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4 years ago

How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen? this is the formula for the reaction:?

1 answer:

5 0

Mg + O2(o is a diatomic element)⇒ Mg O(UNBALANCED)
Mg is +2, o is -2, so MgO is the product.
BALANCED EQUATION : 2Mg + O2 ⇒ 2MgO
There are 4 moles of magnesium, so there should be 4/2*2=4 moles of oxygen, and the product will have 4+4=8 moles.
there will be 8 moles of magnesium oxide.

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2 SO3 (g) + Heat <-----> 2 SO2 (g) + O2 (g)

Step2247 [10]

Answer:

The concentration of SO₂ will decreases

Explanation:

As you can see in the reaction

2 moles of gas ⇆ 3 moles of gas

Based on Le Châtelier's principle, a change doing in a system will produce that the system reacts in order to counteract the change made.

If the pressure is increased, the system will shift to the left in order to produce less moles of gas and decrease, thus, the pressure.

As the system shift to the left, the concentration of SO₂ will decreases

7 0

3 years ago

The molar mass of barium nitrate (ba(no3)2) is 261.35 g/mol. what is the mass of 5.30 × 1022 formula units of ba(no3)2? 0.0900 g

liberstina [14]

Molar mass is the ratio of the mass to that amount of the substance. The mass of the barium nitrate in the formula unit is 23.0 grams.

The mass of a substance is the product of the molar mass of the compound and the number of moles of the compound.

Given,

Molar mass of barium nitrate = 261.35 g/mol

If, $6.022 \times 10^{23}$ have a mass of 261.35 g/mol then, $5.30 \times 10^{22}$ formula units will have a mass of,

$\begin{aligned}& = \dfrac{261.35 \times 5.30 \times 10^{22}}{6.022\times 10^{23}}\\\\&= 23.0\;\rm gm\end{aligned}$

Therefore, option C. 23.0 gm is the mass of barium nitrate.

Learn more about mass here:

brainly.com/question/24958554

6 0

2 years ago

What is the energy of a moving mass?

satela [25.4K]

Answer:

Kinetic energy

Explanation:

This is the energy possessed by a moving object.

6 0

3 years ago

1. Why is the box sitting on the table not moving?

Rashid [163]

I believe it’s a because something cannot move unless a force is acted upon it

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3 years ago

A simple circuit consists of a battery to provide power, wires to carry the ______, and load that uses the _________-for example

kipiarov [429]

A simple circuit consists of a battery to provide power, wires to carry the electrical power, and
load that uses the electrical power for example a light globe

good luck

6 0

3 years ago