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enyata [817]
3 years ago
13

Which statement is true?

Chemistry
1 answer:
LenaWriter [7]3 years ago
3 0
I think the last one but I’m not sure
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What is one example of a molecule that is not a compound?
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Br2 or O2 or N2 or H2 or F2 or I2 etc.
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2 years ago
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What is the empirical formula for a compound that is 29.44\% calcium, 23.55% sulfur, and 47.01% oxygen? This compound is a commo
PSYCHO15rus [73]

Answer:

Empirical formula is CaSO₄.

Explanation:

Given data:

Percentage of calcium =29.44%

Percentage of sulfur = 23.55%

Percentage of oxygen = 47.01%

Empirical formula = ?

Solution:

Number of gram atoms of Ca = 29.44 / 40 = 0.74

Number of gram atoms of S = 23.55 / 32 = 0.74

Number of gram atoms of O = 47.01 / 16 = 3

Atomic ratio:

            Ca                      :        S                :         O

           0.74/0.74           :     0.74/0.74      :       3/0.74

               1                     :          1              :          4

Ca : S : O = 1 : 1 : 4

Empirical formula is CaSO₄.

3 0
3 years ago
Please I need this help me​
BaLLatris [955]

Answer:

first of all is that really chemistry

3 0
3 years ago
what mass of grams of hydrogen sulfide will be required to participate 15 g of copper sulphide from a copper (ii) traoxosulphate
cestrela7 [59]
Characteristics of a Precipitate:
A precipitate is characterized by the following properties:

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Settled down at the bottom of the reaction pot.
Insoluble in the corresponding solvent.
7 0
2 years ago
Use the drop-down menus to label each of the following changes P for physical change and C for the chemical change. The substanc
dlinn [17]

Answer:

Chemical, Physical, Chemical, Chemical, Physical!!

Explanation:

I just did it correctly.

6 0
2 years ago
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