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Lyrx [107]
3 years ago
6

Convert 125 g to kilograms

Chemistry
2 answers:
zmey [24]3 years ago
8 0
You can solve this using simple math.

One kilogram is equal to 1000 grams. All you have to do is divide 125 grams by 1000 grams to get x / 1 = x where x = the number of kilograms.
If you do this correctly, you should have 0.125 kilograms = 125 grams.

I hope this helps and if not, good luck.
joja [24]3 years ago
3 0
Move the decimal place to the left 3 digits.
0.125
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am = \frac{\Sigma m_i  \times ab_i}{100}

where,

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  • abi: percent abundance of each isotope

For Gallium,

70.59 amu = \frac{69 amu\ x + 71 amu\ y}{100}     [1]

where "x" and "y" are the unknown abundances.

We also know that the sum of both abundances must be 100%.

x + y = 100

y = 100 - x   [2]

If we replace [2] in [1], we get

70.59 amu = \frac{69 amu\ x + 71 amu\ (100-x)}{100} \\7059 amu = -2 amu\ x + 7100amu \\x = 20.5

Then, in [2]

y = 100 - x = 100 - 20.5 = 79.5

In conclusion, Ga-69 has an abundance of 20.5% and Ga-71 has an abundance of 79.5%.

You can learn more about isotopes in: brainly.com/question/21536220?referrer=searchResults

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According to the law of multiple proportions, when water forms, the mass ratio of hydrogen to oxygen is variable.
Eddi Din [679]

Answer & Explanation:

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Answer: A, C, D

Explanation:

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An isotope is the vary of neutrons in an element, causing its atomic mass to change. While an ion is a charged atom that bonds to be stable. 
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A. making an observation.

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When scientists use one of their five sense to gather information, they are simply making an observation.

Most physical properties of matter are studied using sense of taste, of feel, sight, hearing and smell.

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learn more:

Observations brainly.com/question/5096428

#learnwithBrainly

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