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enyata [817]
3 years ago
6

Centerville has a population of 10,000 people. The town is currently experiencing a severe drought. The city council has decided

to require all toilets to be fitted with a device that causes it to use 1.5 fewer gallons of water every time the toilet is flushed. An average person flushes a toilet eight times a day. What will be the probable outcome of the town's new policy?
Chemistry
1 answer:
svlad2 [7]3 years ago
6 0
54 toilette policy!!!!
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ch sulfide (ZnS) occurs in the zinc blende crystal structure, (a) If 254 g of ZnS contains 170 g of Zn, what is the mass ratio o
Aleonysh [2.5K]

Answer:

The mass ratio of zinc to sulfide is 85:42.

2.5559 kg of Zn are in 3.82 kg of ZnS.

Explanation:

a) Mass of zinc sulfide = 254 g

Mass of zinc in a zinc sulfide sample = 170 g

Mass of sulfide in zinc sulfide sample = x

254 g = 170 g+ x

x = 84 g

The mass ratio of zinc to sulfide:

\frac{170 g}{84 g}=\frac{85}{42}

b) Mass of zincsulfide sample = 3.83 kg

The mass ratio of zinc to sulfide is 85:42.

Let the mass of zinc and sulfide be 85x and 42x respectively:

85 x+ 42 x=3.82 kg

x =0.03007 kg

Mass of an zinc= 85x=85 × 0.03007 kg= 2.5559 kg

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