Sixteen grams of oxygen contain avogadro’s number of atoms, with each atom having eight protons and eight electrons. how many coulombs, q, of positive charge are there in the protons of 1.0kg of oxygen?
(a) 4.8 x 10^7 c
(b) 5.2 x 10^15 c
(c) 5.4 x 10^-5 c
(d) 1.7 x 10^-9 c
(e) 2.0 x 10^6 c

The correct answer is A

Explanation:

The electric charge of a proton is 1,6×10^-19 C. If you have eight protons in each atom, and you have 6.02×10^23 (Avogadro's number) atoms 16 grams of oxygen, in 1 kg you will have:

16 grams 8 protons x 6.02×10^23 = 4,81×10^24 protons

1000 grams (1000 x 4,81×10^24)/16 = 3,01×10^26 protons.

3,01×10^26  protons x 1,6×10^-19C = 4,8×10^7 C

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

wanahton purified a portion of water with 900 grams of contaminants. each hour, a third of the contaminants was filtered out.

let g(n) be the amount of contaminants (in grams) that remained by the beginning of the nth hour. g is a sequence, what kind of sequence is it, arithmetic or geometric? then, write an explicit formula for the sequence, g(n)=

explanation:

3 hours because it is a decent distance.