Chemistry: How many molecules of o2 are required to react with 3.00 moles p4? p4+5o2⟶2p2o5

How many molecules of o2 are required to react with

Ответ:

jacky852

11.03.2022

Chemistry

$9,03.10x^{24}$ molecules of O_2

Explanation:

We have the following balanced equation

$P_4+5O_2 \longrightarrow 2P_2O_5$

According to the stoichiometric coefficients of the reagents for each mole of P_4 , 5 moles of O_2 are needed,

We apply a simple three rule to find out how many moles of O2 are required for 3 moles of P4 to react

$1 mol P_4 \longrightarrow 5 mol O_2\\3 mol P_4\longrightarrow x \\x=\frac{(3molP_4)(5molO_2)}{1molP_4} \\x= 15 molO_2$

Now we know that we need 15 moles of O_2 so that 3 moles of P_4 reactions

Remember that 1 mole (of any element or substance) is equal $6,02.10^{23}$ molecules

To find out how many molecules of O2 are required we apply a simple rule of three

$1 mol O_2 \longrightarrow6,02.10^{23}molecules \\15 molO_2 \longrightarrow x \\x=\frac{(15molO_2)(6,02.10^{23}molecules)}{1molO_2} \\x=9,03.10^{24} molecules$

To react 3 moles of P_4 , $9,03.10^{24}$ molecules of O_2 are required

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Ответ:

raul2372

23.08.2021

Chemistry

I solved all of them instead of B.

This is the answer for Question D.

D) Density depends on how much the atoms are packed together.

When a substance has a higher density than other substance it is most likely to float to the top.

For example, put oil in water and it will float because oil is lighter than water therefore, lower density than water.

Density quiz please help i don’t know anything ka

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How many molecules of o2 are required to react with 3.00 moles p4?
p4+5o2⟶2p2o5

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