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Aleks04 [339]
3 years ago
13

The official web site of the Nobel Prize explains that Marie Curie’s chemistry prize was partly for her discovery that the radio

activity of a substance is unaffected when it undergoes a chemical reaction. What does this discovery imply?
A.Radioactivity involves all particles that make up an atom.
B.Radioactivity involves the particles that make up an atom’s nucleus.
C.Radioactivity involves only neutrons.
D.Radioactivity involves only the electrons in an atom’s electron cloud.
Chemistry
2 answers:
never [62]3 years ago
8 0
The correct answer of the given question above would be option A. Based on the given description above about the description of the discovery that the radioactivity of a substance is unaffected when it undergoes a chemical reaction, this implies that r<span>adioactivity involves all particles that make up an atom. Hope this helps.</span>
fiasKO [112]3 years ago
7 0

Answer:

The answer is A on edg hope that helps

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Help me with this question please
mash [69]

<u>Answer:</u>

a. Oxidising agent: Cl₂

b. Reducing agent: NaBr

c. Oxidised: NaBr

d. Reduced: Cl₂

e. Oxidation numbers before reaction: Cl= 0, Na= +1, Br= -1

f. Oxidation numbers after reaction: Cl= -1, Na= +1, Br= 0

<u>Explanation:</u>

Oxidising agents reduces themselves, oxidising other elements/compounds.

Reducing agents oxidise themselves, reducing other elements/compounds.

Oxidation is the <u>loss</u> of electrons or an <u>increase</u> in oxidation number.

Reduction is the <u>gain</u> of electrons or <u>decrease</u> in oxidation number.

6 0
1 year ago
Describe the motion of objects that are viewed from your reference frame both inside and outside while you travel inside a movin
Nutka1998 [239]

Answer:

2 c

Explanation:

8 0
3 years ago
Coal like graphite is composed of carbon. Unlike graphite, coal is formed by decayed, once living matter. Is it a mineral?
Simora [160]
Coal is not a mineral. It's not a mineral because minerals are inorganic. Coal is organic because it comes from decayed living matter. 
3 0
2 years ago
Given the balanced equation:
Vikki [24]

Answer: Option (3) is the correct answer.

Explanation:

When a more reactive element or atom replaces a less reactive atom then this type of reaction is known as single displacement reaction.

In the given reaction, potassium iodide reacts with fluorine and results in the formation of potassium fluoride and iodine.

Here, fluorine being more reactive displaces iodine from potassium iodide.

Therefore, it is a single replacement or displacement reaction.

8 0
3 years ago
What is the name of the compound that goes with the chemical formula mgcl2
Dimas [21]
Magnesium chloride is the name for the chemical compounds with the formulas MgCl2 and its various hydrates MgCl2(H2O<span>)x. These salts are typical ionic halides, being highly soluble in water. The hydrated magnesium chloride can be extracted from brine or sea water.</span>
7 0
3 years ago
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