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3 years ago

How many molecules of HCI would react with 2 moles of AI?

Chemistry

2 answers:

laila [671]3 years ago

7 0

Answer:

A:6.02+3H2

Explanation:

trasher [3.6K]3 years ago

5 0

Answer:

It is D. 1.806 x 1024

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The postulate of Dalton's atomic theory that atom is indivisible particle and can be subdivided into smaller particles was later changed because atom can be divided into neutrons, protons and electrons. It was changed because after later finding out that the atom can be divided, the theory was changed to the correct finalized theory.

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Problem PageQuestion

mixer [17]

1) The mass of 1 mole of virus is $5.4\cdot 10^6 kg$

2) There are 5.6 moles of viruses in an oil tanker

Explanation:

One mole of a substance is the amount of that substance containing a number of particles equal to the Avogadro number:

$N_A = 6.022\cdot 10^{23}$

This means that 1 mole of this virus should contain a number of virus particles equal to $N_A$ .

We know that the mass of 1 virus particle is

$m=9.0\cdot 10^{-12} mg = 9.0\cdot 10^{-18} kg$

Therefore, the mass of 1 moles of viruses is equal to the mass of a single virus particle multiplied by the number of virus particles in one mole, $N_A$ :

$M=mN_A = (9.0\cdot 10^{-18})(6.022\cdot 10^{-23})=5.4\cdot 10^6 kg$

In this problem, we have that the mass of the oil tanker is

$M_o = 3.0\cdot 10^7 kg$

We also know that the mass of one mole of virus is

$M=5.4\cdot 10^6 kg$

Therefore, we can find how many moles of viruses have a mass equal to the mass of the oil tanker by dividing the mass of the oil tanker by the mass of 1 mole of virus particles.

Mathematically, this is done by the following operation:

$N=\frac{M_O}{M}=\frac{3.0\cdot 10^7 kg}{5.4\cdot 10^6 kg}=5.6$