Which statements correctly describe the formula or name of a compound? Select all that apply.

Physics

2 answers:

PtichkaEL [24]3 years ago

8 0

Answer:

The formula of nitrogen trifluoride is NF 3

The formula of ammonia is NH3

The formula of magnesium hydroxide is Mg(OH)2

Explanation:

The formula of a compound refers to the correct representation of the compound using appropriate chemical symbols.

The formula of a compound is derived from the symbols of its constituent elements. The formula of the compound must correctly show the number of atoms of each element in one formula unit of the compound.

In the answer section, the correct names or formulas of some compounds have been shown

liraira [26]3 years ago

8 0

Answer:

A. The formula of nitrogen trifluoride is NF3.

B. The formula of ammonia is NH3.

D. The formula of calcium chloride is CaCI2.

H. The formula of magnesium hydroxide is Mg(OH)2.

Explanation:

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a) 35.44 mm

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Explanation:

u = Object distance = 3.6 m

v = Image distance

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a) Lens Equation

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{f}-\frac{1}{u}=\frac{1}{v}\\\Rightarrow \frac{1}{v}=\frac{1}{35}-\frac{1}{3600}\\\Rightarrow \frac{1}{v}=\frac{713}{25200} \\\Rightarrow v=\frac{25200}{713}=35.34\ mm$