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Lesechka [4]
2 years ago
11

Fish need about 5 ppm oxygen dissolved in water to survive. Will water with 5 mg oxygen per

Chemistry
1 answer:
Lelechka [254]2 years ago
3 0

5mg in liter is 5 ppm

Explanation: 1 ppm is one part per million.

1 ppm is 1 mg is one part of million from 1 kg = 1000 000 mg

1 litre water is 1. Kg.

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Let us start with the total area of the lawn. Area= width x length, ie, 21 x 20 = 420 sq. ft.   Snow flakes per square foot per minute = 1350  So Snow flakes for 420 sq.feet per minute = 420 x 1350 = 567000.   Snow flakes for 1 hour = 567000 x 60 = 34020000 (60 minutes)  Weight of 34020000 snow flakes = 34020000 x 1.60 = 54432000mg.  To convert it into kilograms, divide this number by 1000000 (1 kilogram = 1000000 milligrams)  Thus 54432000/1000000 = 54.432 kilograms or 54 kilograms and 432 grams.
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Which of the following is equal to 5,800,000,000 cm?
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Answer:

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agribusiness system

Explanation:

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Remember to balance the equations first
Semenov [28]

mol CO₂ = 9.6

mol N₂ = 4.8

mol O₂ = 0.8

mol H₂O = 8

<h3>Further explanation</h3>

Reaction

4C₃H₅O₉N₃ → 12CO₂ + 6N₂ + O₂ + 10H₂O

mol CO₂

\tt \dfrac{12}{4}\times 3.2=9.6

mol N₂

\tt \dfrac{6}{4}\times 3.2=4.8

mol O₂

\tt \dfrac{1}{4}\times 3.2=0.8

mol H₂O

\tt \dfrac{10}{4}\times 3.2=8

8 0
3 years ago
Indicate how many significant figures in the following number 1.080
Lesechka [4]

Answer:

4

Explanation

Trailing zeros in decimals count as significant figures.

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