How do you do double replacement reactions?

1 answer:

5 0

You have to switch the elements based in if they're metals/nonmetals. so nonmetals switch with each other and metals switch with each other.

AB + CD ---> AC + BD

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frutty [35]

Answer:

its the first one.

Explanation:

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Weather can have many classification, how hot how windy how cold how humid. There are however different classifications for different types of weather. Hope this helps :)

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podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu

Mass atom X = mass isotope 1 . % + mass isotope 2.% + ...

The average atomic mass of boron :

$\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu$

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3 years ago

What describes a mixture

kirill [66]

Answer:

a mixture is a material made up of two or more different substances which are physically combined.

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Which statement is true about the concentration of the reactants and products in chemical equilibrium?

bulgar [2K]

Answer:

Ans: 2

Explanation:

The concentration of reactants and the concentration of products are constant.

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