How to balance chemical equations

Answers

Answer 1

Answer: To balance a chemical equation, you want the same amount of elements to equal the same on both sides.

Step1. Write equation out
[CH4 + Cl2 ---> CCl4 + HCl]
C:1; H:4; Cl:2 C:1; H:1; CL:5 /// Cl = 5 since 4Cl + 1Cl

The Carbon element is balanced, but Hydrogen isn't.
So to balance it we will add a coefficient behind HCl, so now

[CH4 + Cl2 ------> CCl4 + 4HCL]
C:1; H:4; Cl:2 C:1; H:4; CL:8 ///// Carbon and hydrogen are balanced, but now Chlorine is not. Now we balance that element by addind a coefficiant behind CL2////

[CH4 + 4Cl2 -----> CCl4 + 4HCl]
C:1; H:4; Cl:8 C:1; H:4; CL:8 ///// So now that we added a 4*Cl2, it equals to Cl:8. So now what most people want to see is if every element is at its lowest balance, so we see if we can any coefficient lower. Just like simplifying if possible.

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How do you know the wave is a mechanical wave?

Answers

If it's mechanical then it moves through matter

This reaction is an explosive reaction of a strong acid combining with a strong base.H2SO4 + 2NaOH → 2H2O + Na2SO4

Which compounds are the reactants and which are the products?

A.
reactants: H2SO4 + 2NaOH
products: 2H2O + Na2SO4

B.
reactants: 2NaOH + Na2SO4
products: H2SO4 + 2H2O

C.
reactants: 2H2O + Na2SO4
products: H2SO4 + 2NaOH

D.
reactants: H2SO4 + 2H2O
products: 2NaOH + Na2SO4

Answers

A) reactants: H2SO4 + 2NaOH and products: 2H2O + Na2SO4
The reactants are found on the left side of the equation, before the arrow.
The products are found on the right side of the equation, after the arrow.

Answer:

A. Reactants: H2SO4 + 2NaOH

products: 2H2O + Na2SO4

Explanation:

What are four methods that can be used to separate mixtures?

Answers

Distillation, chromatography, filtration, crystallization

Which of the following measures the radiation given off by atoms per second?

Answers

The answer is curie.

the answer is curie

curie- a unit of radiation equal 3.7x10^10 disintegratons persecond

What is the key difference between a liquid and a gas?

Answers

A liquid can be frozen or evaporated. Gas is already evaporated and cannot be turned to a liquid or solid.

Gas molecules vibrate and bounce off of each other from time to time. Liquid molecules also vibrate, but they're so close together that they slide around each other as opposed to bouncing off of each other.

If poured into a flask, a liquid takes on the shape of the flask, but it does not expand. Gas will take on both the shape and the volume of the flask as it expands to fill the entire vessel. Gas is also compressible, while liquid is only compressible to an extent. The compressibility of gas occurs because it is more vulnerable to changes in temperature and pressure.

Liquids also display surface tension, while gases do not. Surface tension happens since the molecules of water on the surface of a body of water are not surrounded by other molecules on all sides and cohere more strongly to the molecules around them, creating a film on top of the water.

Explain why the number of protons in an atom must always equal the number of electrons.

Answers

Usually within an atom, the protons and electrons are equal to make the atom have a neutral charge.

However, there are cases in which the protons and electrons are different, such as Cations and Anions. Cations end up having a positive charge (less electrons than protons), and Anions end up having a negative charge (more electrons than protons).

I hope this helps!

For every negative theres a positive and for every positive there is a negative

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