All categories

2 years ago

Given:

Chemistry

1 answer:

faltersainse [42]2 years ago

5 0

Answer:

6moles of Mg

Explanation:

The reaction expression is given as:

BO₃ + 3Mg → 3MgO + B

Given:

Number of moles of B produced = 2 moles

Unknown:

Number of moles of Mg required = ?

Solution:

From the balanced reaction expression:

1 mole of B is produced from 3 moles of Mg

2 moles of B will be produced from 2 x 3 = 6moles of Mg

You might be interested in

Which two subatomic particles are located in the nucleus of an atom?

natta225 [31]

Two subatomic particles that are located in the nucleus of an atom are Protons and Neutrons.

4 0

3 years ago

Which of the following would be the best representation of input energy and then

Rom4ik [11]

A is the correct answer

4 0

2 years ago

2. What mass of water absorbs 6700 J of heat to raise the temperature from 283K to 318K?

Alexxandr [17]

Answer:

Q = mcT ...you can either substitute the molar heat capacity of water in the place of c or the specific heat capacity of water.

Explanation:

7 0

2 years ago

The energy that a log has is transformed when burned. How does the chemical energy of the log compare to the heat and light ener

SCORPION-xisa [38]

The amount of chemical energy is equal to the amount of heat and light energy.

This is due to the principle of conservation of energy, which states that the total energy of a system remains constant.

4 0

3 years ago

What is the net ion charge of Beryllium?

KATRIN_1 [288]

Explanation:

Beryllium is a group 2 element and its atomic number is 4. Electronic configuration of beryllium is $1s^{2}2s^{2}$ .

Since, a beryllium contains two valence electrons so, in order to attain stability it will readily lose its 2 valence electrons.

Therefore, a beryllium atom upon losing two valence electrons will acquire a +2 charge.

Thus, we can conclude that the net ion charge of Beryllium is +2.

7 0

3 years ago