If an atom is found to have an atomic mass equal to 3 times greater than carbon, what is its atomic mass?_____

Which of the following would force the reaction to favor the produc to favor the products ? CaCO3(8) 2H3O'(aq) Cal(aq) + 3H200)

kotykmax [81]

Explanation:

(a) According to Le Chatelier's principle, any disturbance caused in an equilibrium reaction will shift the eqilibrium in a direction that will oppose the change.

For example, $CaCO_{3}(s) + 2H_{3}O^{+}(aq) \rightleftharpoons Ca^{2+}(aq) + 3H_{2}O(l) + CO_{2}(g)$

So, in this reaction when we any of the reactants then it means there is less stress on reactant side. Hence, the reaction will move in the backward direction.

Whereas when we remove $CO_{2}$ then there will be decrease in concentration of products as the concentration of carbon dioxide has decreased. Hence, the reaction will shift on the product side, that is, reaction will shift in the forward direction.

Thus, we can conclude that out of the given options removing $CO_{2}$ as it is formed would force the reaction to favor the produc to favor the products.

(b) As the reaction equation is as follows.

$3NO(g) \rightleftharpoons N_{2}O(g) + NO_{2}(g) + Heat$

Since, it is an exothermic reaction, that means when temperature is increasing then more amount of energy will release on the product side.

Hence, the reaction will shift on the reactant side, that is on the left hand side equilibrium will shift.

5 0

4 years ago

Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . If of water is pro

Lubov Fominskaja [6]

This is an incomplete question, here is a complete question.

Aqueous sulfuric acid (H₂SO₄) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium sulfate (Na₂SO₄) and liquid water (H₂O) . If 12.5 g of water is produced from the reaction of 72.6 g of sulfuric acid and 77.0 g of sodium hydroxide, calculate the percent yield of water. Round your answer in significant figures.

Answer: The percent yield of water is, 46.8 %

Explanation : Given,

Mass of $H_2SO_4$ = 72.6 g

Mass of $NaOH$ = 77.0 g

Molar mass of $H_2SO_4$ = 98 g/mol

Molar mass of $NaOH$ = 40 g/mol

First we have to calculate the moles of $H_2SO_4$ and $NaOH$ .

$\text{Moles of }H_2SO_4=\frac{\text{Given mass }H_2SO_4}{\text{Molar mass }H_2SO_4}$

$\text{Moles of }H_2SO_4=\frac{72.6g}{98g/mol}=0.741mol$

and,

$\text{Moles of }NaOH=\frac{\text{Given mass }NaOH}{\text{Molar mass }NaOH}$

$\text{Moles of }NaOH=\frac{77.0g}{40g/mol}=1.925mol$

Now we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

From the balanced reaction we conclude that

As, 1 mole of $H_2SO_4$ react with 2 mole of $NaOH$

So, 0.741 moles of $H_2SO_4$ react with $0.741\times 2=1.482$ moles of $NaOH$

From this we conclude that, $NaOH$ is an excess reagent because the given moles are greater than the required moles and $H_2SO_4$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $H_2O$

From the reaction, we conclude that

As, 1 mole of $H_2SO_4$ react to give 2 mole of $H_2O$

So, 0.741 moles of $H_2SO_4$ react to give $0.741\times 2=1.482$ moles of $H_2O$

Now we have to calculate the mass of $H_2O$

$\text{ Mass of }H_2O=\text{ Moles of }H_2O\times \text{ Molar mass of }H_2O$

Molar mass of $H_2O$ = 18 g/mole

$\text{ Mass of }H_2O=(1.482moles)\times (18g/mole)=26.68g$

Now we have to calculate the percent yield of water.

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

Now put all the given values in this formula, we get:

$\text{Percent yield}=\frac{12.5g}{26.68g}\times 100=46.8\%$

Thus, the percent yield of water is, 46.8 %

3 0

3 years ago

Ravi cow gives 2 1/4 gallon Milk each day . How much is this in quarts

EastWind [94]

Ooooh, i know this x'D.

There are 4 quarts in a gallon. So 2(Gallons)*4(Number of quarts per gallon) equals 8. Then we have 1/4th left, since there are 4 in each gallon, this 1/4th is a quart. Long explanation short......2*4=8+1=9

9 Quarts.

-Steel jelly

3 0

3 years ago

A board measures 68 inches How many feet is this?

andrew11 [14]

If equals 5.6667 feet

7 0

4 years ago

What is the difrence beetween thermal energy and temperature

bagirrra123 [75]

Answer:

Hope this helps

Explanation:

Thermal energy, which is more commonly known as heat, is a form of energy. It is measured in joules. Thermal energy is an internal energy for a given system. Thermal energy is the cause for the temperature of a system.

Temperature is the measureable thermal property of a system. It is measured in Kelvin, Celsius, or Fahrenheit. The SI unit for temperature measurement is Kelvin.

Differences:

Thermal energy is not a directly measurable quantity whereas temperature is a measurable quantity.

• The temperature of an object can take negative values depending on the unit system used to measure the temperature, but the thermal energy of a system cannot be negative.

• Temperature is measured in Kelvin whereas thermal energy is measured in Joule.

• An object can lose or gain thermal energy in a state transition without changing the temperature of the system.

6 0

4 years ago

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If an atom is found to have an atomic mass equal to 3 times greater than carbon, what is its atomic mass?______ A.M.