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3 years ago

How do you know when a phase change happens?

Chemistry

1 answer:

VladimirAG [237]3 years ago

4 0

Answer:

phase for what?

Explanation:

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Any time an atom transfers or shares an electron a is formed

polet [3.4K]

Anytime an atom shares or transfers electrons a bond is formed, sharing= covalent and transfer= ionic

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3 years ago

Suppose you have 100 grams of a radioisotope with a half-life of 100 years. How much of the isotope will you have after 200 year

Ulleksa [173]

Amount Remaining Years #half lives
100g 0 0
50 g 100 1
25g 200 2

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3 years ago

Read 2 more answers

In the following net ionic equation, identify each reactant as either a Bronsted-Lowry acid or a Bronsted-Lowry base. HCN(aq) H2

vfiekz [6]

Answer:

Explanation:

The definition of acids and bases by Arrhenius Theory was modified and extended by Bronsted-Lowry.

Bronsted-Lowry defined acid as a molecule or ion which donates a proton while a base is a molecule or ions that accepts the proton. This definition can be extended to include acid -base titrations in non-aqueous solutions.

In this theory, the reaction of an acid with a base constitutes a transfer of a proton from the acid to the base.

From the given information:

$\mathsf{HCN _{(aq)} + H_2O_{(l)} \to CN^{-}_{(aq)} + H_3O_{(aq)}}$

From above:

We will see that HCN releases an H⁺ ion, thus it is a Bronsted-Lowry acid

$H_2O$ accepts the H⁺ ion ,thus it is a Bronsted-Lowry base.

The formula of the reactant that acts as a proton donor is HCN

The formula of the reactant that acts as a proton acceptor is H2O

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3 years ago

Explain using the particles theory what happens when steam in the bathroom hits a cold surface such as a mirror

Aleks04 [339]

The fog in the mirror is the condensation of water vapor as it touches a colder surface. When you are running cold water you just cool down everything around it. Now the vapor coming from the hot shower will mostly condense right there and will not reach the mirror.

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3 years ago

What will the sun become when it dies

Nina [5.8K]

Answer:

It will become a red giant

Explanation:

When the sun runs out of its hydrogen fuel and the hydrogen atoms are combined together to make helium atoms, it expands into a red giant, which is made up of helium atoms and gases.

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2 years ago