What mass of oxygen is required to completely react with 2 moles of ch4

Answers

Answer 1

Answer: The balanced reaction that describes the reaction between methane and oxygen to produce water and carbon dioxide is expressed CH4 + 2 O2 = CO2 +2H2O. Hence for 2 moles of methane used, 4 moles of oxygen are needed to react completely.

Related Questions

These four ELEMENTS were found in early earth and they make up all living things.A) True B) False The four elements: Hydrogen OxygenCarbon Nitrogen
Which structural adaptation do some plants have to attract pollinators? A.small leaves B.deep roots C.hard bark D.colorful flowers
What is the new boiling point if 25 g of NaCl is dissolved in 1.0 kg of water
one isotope of a metallic element has a mass number of 65 and 35 neutrons in the nucleus. the cation derived the isotope has 28 electrons. write a nuclear symbol for this element
A solution base differs from a solution of an acid in that the solution of a base

An unknown solution has a ph of 8. how would you classify this solution? a. acidic
b. neutral
c. basic
d. there is not enough information to answer the question

Answers

I believe the correct answer from the choices listed above is option C. You would classify this solution as basic since it has the pH of more than 7 which signifies a basic solution. Hope this answers the question. Have a nice day. Feel free to ask more questions.

How many moles in 28 grams of CO2

Answers

In the given question, in 28 grams of $\rm CO_2$ molecule 0.636 moles are present.

A mole is the amount of a substance which comprises exactly $6.022* 10^(23)$ 'elementary entities' of that substance.

To find the number of moles in 28 grams of $\rm CO_2$ , we first need to determine the molar mass of $\rm CO_2$ .

Molar mass of $\rm CO_2$ = 12.01 g/mol (carbon) + 2(16.00 g/mol) (oxygen)

= 44.01 g/mol

Now that we know the molar mass of $\rm CO_2$ , we can use the following formula to calculate the number of moles:

$\rm Number \ of\ moles = \frac {mass \ of \ sample\ (in \ grams) }{ molar\ mass}$

$\rm Number\ of\ moles = \frac {28 \ g }{44.01\ g/mol }$

= 0.636 mol

Therefore, there are 0.636 moles in 28 grams of $\rm CO_2$ .

Learn more about Mole here:

brainly.com/question/30892840

#SPJ6

That is approximately .63620 grams.

When a substance dissolves, it undergoes a chemical change.
a. True
b. False

Answers

False.

Solubility is not a chemical property but rather it is a physical property. A physical property is one that can be observed or measured and does not change the composition or identity of a substance in the process.

When a substances dissolves, this is a change of its physical state and it is mostly reversible. For example, salt can dissolve in water to form a solution called brine. This does not alter the chemical nature of salt. When the water evaporates, salt is left behind in its original state or form. In other words, that was a physical change and it was completely reversible.

New Pressure of gas when temp is 235 k

Answers

There is not much information given so I would have to make certain assumptions. Here are the following:
1. the gas is ideal
2. The gas is in its standard pressure and specific volume. (1atm and 22.4L/mol)
3. There is no initial temperature hence the pressure given the assumptions above is the "new" pressure.

PV=nRT

P= (0.0821L.atm/mol K)(235)/(22.4L/mol)
P=0.861 atm (below atmospheric pressure)

Which process is exothermic?(1) boiling of water
(2) melting of copper
(3) condensation of ethanol vapor
(4) sublimation of iodine

Answers

Answer:

The correct answer is option 3.

Explanation:

Condensationof ethanol vapors is an exothermic process. This is because particles in gaseous has highest energy . Some of this energy gets released when these particles or ethanol vapors condenses into a liquid state where they have less amount of energy in comparison to gaseous state.

$C_2H_5OH(g)\rightarrow C_2H_5OH(l) + Heat$

As we know that exothermic reaction are those reaction in which heat is released into the surroundings.

Where as the other options are example of an endothermic reaction.where heat is absorbed from the surroundings.

Hence, the correct answer is option 3.

Compare the reactivity of alcohols with the length of the R-group.

Answers

The longer the alkyl chain is, the lesser the reactivity of the alcohol and vice versa.

What are alcohols?

Alcohols are substances that possess the -OH functional groups. We know that the reactivity of the alcohol depends on the length of the alkyl group.

Now, the longer the alkyl chain is, the lesser the reactivity of the alcohol and vice versa. This is why the rate of reaction of high molecular weight alcohols is low.

Learn more about alcohols:brainly.com/question/4698220?r

#SPJ2

As you increase the chain of a alcohol, the reactivity decreases. This is due to an increase in disorder and decrease in intermolecular attraction between molecules.

Other Questions

1,000convert in to scientific notation

What is the mass in grams of 0.94 moles of sodium bicarbonate. NaHCO3?

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as acompound. impure substance. mixture. pure substance.

What does w represent