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4 years ago

Which determines the state of matter for any material?

Chemistry

1 answer:

Paul [167]4 years ago

8 0

Answer: the answer is A and C

Explanation: because they are really kind of both the same

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How can we solve food insecurity while reducing food waste?

Leya [2.2K]

Answer:

donate unused food to food banks

Explanation:

Becuse food banks processes food to make very fine particles which is mixed with soil and can be given to the plants

6 0

3 years ago

Which of the following factors would negatively impair the water quality in a watershed? I. irresponsible use of industrial chem

Deffense [45]

Answer:

1 and 2 only

Explanation: These will make a bad impact on water.

3 0

4 years ago

Read 2 more answers

What is the solubility (in g/L) of calcium fluoride at 25°C? The solubility product constant for calcium fluoride is 3.4 × 10–11

PilotLPTM [1.2K]

Answer: The correct answer is Option b.

Explanation:

The balanced equilibrium reaction for the ionization of calcium fluoride follows:

$CaF_2\rightleftharpoons Ca^{2+}+2F^-$

s 2s

The expression for solubility constant for this reaction will be:

$K_{sp}=[Ca^{2+}][F^-]^2$

We are given:

$K_{sp}=3.4\times 10^{-11}$

Putting values in above equation, we get:

$3.4\times 10^{-11}=(s)\times (2s)^2\\\\3.4\times 10^{-11}=4s^3\\\\s=2.04\times 10^{-4}mol/L$

To calculate the solubility in g/L, we will multiply the calculated solubility with the molar mass of calcium fluoride:

Molar mass of calcium fluoride = 78 g/mol

Multiplying the solubility product, we get:

$s=2.04\times 10^{-4}mol/L\times 78g/mol=159.12\times 10^{-4}g/L=0.015g/L$

Hence, the correct answer is Option b.

3 0

3 years ago

CO2 + H2O -------> H2CO3 balance and classify this equation

borishaifa [10]

CO2 + H2O = H2CO3

Your equation is already balanced, and the reaction type is: synthesis.

6 0

4 years ago

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What is the property of detergents?

defon

Detergents are amphipathic molecules that contain polar or charged hydrophilic groups (heads) at the end of long lipophilic hydrocarbon groups (tails) (Figure 1). They are also known as surfactants because they decrease the surface tension of water.

8 0

2 years ago

Read 2 more answers