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3 years ago

Balance the reaction below C2H4 + _ O2 → _ CO2 + _ H2O

Chemistry

1 answer:

Katarina [22]3 years ago

3 0

Hey there!

C₂H₄ + O₂ → CO₂ + H₂O

First let's balance C.

There are 2 on the left and 1 on the right. So, let's add a coefficient of 2 in front of CO₂.

C₂H₄ + O₂ → 2CO₂ + H₂O

Next let's balance H.

There are 4 on the left and 2 on the right. So, let's add a coefficient of 2 in front of H₂O.

C₂H₄ + O₂ → 2CO₂ + 2H₂O

Lastly, let's balance O.

There are 2 on the left and 6 on the right. So, let's add a coefficient of 3 in front of O₂.

C₂H₄ + 3O₂ → 2CO₂ + 2H₂O

Here is our final balanced equation.

Hope this helps!

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An oxide of nitrogen is 25.9% N by mass, has a molar mass of 108 g/mol, and contains no nitrogen-nitrogen or oxygen-oxygen bonds

Sonja [21]

Answer:

The compound is N2O4

Explanation:

We have certain important pieces of information about the compound;

1) it is an oxide (a binary compound of nitrogen and oxygen)

2) there are no N-N bonds present

3) there are no O-O bonds present

Since it contains only nitrogen and oxygen then nitrogen accounts for 25.9% of the molecule by mass then oxygen should account for (100-25.9) = 74.1% oxygen

Relative atomic mass of oxygen = 16

Relative atomic mass of nitrogen = 14

We now deduce the empirical formula

Nitrogen. Oxygen

25.9/14. 74.1/16

1.85/1.85. 4.6/1.85 (divide through by the lowest ratio)

1 2

Empirical formula is NO2

To find the molecular formula

(NO2)n = 108

(14+2(16))n= 108

46n=108

n= 108/46

n= 2

Therefore molecular formula= N2O4

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3 years ago

What is the <br>formula and valency of <br> thiosulphate

tatuchka [14]

Formula: NA2S2O3. Valency: 2

6 0

3 years ago

Prove that PV = nRT.

qaws [65]

Find your answer in the explanation below.

Explanation:

PV = nRT is called the ideal gas equation and its a combination of 3 laws; Charles' law, Boyle's law and Avogadro's law.

According to Boyle's law, at constant temperature, the volume of a gas is inversely proportional to the pressure. i.e V = 1/P

From, Charles' law, we have that volume is directly proportional to the absolute temperature of the gas at constant pressure. i.e V = T

Avogadro's law finally states that equal volume of all gases at the same temperature and pressure contain the same number of molecules. i.e V = n

Combining the 3 Laws together i.e equating volume in all 3 laws, we have

V = nT/P,

V = constant nT/P

(constant = general gas constant = R)

V = RnT/P

by bringing P to the LHS, we have,

PV = nRT.

Q.E.D

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3 years ago

Consider the following reaction at equilibrium. What effect will increasing the pressure of the reaction mixture have on the sys

8090 [49]

Answer:

Choice d. No effect will be observed as long as other factors (temperature, in particular) are unchanged.

Explanation:

The equilibrium constant of a reaction does not depend on the pressure. For this particular reaction, the equilibrium quotient is:

$Q = \displaystyle \frac{[\mathrm{SO_2\, (g)}]}{[\mathrm{O_2\, (g)}]}$ .

Note that the two sides of this balanced equation contain an equal number of gaseous particles. Indeed, both $[\mathrm{SO_2\, (g)}]$ and $[\mathrm{O_2\, (g)}]$ will increase if the pressure is increased through compression. However, because $\rm SO_2\, (g)$ and $\rm O_2\, (g)$ have the same coefficients in the equation, their concentrations are raised to the same power in the equilibrium quotient $Q$ .

As a result, the increase in pressure will have no impact on the value of $Q\!$ . If the system was already at equilibrium, it will continue to be at an equilibrium even after the change to its pressure. Therefore, no overall effect on the equilibrium position should be visible.

8 0

3 years ago

Does a large ball of aluminum foil have the same properties as a small ball?

dsp73

Answer:

yes

Explanation:

same properties different size

can i have brainliest pls

5 0

3 years ago

Balance the reaction below __ C2H4 + ___ O2 → ___ CO2 + ___ H2O

Balance the reaction below C2H4 + _ O2 → _ CO2 + _ H2O