3 years ago

What is the oxidation number of each nitrogen atom (N) in calcium nitrate (Ca(NO3)2)? (3

Chemistry

1 answer:

Dmitry_Shevchenko [17]3 years ago

6 0

Yes 5a is equal to 81 for fraction equally

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If a man has a mass of 83 kilograms on Earth, what will the force of gravity on his body be on the moon? A. 135.6 N B. 318.5 N C

diamong [38]

First, we need to know what's the gravity value in the moon. it is 1.622 m/ s2

to find the force, let's recall this formula----> Force= mass x gravity

force= 83 kg x 1.622= 134.6

A is the closest choice.

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3 years ago

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The diffrent names for the diffrent ways the moon can look from earth or blank?

Gnesinka [82]

there are 8 moon phases.

They are - First quarter, waxing crescent, new, waning crescent, third quarter, Waning gibbous, full, and waxing gibbous

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muminat

It can possible be you're arteries or also you're intestines with is large and small.

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a 10.99g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition (define proportions), how many g

leonid [27]

Given :

A 10.99 g sample of NaBr contains 22.34% Na by mass.

To Find :

How many grams of sodium does a 9.77g sample of sodium bromine contain.

Solution :

By law of constant composition , in any given chemical compound, the elements always combine in the same proportion with each other.

Therefore , percentage of Na by mass in NaBr will be same for every amount .

Percentage of Na in 9.77 g NaBr is 22.34 % too .

Gram of Na = $9.77\times \dfrac{22.34}{100}=2.18\ g$ .

Hence , this is the required solution .

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What historical event of commercial interest triggered investigation in the science of steam?

Cerrena [4.2K]

Answer: Photosynthesis

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