Use the model of a molecule to answer the question, how many atoms of carbon does this molecule have?

Chemistry

2 answers:

snow_lady [41]2 years ago

7 0

Answer:

I think it's 4 carbon atoms

Alenkinab [10]2 years ago

6 0

Answer:

More generally, when a carbon atom is bonded to four other atoms, the molecule (or part of a molecule) will take on a tetrahedral shape similar to that of methane. (if this doesn't help sorry :<)

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Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature

alisha [4.7K]

Answer:

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

Explanation:

Pressure of carbon dioxide gas = P = 0.25 atm

Volume of carbon dioxide gas = V = 5.0 L

Moles of carbon dioxide gas = n

Temperature of the carbon dioxide gas,T = 550°C = 550+273 K = 823 K

Using an ideal gas equation :

$PV=nRT$

$n=\frac{PV}{RT}=\frac{0.25 atm\times 5.0 L}{0.0821 atm L/mol K\times 823 K}$

n = 0.018 mol

In 10 minutes pressure of carbon dioxide gas reached to 0.25 atm

Average rate of production of moles of carbon dioxide gas per minute in duration of 10 minutes:

$=\frac{0.018 mol}{10 min}=0.0018 mol/min$

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

8 0

3 years ago

The granite statue of a hero in the local park is discolored.Your friend suggests that the rain will clean the statue.Do you agr

podryga [215]

Answer:

No because the statue is discolored from weathering.

Explanation:

Since the statue was already discolored, that means the substance has been acted upon by a process known as weathering .

Weathering is the breaking down of rocks or dissolving of rocks by the action of rain water, biological activities and temperatures changes. Weathering may be mechanical or chemical . Mechanical weathering live no changes in the overall chemical change of the weathered rock.

Chemical weathering usually occurs when rain water reacts with mineral constituent of rock to form a new minerals like clay and soluble salt. The Chemical changes can be more rapid if the rain water is slightly acidic. The rainwater in the presence of oxygen(oxidation), because of it acidity may have caused the discoloration of the granite rock. Rain water will likely promotes weathering not the other way round

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3 years ago

According to the enthalpy diagram below, which of the following statements is true?

stich3 [128]

Answer:it will be c on edg 2021

Explanation:

7 0

2 years ago

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If more solute can be dissolved in a solvent, the solution is:

iragen [17]

The answer is number 1