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sesenic [268]
3 years ago
12

A compound consisting of only phosphorous and oxygen atoms is 43.64 % phosphorus by mass.The molecular mass/formula weight of th

e compound is 283.88 amu. How many phosphorous atoms ar in a molecule of this compound? Please show all calc involved.
Physics
1 answer:
DanielleElmas [232]3 years ago
6 0
First, we calculate the mass of Phosphorous present:
283.88 x 0.4364
= 123.88 amu
Atomic mass of P is 31 amu

moles of P = mass / Ar
= 123.88 / 31
= 4.0 moles

We know that one mole of substance has 6.02 x 10²³ particles
Atoms of P = 4 x 6.02 x 10²³ 
= 2.41 x 10²⁴ atoms
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guajiro [1.7K]

Answer: The net force acting on the car 1,299.3 N.

Explanation:

Mass of the car = 710 kg

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time taken b y car = 12.6 sec

v-u=at

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a = 1.83 m/s^2

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Force=1,299.3 N

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Firlakuza [10]
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3 years ago
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BARSIC [14]

Answer:

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