CHEMISTRY HIGH SCHOOL

What is the [H+] of an HCl solution if the pH is measured to be 6? Select one: a. 1 X 10-7 M b. 1 X 10-6 M c. 6 X 10-6 M d. 8 X 10-1 M

Answers

Answer 1
Answer:

Answer : The correct option is, 1* 10^(-6)M

Explanation :  Given,

The value of pH of HCl = 6

As we know that,

pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.

The formula of pH is :

pH=-\log [H^+]

Now put all the given values in this formula, we get the concentration of hydrogen ion.

6=-\log [H^+]

[H^+]=1* 10^(-6)M

Therefore, the concentration of hydrogen ion is, 1* 10^(-6)M
Answer 2
Answer: pH=-\log_(10) [H^+] \Rightarrow [H^+]=10^(-pH) \n \npH=6 \n\ [H^+]=10^(-6)=1 * 10^(-6)

The answer is B. 1 × 10⁻⁶ M.

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The function of hydrochloric acid in the gastric juice.

Answers

the function of hydrochloric acid is to melt the food

Which is a pure substance?
soda
gasoline
salt water
carbon dioxide

Answers

Answer: Carbon dioxide is a pure substance.

Explanation: A pure substance is defined when a substance has a single type of molecule. If more than 1 type of molecule is present in a substance, then it is considered as a mixture.

  • Soda is basically a mixture of water and carbon dioxide. More than 1 type of molecule is present.
  • Gasoline is a mixture of may gases. More than 1 type of molecule is present.
  • Salt water contains salt and water molecules, hence it is considered as a mixture.
  • Carbon dioxide has only 1 type of molecule which is CO_2 molecules. Hence, it is a pure substance.

Answer:

Carbon dioxide

Explanation:

Which of the following types of coal requires the most intense pressure in order to form?

Answers

Coal is ranked into four types depending on its carbon content. They are lignite, sub-bituminous, bituminous and anthracite. It is anthracite which has the highest carbon content thus the type of coal that needs more pressure to form. Also, it has the highest carbon content. 

Answer:

anthracite

Explanation:

simple

To form a hydrogen bond, what must the non-hydrogen atom (NN, OO, or FF) involved in the bond possess?

Answers

Answer:

It can occur with any of the atoms mentioned

Explanation:

Hydrogen bonds are the most intense type of intermolecular force that occurs between permanent dipoles of molecules, where the positive pole is always hydrogen, and the negative pole can be fluorine(F), oxygen(O) or nitrogen(N), since these elements are quite electronegative.

In other words, these atoms most strongly attract double-bonded electrons and are negatively charged.

An example to consider is hydrogen fluoride (HF) molecules, a polar molecule. In the solid state, its molecules attract, so that the positive (hydrogen) pole of one molecule attracts the negative (fluorine) pole of another.

Why do goldfish in a crowded bowl have a better chance of survival in cold water than in warm water

Answers

Due to high amount of dissolved oxygen in cold water, goldfish have a better chance of survival.

what is dissolved oxygen?

Dissolved oxygen is the amount of oxygen that is present in the water bodies.

As dissolved oxygen is very much important for the aquatic animals because their survival depends on the water. When we increases the temperature of water then the amount of dissolved oxygen decreases which cuts off the supply of oxygen to the aquatic animals. That's why every aquatic specie has a better chance of survival in the cold water, due to presence of the abundant dissolved oxygen.

Hence, goldfish has a better survival in cold water because of dissolved oxygen.

To learn more about dissolved oxygen, visit below link:

brainly.com/question/26073928
Gases are less soluble in warm water, which means that the oxygen leaves the water and the fish dies. Cold water keeps oxygen in for longer.

How can flood water affect the public drinking water supply?

Answers

Flood water will ruin the clean water. This will cause the water to be undrinkable. Flood water will get into homes and ruin roads. Even though it may seem like it is doing a good thing by adding more water, the water is not filtered and clean for drinking.
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