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3 years ago

Which statement best characterizes chemical reactions?

Chemistry

1 answer:

deff fn [24]3 years ago

4 0

Answer:

I think it is B

Explanation:

I hope that helps.

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Phosphoric acid (H3PO4) is a triprotic acid because each of its three hydrogen atoms may dissociate in water. What mathematical

Juli2301 [7.4K]

The formula that connects Ka1, Ka2, and Ka3 is the relation;

Ka = Ka1 * Ka2 * Ka3

The Ka is defined as the acid dissociation constant of a solution. Now we have the triprotic acid called phosphoric acid. this implies that we have Ka1, Ka2, and Ka3.

Thus the formula that connects Ka1, Ka2, and Ka3 is the relation;

Ka = Ka1 * Ka2 * Ka3

Learn more about Ka:brainly.com/question/16035742

#SPJ1

6 0

3 years ago

Consider the following balanced equation for the following reaction:

Sidana [21]

Answer: The actual yield of the carbon dioxide is 47.48 grams

Explanation:

For the given balanced equation:

$15O_2(g)+2C_6H_5COOH(aq.)\rightarrow 14CO_2(g)+6H_2O(l)$

To calculate the mass for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Theoretical moles of carbon dioxide = 1.30 moles

Molar mass of carbon dioxide = 44 g/mol

Putting values in above equation, we get:

$1.30mol=\frac{\text{Theoretical yield of carbon dioxide}}{44g/mol}\\\\\text{Theoretical yield of carbon dioxide}=(1.30mol\times 44g/mol)=57.2g$

To calculate the theoretical yield of carbon dioxide, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Theoretical yield of carbon dioxide = 57.2 g

Percentage yield of carbon dioxide = 83.0 %

Putting values in above equation, we get:

$83=\frac{\text{Actual yield of carbon dioxide}}{57.2}\times 100\\\\\text{Actual yield of carbon dioxide}=\frac{57.2\times 83}{100}=47.48g$

Hence, the actual yield of the carbon dioxide is 47.48 grams

7 0

3 years ago

3. what is the relationship between a coefficient; chemical formula

Novosadov [1.4K]

The coefficient in a chemical formula represents the amount of each chemical present. The amount of a substance is measured in moles.

4 0

3 years ago

The polar nature of water molecules gives water many unique properties. Which of these statements is NOT true regarding the prop

inessss [21]

B) Water only dissolves other non-polar molecules.

This option is wrong because water is a polar molecule and it can dissolve only other polar molecules.

6 0

4 years ago

Read 2 more answers

Be sure to answer all parts. Give the name and the formula of the compound formed from the following elements: (a) bromine and r

MA_775_DIABLO [31]

Answer:

These are the chemical names and molecular formula of the compounds formed from these elements:

Rubidium + Bromine = Rubidium bromide, RbBr
Strontium + Sulphur = Strontium sulfide, SrS
Barium and Chlorine = Barium chloride,  $BaCl_{2}$

7 0

3 years ago