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Zinaida [17]
3 years ago
11

Seawater is 3.5% Sodium Chloride by mass. Sea Salt can contain about 10 % water.

Chemistry
2 answers:
Mekhanik [1.2K]3 years ago
6 0

10g water is removed from every Kilogram of Commercial Sea Salt

Zielflug [23.3K]3 years ago
3 0

Answer:

900 g

Explanation:

90% of 1000 g is 900g

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3 years ago
How do you Convert 62 grams of Oxygen to moles
ioda

Answer: 1.9 moles

Explanation:

Step 1: Determine how many grams of a substance are in the problem.

  From the question; we have 62 grams of Oxygen

Step 2: With the aid of a periodic table, the atomic mass of Oxygen is 16g, but since oxygen is diatomic i.e O2, it's molecular mass would be 32g.

Step 3: Applying the mathematical expression for finding moles

            Moles = Mass/ Molar Mass

                       = 62g/ 32 g

                       =  1.9

∴ 62g of oxygen is equivalent to 1.9 moles.

4 0
3 years ago
2. Nitric oxide contains 46.66% nitrogen and 53.34% oxygen. Water contains 11.21% hydrogen and 88.79% oxygen. Ammonia contains 1
Mrrafil [7]

Answer:

The law of reciprocal proportions states that if two elements react individually with a given weight of a third element, the ratio of the masses with which they combine with the third element are either the same or a simple multiple of the ratio of the masses with which they combine with each other

The compounds formed includes;

1) Nitric oxide, NO

Nitrogen = 46.66% × 30.01 = 14

Oxygen = 53.34% × 30.01 = 16

2) Water, H₂O

Hydrogen = 11.21% × 18.01528 = 2

Oxygen = 88.79% × 18.01528 ≈ 16

3) Ammonia, NH₃

Hydrogen = 17.78% × 17.031 ≈ 3

Nitrogen = 82.22% × 17.031 ≈ 14

The ratio of nitrogen to oxygen in nitric oxide = 14:16 = 7:8

The ratio of nitrogen to hydrogen in ammonia = 14:3

The ratio in which hydrogen and oxygen combine with nitrogen = 3/16

The ratio of hydrogen and oxygen combine with each other in water = 2/16

Therefore, the ratio with which hydrogen and oxygen combine with nitrogen, is (2/3) times the ratio with which they combine with each other, which verifies the law of reciprocal proportions

Explanation:

4 0
4 years ago
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