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worty [1.4K]
3 years ago
9

NEED HELP ASAP PLEASE

Chemistry
2 answers:
My name is Ann [436]3 years ago
7 0
A. Mg and Ca

They have similar reactive properties; they’re both Alkaline Earth metals.
scoray [572]3 years ago
4 0
A.

Magnesium and calcium are both in the same group and will bond ionically with sulfur.
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Aluminum flouride+ sulfuric acid=
Alexxx [7]

you get hydrofluoric acid

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3 years ago
Which description of salt is a chemical property? (2 points)
vlada-n [284]
С. product of mixing acids and bases.
8 0
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Carbon atoms can form single, double, or triple bonds because they have four valence electrons.
Anni [7]

Answer:

The answer to your question is true.

Explanation:

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single bond  =    C - C

double bonds =    C = C

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3 0
3 years ago
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What is the percent by mass of oxygen in Ca(OH)2 ?
Leya [2.2K]

Answer:

The answer to your question is Percent by mass = 43.2

Explanation:

Data

Ca(OH)₂

Percent by mass of Oxygen = ?

Process

1.- Calculate the molecular mass of Ca(OH)₂

    Ca(OH)₂ = (40 x 1) + (16 x 2) + (2 x 1)

                   = 40 + 32 + 2

                   = 74 g

2.- Calculate the mass of Oxygen = (16 x 2)

                                                        = 32 g

3.- Calculate the percent by mass

      Percent by mass = (mass of oxygen/mass of Ca(OH)₂) x 100

      Percent by mass = (32/74) x 100

      Percent by mass = 43.2

7 0
3 years ago
1. Which statement describes the charge and location of an electron in an atom? A) An electron has a positive charge and is loca
damaskus [11]

Answer: option c an electron has a negative charge and is located outside the nucleus revolving in circular path

7 0
3 years ago
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