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Diano4ka-milaya [45]
3 years ago
12

Help! please and thank youu

Chemistry
2 answers:
Alja [10]3 years ago
7 0
The answer is B! (4.152x10^3) hope this helped!! Have a good day :)
Evgesh-ka [11]3 years ago
6 0

Answer:

B) 4.152 x 10^5

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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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:

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3 years ago
In the past when a commodity has been identified as a new source of biofuel in addition to its usual food uses, that commodity h
stiks02 [169]
I think that the answers is true
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2 years ago
Wood with a mass of 3.0 grams was burned in an open dish. The ashes weighed 1.2 grams.
mr_godi [17]

The rest of the wood was burned into gases of equivalent weight.

<u>Explanation</u>:

The rest of the wood was burned into gases of equivalent weight.

  • When wood is burnt in the open air, with the help of oxygen and heat, it is transformed into carbon dioxide, water vapor, and ashes.
  • Ignition and combustion of wood mainly depend on pyrolysis which is also known as thermal combustion.
  • The loss in weight of the ashes is due to the fact that gases and water vapor are also formed due to the combustion of wood.

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3 years ago
The table below lists the properties of a metallic element.
Misha Larkins [42]

Answer:

Group 12

Explanation:

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3 years ago
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Mercury has a density of 13.56 g/ml. What is the volume in L of 52 kg of mercury?
sweet [91]

Hello!

Given the density of mercury being 13.57 g/mL, and the mass of 52 kilograms, we need to find the volume.

To find the volume, we need to divide mass by density (V = m/d).

Notice that you are given 52 kilograms, but not grams. To convert kilograms to grams, you need to multiply it by 1000.

52 x 1000 = 52000 grams

With the correct measurements, we can find the volume.

V = 52000 grams / 13.56 grams/milliliter

V ≈ 3834.80826

Therefore, the volume of the mercury is about 3,834.81 mL.

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