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3 years ago

What is the mass of the oxygen in one mole of calcium phosphate

Chemistry

2 answers:

nevsk [136]3 years ago

7 0

Answer:

16.00 g/mol

Explanation:

mixer [17]3 years ago

3 0

Answer:

16.00 g/mol

Explination:

1 mol of calcium phosphate contains 8 moles of oxygen. From this, we can compute for the amount of oxygen in grams using the molar mass of oxygen, which is 16.00 g/mol.

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What is meant by the term "boiling point of water"

Mamont248 [21]

Answer:

boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature

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3 years ago

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What is the final pH of a solution when 0.1 moles of acetic acid is added to water to a final volume of 1L?

kicyunya [14]

Answer:

The pH of solution is 2.88 .

Explanation:

The reaction is :

$CH_3COOH-->CH_3COO^-+H^+$

We know, $K_a$ for this reaction is = $1.76\times 10^{-5}.$

Also, since volume of water is 1 L.

Therefore, molarity of solution is equal to number of moles.

Also, $K_a=\dfrac{[CH_3COO^-][H^+]}{[CH_3COOH]}$

Let, amount of $CH_3COO^- and\ H^+$ produce is x.

So,

$K_a=\dfrac{[x][x]}{[0.1]}\\1.76\times 10^{-5}=\dfrac{[x][x]}{[0.1]}$

$x=0.0013\ mol.$

We know, $pH=-log{x}=-log(0.0013)=2.88$

Therefore, pH of solution is 2.88 .

Hence, this is the required solution.

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3 years ago

Compared to the mass and the penetrating power of an alpha particle, a beta particle has(1) less mass and greater penetrating po

seropon [69]

Answer is (1) - less mass and greater penetrating power.

Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.

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3 years ago

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S_A_V [24]

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Explanation: Over the course of a year, areas near Earth’s equator receive more direct energy from the Sun than areas near Earth’s poles. Which of the following correctly describes one result of this heating pattern?

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3 years ago

How many grams of Aspirin (acetylsalicylic acid) should we form in this reaction if we started with 2.08g of Salicyclic Acid?

Kamila [148]

Taking into account the reaction stoichiometry, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

C₄H₆O₃ + C₇H₆O₃ (Salicyclic Acid) →C₉H₈O₄ (aspirin) + C₂H₄O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₄H₆O₃: 1 mole
C₇H₆O₃: 1 mole
C₉H₈O₄: 1 mole
C₂H₄O₂: 1 mole

The molar mass of the compounds is:

C₄H₆O₃: 102 g/mole
C₇H₆O₃: 138 g/mole
C₉H₈O₄: 180 g/mole
C₂H₄O₂: 60 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₄H₆O₃: 1 mole ×102 g/mole= 102 grams
C₇H₆O₃: 1 mole ×138 g/mole= 138 grams
C₉H₈O₄: 1 mole ×180 g/mole= 180 grams
C₂H₄O₂: 1 mole ×60 g/mole= 60 grams

<h3>Mass of aspirin formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 138 grams of salicyclic acid form 180 grams of aspirin, 2.08 grams of salicyclic acid form how much mass of aspirin?

$mass of aspirin=\frac{2.08 grams of salicyclic acidx 180 grams of aspirin}{138 grams of salicyclic acid}$

<u><em>mass of aspirin= 2.713 grams</em></u>

Then, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

Learn more about the reaction stoichiometry:

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7 0

2 years ago