All categories

3 years ago

Which describes the fourth state of matter known as plasma

2 answers:

6 0

an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, typically at low pressures (as in the upper atmosphere and in fluorescent lamps) or at very high temperatures (as in stars and nuclear fusion reactors).

Elis [28]3 years ago

5 0

It is a gas containing nuclei and electrons

You might be interested in

The Earth’s circumference around the equator is slightly bulged as compared to the circumference around the poles. If the circum

Elanso [62]

Answer: 48.123 Mm

Explanation:

8 0

3 years ago

Question10 of 10Iron reacts with hydrochloric acid to produce iron(II) chloride and hydrogen gas.Fe + 2 HCl --> FeCl2 + H2How

Agata [3.3K]

<u>Answer:</u> The number of moles of HCl that will react with given amount of Fe is 9.2 moles.

<u>Explanation:</u>

We are given:

Moles of iron = 4.6 moles

For the given chemical reaction:

$Fe+2HCl\rightarrow FeCl_2+H_2$

By Stoichiometry of the reaction:

1 mole of iron reacts with 2 moles of hydrochloric acid.

So, 4.6 moles of iron will react with = $\frac{2}{1}\times 4.6=9.2mol$ of hydrochloric acid.

Hence, the number of moles of HCl that will react with given amount of Fe is 9.2 moles.

8 0

3 years ago

What is the mass in grams for 7.14x10^3 mol of PCI3?

Shalnov [3]

Answer:

980,536.2 grams

Explanation:

The mass of a compound is equal to its moles times its molar mass.

The molar mass of PCl3 is 137.33 g/mol

137.33 x 7.14 x 10^3 = 980,536.2

3 0

2 years ago

What is the percent composition of hydrogen in a compound if the mass of the initial compound is 276 gram and the mass of collec

mariarad [96]

Answer: The percentage composition of hydrogen in the given compound is 15%.

Explanation:

To calculate the percentage composition of hydrogen in a compound, we use the formula:

$\%\text{ composition of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Mass of compound}}\times 100$

Where,

Mass of hydrogen = 41.4 grams

Mass of compound = 276 grams

Putting values in above equation, we get:

$\%\text{ composition of hydrogen}=\frac{41.4g}{276}{\times 100$

Percentage composition of hydrogen in a given compound = 15%

8 0

3 years ago

Describe the reactions during the electrolysis of waterA) Oxygen is reduced and hydrogen is oxidized.B) Oxygen and hydrogen are

Natalka [10]

Answer:

D) Oxygen is oxidized and hydrogen is reduced.

Explanation:

In the electrolysis of water, an electric current passes through an electrolytic solution (e.g. aqueous NaCl), leading to the following redox reaction.

H₂O(l) → H₂(g) + 1/2 O₂(g)

The corresponding half-reactions are:

Reduction: 2 H₂O(l) + 2 e⁻ → H₂(g) + 2 OH⁻

Oxidation: 2 H₂O(l) → O₂(g) + 4 H⁺(aq) + 4 e⁻

As we can see, H in water is reduced (its oxidation number decreases from 1 to 0), while O in water is oxidized (its oxidation number increases from -2 to 0).

3 0

4 years ago