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3 years ago

What is the median of the following set: 2, 4, 6, 8, and 10?

Chemistry

1 answer:

labwork [276]3 years ago

6 0

Answer:9

Explanation:

(3+8+10+15)/4 = 36/4 = 9

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How many grams of aluminum will<br> react fully with 1.25 moles Cl₂?

Liula [17]

2Al + 3Cl₂ → 2AlCl₃

mol Al = 2/3 x 1.25 = 0.83

mass Al = 0.83 x 27 g/mol = 22.41 g

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2 years ago

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a ______.

AleksAgata [21]

Answer:

Catalyst

Explanation:

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a catalyst.

Catalysts are used in industrial processes to speed up the rate of a chemical reaction. For instance, in the Contact process used in the production of sulphuric (vi) acid, vanadium(V) oxide (V2O5) is used as a catalyst to speed up the production of the acid. Vanadium(V) oxide (V2O5) is preferred to Platinum which was initially used as the catalyst since it does not react with any of the products of the process

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3 years ago

What will the sun become when it dies

Nina [5.8K]

Answer:

It will become a red giant

Explanation:

When the sun runs out of its hydrogen fuel and the hydrogen atoms are combined together to make helium atoms, it expands into a red giant, which is made up of helium atoms and gases.

5 0

2 years ago

Which of the following is a farming method that helps reduce the effects of wind erosion?

MrMuchimi

You can reduce wind erosion by providing a protective plant cover for the soil.

4 0

3 years ago

According to the following reaction, how many grams of nitrogen monoxide will be formed upon the complete reaction of 31.0 grams

Mumz [18]

23.227 grams of NO is formed upon the complete reaction of 31.0 grams of oxygen gas with excess ammonia.

Explanation:

The balanced chemical equation is:

4NH3 + 5O2 ⇒ 4NO + 6H20

Number of moles will be calculated.

31 grams of oxygen is given

atomic weight of oxygen gas i.e O2 = 32gm/mole

The molar mass of oxygen gas is 32 grams/mole which is equal to one mole of the molecule.

Number of moles (n) = $\frac{mass}{atomic mass of one mole of the substance}$

n= $\frac{31}{32}$

n = 0.968 moles of oxygen are given for the reaction to occur.

From the balanced chemical equation it can be seen

5 moles of oxygen yielded 4 moles of NO

So, 0.968 moles of oxygen yield x moles of NO

$\frac{4}{5}$ = $\frac{x}{0.968 }$

4 × 0.968 =5x

x = 0.774 moles of NO will be formed.

To calculate the mass of NO

mass= atomic mass x number of moles

atomic mass of NO is 30.01 grams/mole

putting the values in the formula:

mass = 30.01 x 0.774

= 23.227 grams of NO is formed.

8 0

3 years ago