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3 years ago

The molar solubility of manganese(ii) carbonate is 4.2 × 10–6m. what is kspfor this compound?

1 answer:

3 0

The ionisation eq for MNCO3 is given by MnCO3 --> Mn^2+ + CO3^2- Recall Ksp=[Mn^2+][CO3^2-] From the chemical reaction one moles of manganese and carbon reacts Here molar solubility of MnCO3 is 4.2 * 10^-6 M; Which means that when 4.2 * 10^-6 moles of [Mn^2+] reacts, it also reacts with 4.2 x 10^-6 M of CO3 Thus Ksp= 4.2 x 10^(-6) x 4.2 x 10^(-6) = 17.64 * 10^(-6+(-6)) = 17.64 * 10^(-12)

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Using Le Chatelier’s principle, predict which equilibrium system below decrease the concentration of the reactant (H2CO3) as a r

seropon [69]

Answer:

The correct answer is c add more HCO3- by adding NaHCO3.

Explanation:

The reaction mentioned in the question is carried out by bicarbonate buffer system of our body to maintain the normal acid base balance.

Now concentration of the reactant (H2C03) is decreased then NaHCO3 should be added which undergo breakdown to release bicarbonate ions(HCO3-).

The released bicarbonate ions then reacts with H+ to form Carbonic acid(H2CO3).Thus homeostasis of H2CO3 is maintained.

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3 years ago

Read 2 more answers

What is the pH of a 5.09 x 10-5 M solution of NaOH?

Varvara68 [4.7K]

Answer: The pH of the solution is 9.71

Explanation:

1 mole of NaOH produces 1 mole of sodium ions and 1 mole of hydroxide ions.

We are given:

pOH of the solution = 7.2

To calculate the pH of the solution, we need to determine pOH of the solution. To calculate pOh of the solution, we use the equation:

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=5.09\times 10^{-5}M$

Putting values in above equation, we get:

$pOH=-\log(5.09\times 10^{-5})\\\\pOH=4.29$

To calculate pH of the solution, we use the equation:

$pH+pOH=14\\pH=14-4.29=9.71$

Hence, the pH of the solution is 9.71

7 0

3 years ago

How many molecules are in 7.34 g of Na2CO3

kenny6666 [7]

Answer:

The answer is 105.98844.

<h3>Explanation: </h3>

We assume you are converting between grams Na2CO3 and mole. You can view more details on each measurement unit: molecular weight of Na2CO3 or mol This compound is also known as Sodium Carbonate.

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3 years ago

My teacher is grading this soon can someone help me ASAP!

Stolb23 [73]

10. You demonstrated the difference in density of the two objects. It is a physical property.

11. First calculate the density for all of them: density = mass/volume

Density:

A. 5/6 g/ml

B. 10/9 g/ml

C. 15/16 g/ml

D. 20/10 g/ml

If the density of the substance is higher than the density of the substance it is put in, then it will sink. So substances B and D will sink in water, as their densities are higher than 1 g/ml.

12. Ammonia weighs less than water does-- for example, the weight of 8 gallons of ammonia will be equivalent to the weight of 5 gallons of water.

Hope this helped!

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3 years ago

Match the scientist with their achievement:

Tju [1.3M]

Answer:

Frederich Miescher- first person to isolate DNA and RNA

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Gregor Mendel- documented and demonstrated inheritance patterns

Thomas Hunt Morgan- identified chromosomes as the structures responsible for inheritance

Joachim Hammerling- demonstrated that the hereditary information of of eukaryotes is contained within the nucleus

Alfred Hershey and Martha Chase- demonstrated that dna not protein was the molecule responsible for hereditary

George Beadle and Edward Tatum- used mutants to show the relationship between DNA and proteins

Albrecht Kossel- characterized the structure of adenine, guanine, cytosine, thymine, and uracil

Explanation:

Hope this helps! Pls give brainliest!

5 0

2 years ago