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garri49 [273]
3 years ago
9

Should I say sorry to a boy who was tryna steal my friends backpack as a joke and I was tryna kick his hand and I kicked his nos

e so now he is crying- and I may be in the ISI now​
Chemistry
1 answer:
marissa [1.9K]3 years ago
4 0

Answer:

No bro that bro had it coming he should have known when to stop

Explanation:

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The element chlorine has two stable isotopes, chlorine-35 with a mass of 34.97 amu and chlorine-37 with a mass of 36.95 amu. Fro
sergejj [24]

<u>Answer: </u>One isotope has a percentage abundance of 75.75 % and the percentage abundance of another isotope is 24.24%.

<u>Explanation:</u>

We are given the two stable isotopes of chlorine with their respective masses. The average atomic mass of chlorine is also given.

Average atomic mass of chlorine = 35.45 amu.

Let us assume the fractional abundance of one isotope be 'x' and the fractional abundance for another isotope will be (1 - x) because the total fractional abundance is always equal to 1.

  • For Chlorine-35 isotope:

Fractional abundance = x

Mass = 34.97 amu

  • For Chlorine-37 isotope:

Fractional abundance = 1 - x

Mass = 36.95 amu

The formula for the calculation of average atomic mass is given by:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i

Putting values in above equation, we get:

35.45=34.97(x)+36.95(1-x)\\\\35.45=34.97x+36.95-36.95\\\\-1.5=-1.98x\\\\x=\frac{-1.5}{-1.98}=0.7575

1-x=1-0.7575=0.2424

Converting these two fractional abundances into percentage abundances by multiplying it with 100.

x=0.7575\times 100=75.75\%\\\\1-x=0.2424\times 100=24.24\%

Hence, one isotope has a percentage abundance of 75.75 % and the percentage abundance of another isotope is 24.24%.

7 0
3 years ago
How many grams of hydrochloric acid and required to react completely with 61.8 grams of calcium hydroxide when they produce calc
Keith_Richards [23]
2HCl+Ca (OH)2------>cacl2+2H2O
...now every 2 moles of hcl reacts with 1 mole ca (oh)2.....
2moles of hcl = 2×(36.5)=73 gm..
1 mole of ca (oh)2=40+(17×2)=74 gm..
so ... 61.8 gm of hcl need ...(61.8×73)/74= 60.964864864
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To what category of elements does an element belong if it is a poor conductor of electricity
Yuri [45]

I was wondering the same thing my dude

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Balance chemical equation Fe3O4 = Fe + CO2
m_a_m_a [10]

equation Fe3O4=Fe+CO2 is an impossible reaction

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What charge is there on a lithium ion?
gogolik [260]
Lithium is in the Alkali Metal group or 1A column. The atoms in this group form ions with a 1+ charge. Lithium ion’s charge is 1+.
3 0
3 years ago
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