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3 years ago

Here is my question only answer if you understand this question

Chemistry

1 answer:

sasho [114]3 years ago

8 0

1- false
2- true
3- true
4- false
5- true
6- false
7- true
8- true
9- true
10- false

Hope it helps :)

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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.

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

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2 years ago

How would scientists most likely describe the system of the Earth in regard to energy?

Nuetrik [128]

Answer:

4 is the best answer but incomplete.

Explanation:

Heat from the Earth is also radiated back into space. The in and out of energy is what makes it an open system.

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3 years ago

The combined forces acting on an object make up the ___ force

sp2606 [1]

Answer:

net force

Explanation:

The net force acting on an object is the combination of all of the individual forces acting on it. ... If two forces act on an object in the same direction, the net force is the sum of the two forces.

3 0

2 years ago

What are chemical contaminants?

AleksandrR [38]

Answer:

Homemade soaps

Restaurant grade cleaners

Alcohol.

Explanation:

The two options are a mixture of more than one chemical constituents.

Soap is made from saponification reaction of of hydrocarbons and then mixed with other ingredients for better usability, and cleaning agent have one or more substances dissolved in another.

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3 years ago

Which of these particles has the greatest mass?(1) quark (3) neutron

oee [108]

The proton slightly beats out the neutron in mass, the electron weighs a lot less, the quark weighs an infinitesimal amount, and the neutrino has no mass

4 0

3 years ago

Here is my question only answer if you understand this question​

Here is my question only answer if you understand this question