CHEMISTRY HIGH SCHOOL

According to one acid-base theory, a base is an(A) H^+ acceptor
(B) Na^+ acceptor
(C) H^+ donor
(D) Na^+ donor

Answers

Answer 1
Answer: A. Proton acceptor and this is according to the bronsted Lowry theory

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Scientific Notation expresses a value as the product of a number between 1 and 10 and

Answers

... and a power ot ten.

For example: 1,3x10^21 is in scientific notation, but 13x10^20 is not in scientific notation.

What happens when atoms of uranium split apart __?

Answers

a large amount of heat comes out as E= m c^2

Any substance composed of two or more elements that are chemically combined in a fixed proportion is(1) an isomer (3) a solution
(2) an isotope (4) a compound

Answers

Any substance composed of two or more elements that are chemically combined in a fixed proportion is known as a Compound. Thus, it's D.

What do you mean by Elements?

Elements may be defined as any substance that cannot be disintegrated into more superficial substances by standard chemical processes.

In chemistry, an isomer may be defined as those molecules which the same molecular formulas, but different arrangements of atoms.

An Isotope may be defined as an atom that bears the same atomic number and chemical identities but possesses a different atomic mass.

A solution may be defined as a homogeneous mixture of one or more solutes disbanded in a specific solvent.

Therefore, the correct option for this question is D.

To learn more about Compounds, refer to the link:

brainly.com/question/26556885

#SPJ2
(4) a compound is the correct answer~

Any substance that yields a hydrogen ion when placed in a water solution is called a(n) _____.acid
base
hydronium ion
hydroxide ion

Answers

Answer : Option A) Acid


Explanation : Any substance that yields a hydrogen ion when placed in a water solution is called an acid.


According to Arrhenius theory of Acids and Bases, Acids are those substances which on dissociation in solution generates H^(+) ions. Whereas a Base is a substance that dissociates in the solution to produce OH^(-) ions.

Answer:

the answer is acid.

Explanation:

A substance has an empirical formula of CH2 and a molar mass of 56 grams per mole. The molecular formula for this compound is(1) CH2 (3) C4H8
(2) C4H6 (4) C8H4

Answers

(3) C4H8
C=12, H=1
CH2= 12+2=14
(CH2)n=56g/mol
14n=56
n=4
(CH2)4=C4H8

Answer:

3) C4H8

Explanation:

Castle learning

What is the process in which an unstable atomic nucleus emits charged particles or energy or both?a. radioactivity
b. oxidation
c. decomposition
d. none of the above

Answers

Answer:

Option (A)

Explanation:

Radioactivity is defined as a process in which an unstable atomic nucleus decays continuously and after a specific period of time changes into a much more stable element. During this time of decay, the nucleus emits charged particles (energy) which are known as the α, β and γ particles. These are often emitted in the form of electromagnetic energy and are very dangerous to health.

The radioactive elements decay at a certain rate which is commonly known as the half-life. Half-life is basically defined as the time required by a radioactive substance to decay half of its initial composition.

Thus, the correct answer is option (A).
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