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2 years ago

Which is the FALSE statement about C-14?

Chemistry

2 answers:

slega [8]2 years ago

7 0

The answer is: A

C-14 is not stable and this is the reason why it goes through radioactive decay.

RSB [31]2 years ago

5 0

Answer : The false statement is, (A) It is a stable isotope.

Explanation:

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Carbon has three isotopes which are carbon-12, carbon-13 and carbon-14.

Carbon-14 is an unstable isotope which is radioactive isotope and it is present in all the living things.

Carbon-14 is used to calculate the age of of remains.

Hence, the false statement is, (A) It is a stable isotope.

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3 years ago

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2 years ago

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A 10.00 g sample of a soluble barium salt is treated with an excess of sodium sulfate to precipitate 11.21 g BaSO4 (M- 233.4). W

aliina [53]

Answer:

The salt is barium chloride.

Explanation:

$BaX_2++Na_2SO_4\rightarrow BaSO_4+2NaX$

Moles of barium sulfate = $\frac{11.21 g}{233.38 g/mol}=0.0480 mol$

According to reaction, 1 mol of barium sulfate is produced from 1 mol of $BaX_2$ .

Then 0.0480 moles will be produced from:

$\frac{1}{1}\times 0.0480 mol=0.0480 mol$ of $BaX_2$ .

Mass of $BaX_2$ used = 10.00 g

Moles of $BaX_2$ =\frac{10.00 g}{\text{Molar mass}}[/tex]

$0.0480 mol=\frac{10.00}{\text{Molar mass}}$

Molar mass of $BaX_2$ = 208.33 g/mol

The nearest answer to our answer is $BaCl_2=208.2 g/mol$ .

The correct answer barium chloride with molar mass of 208.2 g/mol.

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2 years ago

Which element is most reactive sodium,magnesium, or aluminum and why?

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Magnesium would be more reactive.

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3 years ago

What is the coefficient in this chemical formula? 3C6H12O6

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Answer:

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Explanation:

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2 years ago

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