All categories

2 years ago

What is 10 feet underneath our feet? Choose the

Chemistry

1 answer:

slava [35]2 years ago

6 0

Answer: Is this like a question cause that is what u think

Explanation:

Mostly soil rock with a very thin layer of soil on top.

You might be interested in

What is a closed container in relation to the law of conservation of mass?

alisha [4.7K]

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

4 0

3 years ago

A chemist dissolves 248mg of pure hydrochloric acid in enough water to make up 140mL of solution.Calculate the pH of the solutio

evablogger [386]

Answer : The pH of the solution is, 1.31

Explanation : Given,

Mass of $HCl$ = 248 mg = 0.248 g (1 mg = 0.001 g)

Volume of solution = 140 mL

Molar mass of $HCl$ = 36.5 g/mole

First we have to calculate the concentration of hydrochloric acid.

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

$\text{Molarity}=\frac{\text{Mass of }HCl\times 1000}{\text{Molar mass of }HCl\times \text{Volume of solution (in mL)}}$

Now put all the given values in this formula, we get:

$\text{Molarity}=\frac{0.248g\times 1000}{36.5g/mole\times 140mL}=0.0485mole/L=0.0485M$

The concentration of HCl is, 0.0485 M

As we know that, HCl dissociates to give hydrogen ion and chloride ion.

The dissociation reaction is:

$HCl\rightarrow H^++Cl^-$

Concentration of HCl = Concentration of H⁺ = Concentration of Cl⁻ = 0.0485 M

Now we have to calculate the pH of the solution.

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

Mathematically,

$pH=-\log [H^+]$

$pH=-\log (0.0485)$

$pH=1.31$

Therefore, the pH of the solution is, 1.31

6 0

3 years ago

Suzanne has a cat and uses a pet carrier to take her cat to the veterinarian. After a few years, the cat runs away and hides eve

Ulleksa [173]

Answer:

conditioned

Explanation:

The best term to describe the behavior of the cat is conditioned.

The cat has been conditioned to respond in a specific way to the pet carrier over time due to certain experiences - most likely, unpleasant ones. With repeated unpleasant experience associated with the per carrier, the cat has been conditioned to dislike/fear the pet carrier and thus, the recorded behavior.

7 0

2 years ago

Read 2 more answers

A group of analytical chemists are examining a compound. They find that it's composed of 34.4% iron and 65.6% chlorine by

Rina8888 [55]

Answer:

B.FeCl₂

Explanation:

there is twice as much chlorine as there is iron

4 0

3 years ago

Read 2 more answers

Which change occurs during a nuclear fission reaction?

AnnyKZ [126]

Answer;

Matter is converted to energy

Explanation;

Nuclear fission is a type of nuclear reaction in which a nuclei of an atom splits or breaks down into two or more smaller nuclei.
It involves subdivision of heavy nucleus of an atom such as Uranium into two or more fragments which has almost the same equal mass.
Nuclear fission is accompanied by release of large amount of energy, thus we can say that matter is converted to energy.

6 0

3 years ago

Read 2 more answers