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3 years ago

In the reaction C5H8 + ______ O2 --> 8H2O + 5CO2, what coefficient should be placed in front of O2 to balance the reaction?

Chemistry

2 answers:

Ne4ueva [31]3 years ago

7 0

C
9O2 --> 18 O

C5H8 + 9O2 --> 8H2O + 5CO2

sweet [91]3 years ago

7 0

Answer:

The answer is c

Explanation:

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A slice of Swiss cheese contains 41 mg of sodium.

larisa86 [58]

Answer:

a. 41 mg equals 0.041 grams.

b. 41 mg equals 0.0014462 ounces

c. 41 mg equals 9.039*10⁻⁵ pounds

Explanation:

You know that a slice of Swiss cheese contains 41 mg of sodium.

a. What is this mass in grams?

Knowing that 1 mg = 10⁻³ g, you can apply the following rule of three: if 1 mg equals 10⁻³ g or 0.001 grams, 41 mg will be equivalent to how much mass in g?

$mass=\frac{41 mg*0.001 g}{1 mg}$

mass= 0.041 grams

41 mg equals 0.041 grams.

b. What is this mass in ounces?

Knowing that 1 mg = 3.5274 * 10⁻⁵ ounces, you can apply the following rule of three: if 1 mg equals 3.5274 * 10⁻⁵ ounces, 41 mg will be equivalent to how much mass in ounces?

$mass=\frac{41 mg*3.5274*10^{-5}ounces }{1 mg}$

mass= 1.4462*10 ⁻³ ounces= 0.0014462 ounces

41 mg equals 0.0014462 ounces

c. What is this mass in pounds?

Knowing that 1 mg = 2.20462 * 10⁻⁶ pounds, you can apply the following rule of three: if 1 mg equals 2.20462 * 10⁻⁶ pounds, 41 mg will be equivalent to how much mass in pounds?

$mass=\frac{41 mg*2.20462*10^{-6}pounds }{1 mg}$

mass= 9.039*10⁻⁵ pounds

41 mg equals 9.039*10⁻⁵ pounds

5 0

3 years ago

A tree is an example

zzz [600]

The answer is A it’s tall

8 0

3 years ago

What areas did japan invade in 1931 and 1937

Yanka [14]

Answer:

china

Explanation:

3 0

3 years ago

What are the coefficients for the reaction _Cl2O5 + _H2O → _HClO3 once it is balanced?

Artemon [7]

Cl2O5+H20-->2HClO3

Just remember to have the same number of each element on both sides of the equation.

5 0

3 years ago

When the following oxidation-reduction occurs, what is the balanced reduction half-reaction after the electrons in both half rea

Lostsunrise [7]

Answer : The balanced reduction half-reaction is:

$3Cu^{2+}+6e^-\rightarrow 3Cu$

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

The given balanced redox reaction is :

$Al(s)+Cu^{2+}(aq)\rightarrow Al^{3+}(aq)+Cu(s)$

The half oxidation-reduction reactions are:

Oxidation reaction : $Al\rightarrow Al^{3+}+3e^-$

Reduction reaction : $Cu^{2+}+2e^-\rightarrow Cu$

In order to balance the electrons, we multiply the oxidation reaction by 2 and reduction reaction by 3 and then added both equation, we get the balanced redox reaction.

Oxidation reaction : $2Al\rightarrow 2Al^{3+}+6e^-$

Reduction reaction : $3Cu^{2+}+6e^-\rightarrow 3Cu$

The balanced redox reaction will be:

$2Al(s)+3Cu^{2+}(aq)\rightarrow 2Al^{3+}(aq)+3Cu(s)$

Thus, the balanced reduction half-reaction is:

$3Cu^{2+}+6e^-\rightarrow 3Cu$

6 0

3 years ago