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3 years ago

How many grams of Kr are in 2.00 mol of Kr? (4)

Chemistry

2 answers:

Lina20 [59]3 years ago

8 0

Answer:

1 mole is equal to 1 moles Krypton, or 83.798 grams.

Explanation:

andrew11 [14]3 years ago

3 0

ANSWER: 168 grams of Kr
This is the rounded answer, but the full answer is 168.7 grams (I’m not sure if you need to use significant figures or not).

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What is the hydrogen ion concentration of a solution with a pH of 2.0?

aliina [53]

Answer:

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Explanation:

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3 years ago

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REY [17]

Answer:

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VashaNatasha [74]

Answer:

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Explanation:

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3 years ago

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ELEN [110]

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3 years ago

Read 2 more answers

The CRC Handbook, a large reference book of chemical and physical data, lists two isotopes of indium (). The atomic mass of 4.28

ivanzaharov [21]

Answer: The mass of second isotope of indium is 114.904 amu

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

.....(1)

Let the mass of isotope 2 of indium be 'x'

For isotope 1:

Mass of isotope 1 = 112.904 amu

Percentage abundance of isotope 1 = 4.28 %

Fractional abundance of isotope 1 = 0.0428

For isotope 2:

Mass of isotope 2 = x amu

Percentage abundance of isotope 2 = [100 - 4.28] = 95.72 %

Fractional abundance of isotope 2 = 0.9572

Average atomic mass of indium = 114.818 amu

Putting values in equation 1, we get:

$114.818=[(112.904\times 0.0428)+(x\times 0.9572)]\\\\x=114.904amu$

Hence, the mass of second isotope of indium is 114.904 amu

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3 years ago