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antiseptic1488 [7]
3 years ago
10

Which one is a true statement about endothermic reactions?

Chemistry
2 answers:
djverab [1.8K]3 years ago
7 0
D energy is absorbed making it feel colder.
The definition of endothermic means energy is absorbing and there is not as much heat anymore
Fofino [41]3 years ago
3 0

Answer;

D) Energy is absorbed making it feel colder.

Explanation;

An endothermic reaction is a reaction in which heat energy is absorbed from the surroundings. In such a reaction the energy of the reactants is less than the energy of the products and therefore the enthalpy change is positive, greater than zero.

An endothermic reaction occurs when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products. This means that overall the reaction takes in energy, therefore there is a temperature decrease in the surroundings.

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The ph of black coffee is 5, and that of milk of magnesia is 10. is the coffee twice as acidic as milk of magnesia?
mote1985 [20]
I’m guessing no because the ph of coffeee is five
5 0
3 years ago
Changes in which measurements do not shift the equilibrium of a chemical system
erastova [34]

Any Change in the amount of an inert gas into a gas-phase equilibrium at constant volume does not result in a shift of the equilibrium of a chemical system. This follows the equilibrium law.

<h3>What is Equilibrium law ?</h3>

According to this principle, Adding an inert gas into a gas-phase equilibrium at constant volume does not result in a shift.

This is because the addition of a non-reactive gas does not change the partial pressures of the other gases in the container.


While the total pressure of the system increases, the total pressure does not have any effect on the equilibrium constant.

Learn more about chemical equilibrium here;
brainly.com/question/5537989

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4 0
1 year ago
Convert 7.2 x 10^-5 from scientific notation into standard notation
Ghella [55]

Answer:

720 000

Explanation:

7.2

×

10

5

is already expressed in

standard form

I believe you mean express as

original number

To do this consider

10

5

or more generally

10

n

where n is an integer.

• If n > 0

move decimal point n places to the right

• If n < 0

move decimal point n places to the left

here n = 5 > 0, hence move decimal point 5 places to the right.

⇒

7

∙

2

→

720000

∙

⇒

7.2

×

10

5

=

720

000

Explanation:

6 0
3 years ago
Two glass rods are rubbed together. One of the glass rods are brought near (but
sineoko [7]

Answer:

Do Nothing

Explanation:

Charges are transferred by friction when two different types of bodies are rubbed together. This is known as charging by friction.

However, when two materials of the same type are rubbed together, no charge is transferred from one object to the other hence there is no transfer of charges by friction and none of the two glass rods are charged.

Therefore, when one of the glass rods is brought close but does not touch the pith ball, nothing happens.

5 0
2 years ago
How does the presence of a nucleus provide a method of basic cell classification?
Zanzabum

Answer:

Sample Respond: The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell.

good luck

Explanation:

I got 100 mark as brainiest

7 0
2 years ago
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