electrons and form a +3 ion.

Explanation:

Mrrafil [7]2 years ago

4 0

Answer:

It would tend to gain one electron and form a -1 ion. Aluminum is in the fifth column and therefore has 5 electrons in its outermost shell. It would tend to lose three electrons and form a +3 ion.

Explanation:

<u><em>If helpful, please mark as brainliest! =)</em></u>

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Given: 4Na + O2 → 2Na2O In this chemical reaction, how many moles of Na2O will be produced if 2.90 moles of Na react completely?

crimeas [40]

Since we already have the balanced equation, we know that the ratio between $Na:Na_{2}O$ is $4:2$ respectively.

So then we can set up a proportion to find the number of moles produced when 2.90 moles of Na react completely:

$\frac{4mol_{Na}}{2mol_{Na_{2}O}} =\frac{2.90mol_{Na}}{xmol_{Na_{2}O}}$

Then we cross multiply and solve for x:

$4x=5.8$

$x=1.45$

Therefore, we know that when 2.90 moles of Na react completely, there are 1.45 moles of $Na_{2}O$ that are produced.

3 0

2 years ago

The substances in a chemical reaction that are combined or separated to form new substances are the _______.

katen-ka-za [31]

Reactant/ Reagents and Products

6 0

3 years ago

Read 2 more answers

142 amu of chlorine would contain

zhuklara [117]

Answer: There are four atoms

Explanation: mass of Cl atom is 35.45 amu

Amount of atoms n = m/M = 142 / 35.45 = 4

5 0

2 years ago

Suppose you wanted to dissolve 40.0 g NaOH in enough H2O to make 6.00 dm3 of solution

dezoksy [38]

Molarity of solution = 1.6 M

<h3>Further explanation</h3>

Given

40 g NaOH

6 L solution

Required

Steps to solve the problem of molarity

Solution

No additional information about the question.

If you want to make the solution above, then we just need to put the existing NaOH (40 g) into 6 L of water, then do the stirring (in a warm temperature above the hot plate will speed up the NaOH dissolving process)

But if you want to know the molarity of a solution, then

1. we calculate the moles of NaOH

$\tt mol=\dfrac{mass}{MW}$

MW(molecular weight) of NaOH=

Ar Na+ Ar O + Ar H

23 + 16 + 1 = 40 g/mol

so mol NaOH :

$\tt mol=\dfrac{40~g}{40~g/mol}=1~mol$

2. Molarity(M)

$\tt M=\dfrac{n}{V}\\\\M=\dfrac{1}{6}\\\\M=0.16$

5 0

2 years ago

Which of the following can be calculated from the mass of the reactants used in a chemical reaction? (Select all that apply)

Sholpan [36]

Answer:

Can you explain it more please

Explanation:

4 0

2 years ago