Chemistry High School

im struggling and dont want to fail

Answers

Answer 1

Answer: Hey I am sure you will do great just try your best

Explanation:

Related Questions

Nitrous acid is classified as an Arrhenius acid because HNO2 contains
1. OH-ions
2. 02-ions
3. NO2-ions
4. H+ ions

Answers

An Arrhenius acid is a molecule that when dissolved in water will donate an H+ in solution. ... Common examples of Arrhenius acids include: Hydrochloric Acid – HCl. Nitric Acid – HNO3.

4) H+ions is your answer , good morning , have a great day ahead.

8. Of what importance is a smoker to a person keeping bees?

Answers

Answer:

they help to calm the bees when the person keeping the bees inspects there hives.

what is the difference between isotopes and allotrope not more than three line

Answers

Answer:

An allotrope is one way that atoms can be arranged in a solid. An isotope is one way that protons and neutrons can form the same atomic element.

Where do we get our energy from ?

Answers

Answer:

energy

Explanation:

from food which we eat

In an exothermic the change in enthalpy is usually
Positive, because the potential energy of the reactants is higher than the potential energy of the products
Neutral, because the potential energy of the products and reactants cancel each other out.
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Positive, because the potential energy of the reactants is lower than the potential energy of the products

Answers

Answer:

Negative, because the potential energy of the reactants is higher than the potential energy of the products

Explanation:

Exothermic reaction is a reaction in which heat is released to surrounding. This is due to the fact that the heat content of the reactant is higher than the heat content of product thus producing a negative enthalpy change (ΔH) i.e

Enthalpy change = Heat of product – Heat of reactant

ΔH = Hp – Hr = negative

Considering the options given in the question above, the correct answer is:

Negative, because the potential energy of the reactants is higher than the potential energy of the products

9) What is the density of the gold rock with a mass of 386 grams and has a volume of 20 cubic centimeters?
O 0.193 g/cc
O 193 g/cc
O 1.93 g/cc
19.3 g/cc

Answers

Answer:

density= mass/volume

hence density of gold rock

= 386/20

=19.3 g/cc

In a solution, litmus is blue. The pH of the solution could be
1. 10
2. 2
3. 3
4. 4

Answers

Answer:

1. 10

Explanation

when litmus paper is blue that means the solution is basic and 10 on the pH scale is the most basic out of all your options

How can I express the composition of a solution?

Answers

Answer:

It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams ...

Explanation:

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