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Rashid [163]
2 years ago
15

What element has the same number valence electrons as strontium?​

Chemistry
1 answer:
Arturiano [62]2 years ago
4 0

Answer:

Beryllium

Explanation:

They are in the same group

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Write molecular, complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following s
Stells [14]
<span>Ca(NO3)2 (aq) + Na2SO4 (aq) --> CaSO4 (s) + 2NaNO3 (aq) Ca2+ (aq) + 2NO3- (aq) + 2 Na+ (aq) + SO4 (aq) --> CaSO4 (s) + 2Na+ (aq) + 2NO3- (aq) cancel out spectator ions Ca2+ (aq) + SO4 (aq) ---> CaSO4 (s hope it helps</span>
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2 years ago
Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO?
Ber [7]

Answer: C. The Number of Molecules

Explanation: I just took the test, it's correct.

6 0
3 years ago
How an atom of an element reacts chemically is based on its what?
iragen [17]
How an atom reacts chemically depends on how willing it is to share electrons with others.

It’s electrons
8 0
2 years ago
An ore is to be analyzed for its iron content by an oxidation-reduction titration with permanganate ion. A 4.230 g sample of the
Leya [2.2K]

Answer:

See explanation

Explanation:

The balanced redox reaction equation is;

8H+ + MnO4^- + 5Fe2+ ---------> Mn2+ + 5Fe3+ + 4H2O

Amount of KMnO4 reacted = 31.60/1000 * 0.05120 = 1.62 * 10^-3 moles

From the reaction equation;

1 mole of MnO4^- reacted with 5 moles of Fe2+

1.62 * 10^-3 moles will react with 1.62 * 10^-3 moles * 5/1 = 8.1 * 10^-3 moles

Mass of Fe2+ reacted = 8.1 * 10^-3 moles  *  56 g/mol

Mass of Fe2+ reacted = 0.45 g

Amount of iron in the sample =  0.45 g

Percentage of iron in the sample;

0.45 g/4.230 g  * 100 = 10.6 %

8 0
2 years ago
Substances that are considered acidic are also called alkaline, true or false
V125BC [204]
False
Alkaline is something we use everyday
Acid is something sour eg lemons
7 0
3 years ago
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