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3 years ago

Which is a diatomic molecule? A)Ar B)CO C)CO2 D)NaCl

Chemistry

2 answers:

Molodets [167]3 years ago

8 0

Answer:

C. CO2

Explanation:

LUCKY_DIMON [66]3 years ago

5 0

Answer:

C. Co2

Explanation:

Oxygen is a diatomic molecule because 2 atoms are conisistebof a normal molecule.

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Metals posses varying reduction potentials. Iron can reduce Cu+2 (aq) to copper metal. Silver can reduce Au+ (aq) to gold metal.

natta225 [31]

Answer: The true statement is iron can reduce $Au^+(aq)$ to gold metal

Explanation:

Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction.

The reactivity of metal is determined by a series known as reactivity series. The metals lying above in the series are more reactive than the metals which lie below in the series.

$A+BC\rightarrow AC+B$

Metal A is more reactive than metal B.

We are given:

Iron can reduce copper, silver can reduce gold, sodium can reduce iron and copper can reduce silver metal.

The increasing order of reactivity thus follows:

$Au$

where, sodium is most reactive and gold is least reactive

For the given options:

Option 1: Copper cannot easily reduce sodium ion to sodium metal because it is less reactive.

$Cu(s)+Na^+(aq.)\rightarrow \text{ No reaction}$

Option 2: Iron cant easily reduce gold ion to gold metal because it is more reactive.

$Fe(s)+3Au^+(aq.)\rightarrow Fe^{3+}(aq.)+3Au(s)$

Option 3: Silver cannot easily reduce iron ion to iron metal because it is less reactive.

$Ag(s)+Fe^{3+}(aq.)\rightarrow \text{ No reaction}$

Hence, the true statement is iron can reduce $Au^+(aq)$ to gold metal

7 0

3 years ago

What fraction of the original atoms of the radioactive sample will remain after the given number of half-lives has passed?

meriva

Answer:

1/8

Explanation:

$\frac{1}{ {2}^{3} } = \frac{1}{8}$

Mark brainliest please

5 0

2 years ago

Assignment: The Meaning of Mitosis Exploration

hjlf

1. Mitosis is a process where a single cell divides into two identical daughter cells (cell division).

2. Mitosis is important because it plays an important part in the development of embryos, and it is important for the growth and developemet of our body as well.

3. The four phases of mitosis are: Prophase, metaphase, anaphase, and telophase.

4. Two gap phases (G1 and G2); an S (for synthesis) phase, in which the genetic material is duplicated.

5. During S phase all of the chromosomes are replicated.

I hope that helps! c:

5 0

3 years ago

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The graph indicates the running route for Tobias.

Musya8 [376]

Answer: b

Explanation:

7 0

3 years ago

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Which substance is a binary compound?

AysviL [449]

A binary compound is a compound that contain two different chemical elements in it. These compounds may be molecular or may also exist in other forms such as solid. In this case Barium and Beryllium are not binary compounds since they are independent elements, Calcium hydroxide is also not a binary compound since it has more than two chemical elements. Therefore,carbon dioxide is the binary compound since it contains two chemical elements ( carbon and oxygen)

4 0

3 years ago

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