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3 years ago

When the equation C2H4+O2—>CO2+H2O is balanced using smallest whole numbers, what is the coefficient of the O2?

Chemistry

1 answer:

tamaranim1 [39]3 years ago

7 0

Answer:

The answer to your question is letter C. 3

Explanation:

Unbalanced chemical reaction

C₂H₄ + O₂ ⇒ CO₂ + H₂O

Reactants Elements Products

2 C 1

4 H 2

2 O 3

Balanced chemical reaction

C₂H₄ + 3O₂ ⇒ 2CO₂ + 2H₂O

Reactants Elements Products

2 C 2

4 H 4

2 O 6

The coefficient of Oxygen is three.

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Answer:

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4 years ago

How many moles of water as a gas can be formed 2.45 L

Alex17521 [72]

Answer:

0.11mole

Explanation:

Let us assume that the condition is at standard temperature and pressure(STP);

Given parameters:

Volume of water = 2.45L

Unknown:

Number of moles found in this volume of water = ?

Solution;

At STP;

Number of moles = $\frac{volume of gas}{22.4}$

Input the parameters and solve;

Number of moles of water = $\frac{2.45}{22.4}$ = 0.11mole

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3 years ago

If a shell can hold a maximum of 32 electrons, what is the value of n?

olga2289 [7]

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4 0

3 years ago

Read 2 more answers

Enzymes work by _____. enzymes work by _____. decreasing the potential energy difference between reactant and product adding ene

Anton [14]

The appropriate answer is they decrease the potential energy difference between reactant and product. They do this by bringing products and reactants together at the active site on the enzyme molecule. Enzymes are biological catalysts. They increase the rate of a chemical reaction without being used up in the reaction itself. So one molecule of an enzyme is used many times to catalyze the reaction of other molecules.

7 0

3 years ago

A scooter maintains a pace of 1.45 minutes per mile, with fuel economy of 85 miles per gallon. How many seconds can it travel on

vlada-n [284]

Answer:

281s

Explanation:

Given parameters:

Speed of the scooter = 1.45min per mile

Fuel economy of engine = 85miles per gallon

Quantity of fuel = 145mL

Unknown:

Time of travel with the volume of fuel given = ?

Solution:

To solve this problem, we need to find the distance the fuel will last.

Rate of fuel consumption by the engine = 85miles per gallon

Convert 145mL to gallons;

3785.41mL = 1 gallon

145mL will therefore give $\frac{145}{3785.41}$ = 0.038gallons

So;

Distance covered = 85miles per gallon x 0.038gallons = 3.23miles

From;

Rate of travel = $\frac{time }{distance}$

Time = rate of travel x distance = 1.45 minutes per mile x 3.23miles

Time = 4.7min

1 min = 60s

4.7min = 4.7 x 60 = 281s

6 0

3 years ago