An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown Substance X: mass sample of E₁ mass of E₂ 1 2 3 4 7.9 g 18.1 g 9.5 g 21.5 g 9.1 g 20.9 g 4.9 g 11.2 g Using this information, answer the questions in the table below. It's known that X contains no elements other than E, and E2. Is X a pure substance or a mixture? If you don't have enough information to decide, choose can't decide. If you said X is a pure substance, calculate the mass of Element E, the analytical chemist would find in a new 10.0 g sample of X. Round your answer to 2 significant digits. O pure substance O mixture O (can't decide) g X S

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An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown Substance X:
mass mass
sample of E₁ of E₂
7.9 g
18.1 g
9.5 g
21.5 g
9.1 g
20.9 g
4.9 g 11.2 g
Using this information, answer the questions in the table below.
1
2
3
4
It's known that X contains no elements other than E₁ and E2.
Is X a pure substance or a mixture?
If you don't have enough information to decide, choose can't decide.
If you said X is a pure substance, calculate the mass of Element E₁ the
analytical chemist would find in a new 10.0 g sample of X.
Round your answer to 2 significant digits.
pure substance
mixture
(can't decide)
| g
x10
X
Ś
alo
18
Ar
Transcribed Image Text:An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown Substance X: mass mass sample of E₁ of E₂ 7.9 g 18.1 g 9.5 g 21.5 g 9.1 g 20.9 g 4.9 g 11.2 g Using this information, answer the questions in the table below. 1 2 3 4 It's known that X contains no elements other than E₁ and E2. Is X a pure substance or a mixture? If you don't have enough information to decide, choose can't decide. If you said X is a pure substance, calculate the mass of Element E₁ the analytical chemist would find in a new 10.0 g sample of X. Round your answer to 2 significant digits. pure substance mixture (can't decide) | g x10 X Ś alo 18 Ar
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