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Greeley [361]
3 years ago
8

The number of neutrons in an atom can be found by subtracting the atomic number from the what?

Chemistry
2 answers:
dusya [7]3 years ago
5 0

Answer:

mass number

Explanation:

Svetradugi [14.3K]3 years ago
3 0

Answer:

This approximation of mass can be used to easily calculate how many neutrons an element has by simply subtracting the number of protons from the mass number. Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.

Explanation:

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A first order reaction B=C has a half life of
Lostsunrise [7]

Answer:

90.46 well that's how I got the answer from my calculations

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Which element has a higher first ionization energy than chlorine (Cl)?
4vir4ik [10]

Answer:

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Explanation:

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6 0
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Read 2 more answers
There are three naturally occurring isotopes of the hypothetical element hilarium 45Hi, 46Hi, and 48Hi. The percentages of these
den301095 [7]

Answer:

46.761g/mol

Explanation:

Given parameters:

Element = Hilarium , Hi

Isotopes: Hi- 45, Hi-46 and Hi- 48

Natural abundance of Hi-45 = 18.3%

                                     Hi-46 = 34.5%

                                     Hi-48 = 47.2%

Unknown:

Atomic weight of naturally occurring Hilarium = ?

Solution:

Isotopes have been studied extensively by mass spectrometry. The method is used to determine the proportion/percentage/fraction by which each of the isotopes of an element occurs in nature. The proportion is called geonormal abundance. From this we can calculate the atomic weight of an element.

 We can use the expression below to find this value:

       Atomic weight = m₄₅α₄₅ + m₄₆α₄₆ + m₄₈α₄₈

    m is the atomic mass of each isotope and α is the abundance

Atomic weight = (45 x \frac{18.3}{100} ) + (46 x  \frac{34.5}{100} ) + (48 x  \frac{47.2}{100})

Atomic weight of Hi = 8.235 + 15.870 +  22.656 = 46.761g/mol

6 0
3 years ago
Help me pretty please
almond37 [142]

Answer:

I think it is D

Explanation:

6 0
3 years ago
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