What did electrons from the ionized air do to the oil drops?

2 answers:

6 0

Answer:

The famous oil drop experiment exploits that fact that an oil drop in an electronic field will get negative charge accumulation which can be balanced and observed in order to determine the charge of an electron.

KatRina [158]3 years ago

4 0

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What is the average atomic mass of an element that has 3 isotopes with the data below?

Bezzdna [24]

Answer:

How do you calculate the average atomic mass of three isotopes?

To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together. Whenever we do mass calculations involving elements or compounds (combinations of elements), we always use average atomic masses

Explanation:

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2 years ago

13 Elements within the same main groups (1-8)

ipn [44]

Answer: Valence electrons

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3 years ago

What is the Percent yield is 4.65 got copper is produced by 1.87 percent yield is got copper is produced when 1.87 grams of alum

konstantin123 [22]

Answer:

The percent yield is 70.486%

Explanation:

$3CuSO_{4}+2Al\longrightarrow Al_{2}(SO_{4})_{3}+3Cu\\\\Weight\:of\:Al=1.87g\\54g\:of\:Al\:will\:give\:190.5g\:of\:Cu\\$

$1.87g\:of\:Al\:gives=\frac{190.5\times1.87}{54}=6.597g\:of\:Cu\\ \\Weight\:of\:Cu\:obtained=4.65g\\Theoretical\:Yield=6.597g\\Experimental\:Yield=4.65g\\Percent\:Yield=\frac{Experimental\:Yield}{Theoretical\:Yield}\times100=\frac{4.65}{6.597}\times100=70.486\%$

Hence, the percent yield is 70.486%

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4 years ago

What is the empirical formula and empirical formula mass for the following compound? C3H6O3?

babunello [35]

Answer: C3H6O3 > CH2O

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3 years ago

Which of the three minerals contain calcium carbonate? A. salt B. chalk C. talcum

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Answer:

Answer choices A, B, and C all contain a certain level (or amount, if you will) of Calcium Carbonate, but B. chalk contains the most amount out of all three.

Explanation:

I hope that this was helpful! (✿◠‿◠)

Thank you!

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2 years ago