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Doss [256]
3 years ago
14

A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on t

he technique used?
A: It was a pure substance
B: It was a compound
C: It was a heterogeneous mixture
D: It was a homogeneous mixture
Chemistry
2 answers:
masya89 [10]3 years ago
6 0

Answer:

B: It was a compound

Explanation:

If a chemical reaction was used to separate a sample into its components,  then it was a compound. For example, water (H2O, a compound) can be separated by electrolysis into oxygen and hydrogen (its components). the chemical reaction is:

2 H2O -> O2 + 2 H2

Heterogeneous and homogeneous mixtures can be separated by physical ways. Pure substance can be either a compound or an element, so this option is not specific enough to be the correct answer.

Dvinal [7]3 years ago
3 0
C, a compound because it means it was made up of more than one element but, still able to be separated from the other compound(s)
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<em>Answer:</em>

  • Some beverages or food that contain no sweet taste or less sweet taste, it does not mean that they have negative test for glucose.

<em>Explanations:</em>

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Elements whose names end with âium are usually metals; sodium is one example. Identify a nonmetal whose name also ends with âium
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8 0
3 years ago
find the volume of an item using a scale and waterA crown made of alloy of gold and silver has a volume of 60cm3and mass of 1050
KiRa [710]

Answer:

The mass of gold in crown is 960.61 g.And  the volume of gold is 49.77 cm^3.

Explanation:

Density is defined as mass of the substance present in unit volume of the substance.

Mass of gold in an alloy of crown= m

Mass of silver in an alloy of crown = M

Volume  gold in an alloy of crown= v

Volume of silver in an alloy of crown = V

Density of gold = 19.3 g/cm^3

Density of silver = 10.5 g/cm^3

Volume of the crown = 60 cm^3

60 cm^3=v+V

60 cm^3=\frac{m}{19.3 g/cm^3}+\frac{M}{10.5 g/cm^3}..(1)

Mass of eh crown = 1050 g

1050g =m+M..(2)

Solving equation (1) and (2):

m = 960.61 g

M = 89.39 g

Volume of the gold = v = \frac{960.61 g}{19.3 g/cm^3}=49.77 cm^3

Volume of silver = V = 60 cm^3-v=60 cm63-49.77 cm63=10.23 cm^3

The mass of gold in crown is 960.61 g.And  the volume of gold is 49.77 cm^3.

4 0
3 years ago
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