CHEMISTRY COLLEGE

6 CO2 + 6 H2O
How many atoms of each element are in
the equation?
6 CO2 + 6 H2O How many atoms of each - 1

Answers

Answer 1
Answer:

Answer:

There are 6 Carbon dioxides, and 6 waters, but there are 6 carbons, 18 oxygens, and 12 hydrogens.

Explanation:
Answer 2
Answer:

Answer:

6 carbon atoms

18 oxygen atoms

12 hydrogen atoms

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If 6.81 mol of an ideal gas has a pressure of 2.99 atm and a volume of 94.35 L, what is the temperature of the sample?

Answers

Answer:

504.57 K.

Explanation:

From the question given above, the following data were obtained:

Number of mole (n) = 6.81 moles

Pressure (P) = 2.99 atm

Volume (V) = 94.35 L

Gas constant (R) = 0.0821 atm.L/Kmol

Temperature (T) =.?

Using the ideal gas equation, the temperature of the ideal gas can be obtained as follow:

PV = nRT

2.99 × 94.35 = 6.81 × 0.0821 × T

282.1065 = 0.559101 × T

Divide both side by 0.559101

T = 282.1065 / 0.559101

T = 504.57 K.

Thus, the temperature of the ideal gas is 504.57 K.

The balanced combustion reaction for C 6 H 6 C6H6 is 2 C 6 H 6 ( l ) + 15 O 2 ( g ) ⟶ 12 CO 2 ( g ) + 6 H 2 O ( l ) + 6542 kJ 2C6H6(l)+15O2(g)⟶12CO2(g)+6H2O(l)+6542 kJ If 7.300 g C 6 H 6 7.300 g C6H6 is burned and the heat produced from the burning is added to 5691 g 5691 g of water at 21 ∘ 21 ∘ C, what is the final temperature of the water?

Answers

Answer: The final temperature of the water is 33.85^(o)C.

Explanation:

We know that molar mass of C_(6)H_(6) is 78 g/mol. And, the amount of heat produced when 2 mol of C_(2)H_(6) burns is 6542 KJ.

This means that,

   78 * 2 = 156 g of C_(2)H_(6) burns, heat produced is 6542 kJ.

Therefore, heat produced (Q) by burning  7.3 g of C_(6)H_(6) is as follows.

               (6542 * 7.3 g)/(156 g)

              = 306.13 kJ

or,           = 306130 J      (as 1 KJ = 1000 J)

For water, mass is given as 5691 g and specific heat capacity of water is 4.186 J/g^(o)C.

So, we will calculate the value of final temperature as follows.

            Q = m * C * (T_(f) - T_(i))

  306130 J = 5691 g * 4.186 J/g^(o)C * (T_(f) - 21)^(o)C

       (T_(f) - 21)^(o)C = (306130 J)/(23822.53 J/^(o)C)

          T_(f) = 12.85 + 21

                      = 33.85^(o)C

Thus, we can conclude that the final temperature of the water is 33.85^(o)C.

What mass of CO2 (in kilograms) does the combustion of a 16-gallon tank of gasoline release into the atmosphere? Assume the gasoline is pure octane (C8H18) and that it has a density of 0.70 g/mL.Express your answer in kilograms to two significant figures.

Answers

Mass of CO₂ = 1.3 x 10⁵ kg

Further explanation

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2C₈H₁₈ + 25O₂⇒ 16CO₂ + 18H₂O

16 gallon = 60566,6 ml

  • mass C₈H₁₈ :

\tt mass=\rho* V\n\nmass=0.7* 60566.6=42396.62~g

  • mol C₈H₁₈ :

\tt MW=114.232~g/mol\n\nmol=(42396.62)/(114.232)=371.145

  • mol CO₂ :

\tt (16)/(2)* 371.145=2969.159

  • mass CO₂ :

\tt =2969.159* 44(MW~CO_2)=130642.996~g=1.3* 10^5~kg

Jesim wants to help Nancy understand the movement that happens during one Earth year, Jassim holds a small globe representing Earth, and Nancy holds a large ball representing the Sun. What should Jessim do to showNancy what happens during one Earth year?
Jessim should not move except to slowly spin the globe
Jesim should slowly spin the globe and walk away from Nancy
Jessim should have Nancy walk around him while spinning the ball
Jessim should spin the globe quickly while walking in a circle around Nancy

Answers

the answer is D jessim should spin the glove quickly while walking in a circle around nancy.

Answer:

The answer is D jessim should spin the glove quickly while walking in a circle around nancy.

Explanation:

What do lactate dehydrogenase, aspartate aminotransfcrase, and creatine kinase all have in common? a. they all are allosteric enzymes b. they are all zymogens c, they are all used to diagnose medical conditions d. they all function at abeornally high temperatures

Answers

Answer:

c. they are all used to diagnose medical conditions

Explanation:

Lactate dehydrogenase, aspartate aminotransfcrase, and creatine kinase all are used to diagnose medical conditions.

Please answer this question

Answers

Answer:

I'm not an expert at this, but I assume its mercury.
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