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In which equation is carbon dioxide a product?
Group of answer choices

CH4 + 2O2 --> CO2 + 2H2O

CO2 --> C + O2

2H2O --> 2H2 + O2

6CO2 + 6H2O --> C6H12O6 + 6O2

Answer:

social studies

Explanation:

Answer:

genetic engineering !! :)

Explanation:

also, i love the pfp <3

Answer:

D) The enthalpy of reaction does not depend on the steps taken in the reaction.

Explanation:

In my study guide, it says, "Hess's law states that the enthalpy of a reaction does not depend on the path."

hope this helps~

Answer:

question 6: winter solstice

question 7: rotation is when an object spins around its axis, revolution is when an object travels in a path around another

question 8: the rotational period is equal to the period of revolution for the moon

question 10: true

Answer:

Question 6:  winter solstice

Question 7: rotation is when an object spins around its axis,

revolution is when an object travels in a path around another

Question 8: the rotational period is equal to the period of revolution for the moon

Question 10: true

Explanation:

I took the test its right

Answer: 8,577.50

Explanation: subtract final temp from initial temp = 23.2 the multiply by grams = 5498.4 then multiply by J = 8,577.504

Answer:

6 moles of CO₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Finally, we shall determine the number of mole of CO₂ produced by the reaction of 2 moles of C₃H₈. This can be obtained as follow:

From the balanced equation above,

1 mole of C₃H₈ reacted to produce 3 moles CO₂.

Therefore, 2 moles of C₃H₈ will react to produce = 2 × 3 = 6 moles of CO₂.

Thus, 6 moles of CO₂ were obtained from the reaction.

Answer:

[C₆H₁₂O₆] = 0.139 M

Explanation:

Molarity si defined as a sort of concentration. It indicates the moles of solute that are contained in 1 L of solution.

We can also say, that molarity are the mmoles of solute contained in 1 mL of solution.

For this case, the solute is sugar (glucose). Let's determine M (mmol/mL)

(3.95 g . 1mol / 180g) . (1000 mmol / 1mol) / 158 mL

We determine moles, we convert them to mmoles, we divide by mL

M = 0.139 M

Moles = 3.95 g . 1mol / 180g → 0.0219 mol

We convert mL to L → 158 mL . 1L/1000mL = 0.158L

M = 0.0219 mol / 0.158L = 0.139 M

Answer:

the percentage yield of Cu(NO3) 2 is 40%

Answer:

It is a chemical change

Explanation:

Melting of wax is temporary and wax can settle again on cooling and turns into a solid. ... Hence it is a chemical change.

Answer:

physical

Explanation:

the wax is changing it's physical state by becoming a liquid, it isn't changing it's chemical makeup

1.00mol is the correct answer

Answer:

Potassium

Explanation:

In group one of the periodic table both the melting and the boiling points usually decrease down the group.

Now, down the group, it's lithium that comes first, then sodium, then potassium.

Thus, among the 3, potassium is furthermost down the group by virtue of the factor it has the highest atomic number.

Therefore, we can say that potassium has the lowest boiling point among the 3.

Answer:

28.82 mL

Explanation:

This is about gases laws, in this case about  Charles Gay Lussac.

At constant pressure the volume is proportional to the T°.

V₁ / T₁ =  V₂ /T₂

42.1 mL / 371K = V₂ /254K

(42.1 mL / 371K) . 254K

V₂ = 28.82 mL

In conclussion:

As T° was decreased, the volume also decreased too.

Answer:

1 HBr + 1 KOH -> 1 KBr + 1 H2O

Explanation:

Answer:

The reactants are on the left of the arrow, the products are on the right.

Explanation:

Reactants are the substances that exist before the chemical reaction takes place. When writing a chemical reaction or equation, they are found on the left of the arrow. They react to form new substances, which are known as the products. The products are found to the right of the arrow in the reaction.

Answer:

A

Explanation:

I don't know how to say how I got it.

Answer:

d

Explanation:

the orbits of the planets in our circular elliptical and circular

Answer:

76%

Explanation:

Actual yield = 38.0 g

Theoretical yield = 50.0 g

Percentage yield = ?

The relationship between these quantities is given as;

Percent yield = Actual yield / Theoretical yield   *  100%

Percent yield = 38 g / 50 g    *  100 %

Percent yield = 0.76  *  100 % = 76%

Answer:

The correct answer is 2.33g of [tex]H_{2}O[/tex], A

Explanation:

We can use basic stoich to get this question.

To start, lets convert our grams to moles in order to use our equation. 5.38g of [tex]O_{2} = (\frac{5.38}{2*15.999}) moles = 0.168136[/tex] moles.

We then can use our molar ratio of 13:10. Simply divide by our molar ratio in order to go from moles of [tex]O_{2}[/tex] to moles of [tex]H_{2}O[/tex]. This gets us 0.129335 moles of [tex]H_{2}O[/tex].

Now lets convert to grams of [tex]H_{2}O[/tex] by multiplying by the molar mass of [tex]H_{2}O[/tex]. [tex].129335*(1.008*2+15.999) = 2.32997g[/tex] of [tex]H_{2}O[/tex]

Answer:

Rabbit

Explanation:

I said rabbit because the snake feeds off the rabbit and that's where he gets his energy from. If the question asked you what is the primary source of energy in this food chain then the answer would be the sun. Since the question only asks you about the snake then the rabbit is the answer.

Hope this helps!

Answer:

b i think

Explanation:

1.7960L

Explanation:

the mass of the gas is constant in both instances

pv/T=constant(according to pv=nRT)

745mmHg*2L/298K=760mmHg*v/273K

v=1.7960L

Answer:

hlo

how r u ?

hindi-kya hal ?

Answer:

D. to predict the effects of human population on the supply of natural resources

Explanation:

From the available graph, it can be seen that Natural resources and human population are directly proportional to each other. As the human population increases, the natural resources decreases, until they both finally meet up.

Hence, in this case, the correct answer is that the role of science in this study is "to predict the effects of human population on the supply of natural resources."

Answer:

B. Nuclear energy

Explanation: