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3 years ago

Describe at least two factors that can affect the rate of a chemical reaction.

Chemistry

1 answer:

aleksley [76]3 years ago

3 0

Answer: Concentration or pressure of a reactant and temperature

Explanation: The two major factors that can affect the rate of a chemical change are concentration or pressure of a reactant and temperature.

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Write balanced equation of carbon burning in air

Ne4ueva [31]

Answer:

When carbon is burned in air, it forms carbon dioxide gas and releases a large amount of heat and some light:

C+O2= CO2+ heat+ light

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2 years ago

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Balance this equation: CH4 +2O2--------> ___ CO2 + ___ H2O

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Answer:

b-1 CO2+ 2H2O

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3 years ago

What is the formula for the compound made from mercury (II) and the nitrate ion.

Kazeer [188]

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Hg(NO3)2

Explanation:

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2 years ago

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Al (s) + CuSO4 (aq) → Cu (s) + Al2(SO4)3 (aq)

azamat

Answer:

Explanation:

Al (s) + CuSO4 (aq) → Cu (s) + Al2(SO4)3 (aq)

2Al (s) + 3CuSO4 (aq) → 3Cu (s) + Al2(SO4)3 (aq).

is the balance chemical equation

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3 years ago

This patient has a bone density of 820mg/cm3. What is the volume of a 25g sample?

mamaluj [8]

<u>Answer:</u> The volume of bone for given sample is $30.49cm^3$

<u>Explanation:</u>

To calculate volume of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of bone = $820mg/cm^3=0.82g/cm^3$ (Conversion factor: 1 g = 1000 mg)

Mass of bone = 25 g

Putting values in above equation, we get:

$0.82g/cm^3=\frac{25g}{\text{Volume of bone}}\\\\\text{Volume of bone}=30.49cm^3$

Hence, the volume of bone for given sample is $30.49cm^3$

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3 years ago