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elena-s [515]
2 years ago
15

How many grams of CO2 will be produced when 8.50 g of methane react with 15.9 g of O2, according to the following reaction? 
CH4

(g) +2O2(g)→CO2(g) +2H2O(g) 



Chemistry
1 answer:
Aleonysh [2.5K]2 years ago
8 0

The amount of CO_2 that would be produced will be 10.93 g

<h3>Stoichiometric calculations</h3>

From the equation of the reaction, the mole ratio of methane to oxygen is 1:2.

Mole of 8.50 g methane = 8.50/16.04 = 0.53 moles

Mole of 15.9 g oxygen = 15.9/32 = 0.4969 moles

Thus, methane is in excess while oxygen is limiting.

Mole ratio of O_2 and  CO_2  = 2:1

Equivalent mole of  CO_2  = 0.4969/2 = 0.25 moles

Mass of 0.25 moles  CO_2  = 0.25 x 44.01 = 10.93 g

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

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At Jim's auto shop, it takes him minutes to do an oil change and minutes to do a tire change. Let be the number of oil changes h
Juli2301 [7.4K]

Answer:

The total time that Jim needs to change x oil changes and y tire changes is less than 180 min.

The time needed for x oil changes is 12 * x.

The time needed for y tire changes is 18 * y.

The total time is the sum of the above times and needs to be less than 180 that is

12 * x + 18 * y < 180 divide both sides of equation by 6

12/6 * x + 18/6*y < 180/6

2*x + 3*y < 30

2*x < 30 - 3*y divide both sides by 2 to get the inequality for x

x < 30/2 - 3/2*y = 15 - 1.5 y < 15 that is x < = 15

2*x + 3*y < 30

3*y < 30 - 2*x divide both sides by 3 to get the inequality for y

y < 30/3 - 2/3 *x = 10 - 2/3*x < 10 that is y < = 10

Also we can write x + y < x+ 3/2 * y < 15.

Explanation:

Jim's can do not more then 5 oil changes and not more then 10 tire changes or all together she can do not more then 15 total of oil and tire changes.

5 0
3 years ago
A scientist is measuring the rate of an enzyme-catalyzed reaction that produces a red-colored product. as the solution containin
slavikrds [6]
The answer would be A will increase and T <span>will decrease.

The product of this reaction emits red light because it absorbs green and blue light. As the reaction occurs, the concentration of the product increase. This will makes absorbance of green and blue light increases and the solution will become redder.</span>
8 0
3 years ago
Read 2 more answers
Pls help me with this
liubo4ka [24]

Answer:

silver

5/20

=0.25.................

6 0
1 year ago
Read 2 more answers
The molarity of a 2 liter aqueous solution that contains 222.2 grams of dissolved calcium chloride ( CaCl2), expressed with two
sveta [45]

Answer:

The answer to your question is 1 M

Explanation:

Data

Molarity = ?

mass of CaCl₂ = 222.2 g

Volume = 2 l

Process

1.- Calculate the molar mass of CaCl₂

CaCl₂ = 40 + (35.5 x 2) = 40 + 71 = 111 g

2.- Calculate the moles of CaCl₂

                    111g of CaCl₂ ---------------- 1 mol

              222.2 f of CaCl₂  ----------------  x

                      x = (222.2 x 1) / 111

                      x = 222.2 / 111

                      x = 2 moles

3.- Calculate the Molarity

Molarity = moles / Volume

-Substitution

Molarity = 2/2

-Result

Molarity = 1

3 0
3 years ago
Helium gas in a cylinder is under 1.12atm pressure at 25.0C. What will be the pressure if the temperature increases to 37.0C?
Irina18 [472]

Answer:

p_2=1.17atm

Explanation:

Hello!

In this case, considering that the Gay-Lussac's law allows us to relate the temperature-pressure problems as directly proportional relationships:

\frac{p_2}{T_2} =\frac{p_1}{T_1} \\\\

Thus, for the initial pressure and temperature in kelvins the final temperature in kelvins, we compute the final pressure as:

p_2=\frac{p_1T_2}{T_1} \\\\p_2=\frac{1.12atm*310.15K}{298.15K}\\\\p_2=1.17atm

Best regards!

7 0
2 years ago
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