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lbvjy [14]
3 years ago
5

A

Chemistry
1 answer:
Anettt [7]3 years ago
8 0

Answer: The reaction, 2C(s) + MnO_{2}(s) \rightarrow Mn(s) + 2CO(g) is a single-displacement reaction.

Explanation:

A chemical reaction in which one element of a compound is replaced by another element participating in the reaction.

For example, 2C(s) + MnO_{2}(s) \rightarrow Mn(s) + 2CO(g)

Here, the element manganese is replaced by carbon atom. As only one element gets replaced so, it is a single-displacement reaction.

Thus, we can conclude that 2C(s) + MnO_{2}(s) \rightarrow Mn(s) + 2CO(g) is a single-displacement reaction.

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Convert 150 g/L to the unit g/mL.
inn [45]
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CaCO3(s)⇄CaO(s)+CO2(g) When heated strongly, solid calcium carbonate decomposes to produce solid calcium oxide and carbon dioxid
rusak2 [61]

Answer:

1.04 mol

Explanation:

CO₂ is produced in a closed 100 L vessel according to the following equation.

CaCO₃(s) ⇄ CaO(s) + CO₂(g)

At equilibrium, the pressure of carbon dioxide remains constant at 1.00 atm.

First, we need to conver the temperature to the absolute scale (Kelvin scale) using the following expression.

K = °C + 273.15

K = 898°C + 273.15

K = 1171 K

Now, we can find the moles of carbon dioxide using the ideal gas equation.

P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T} = \frac{1.00atm \times 100L}{\frac{0.0821atm.L}{mol.K}  \times 1171K} = 1.04 mol

7 0
3 years ago
A student weighs out a 7.24 g sample of , transfers it to a 300. mL volumetric flask, adds enough water to dissolve it and then
velikii [3]

The molarity of the zinc chloride solution will be 0.089 M

<h3>Molarity</h3>

Mole of 7.24 g ZnCl2 = 7.24/136.286 = 0.5312 mol

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Molarity of the solution = mole/volume = 0.5312/0.6 = 0.089 M

The molarity of the zinc chloride solution is, therefore, 0.089 M

More on molarity can be found here: brainly.com/question/8732513

#SPJ1

4 0
2 years ago
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