CHEMISTRY HIGH SCHOOL

If 20 atoms of aluminum react with 45 molecules of chlorine gas, which reactant is limiting and how many more atoms/molecules would be required to use up all the reactants?

Answers

Answer 1

Answer:

Explanation:

$2Al+3Cl_2\rightarrow 2AlCl_3$

According to reaction, 2 atoms of aluminum gas reacts with 3 molecules of chlorine gas.

Then 20 atoms of aluminum will react with :

$(3)/(2)* 20=30 molecules$ of chlorine

Aluminum is a limiting reagent.

Molecules of chlorine left unreacted: 45 - 30 molecules = 15 molecules

Then 15 molecules of chlorine gas will react with :

$(2)/(3)* 15=10 atoms$ of aluminum

10 more atoms of aluminum will required to use up all chlorine.

Answer 2

Answer: Al:ch2 an molar ratio.

2:3 and an x. X is 30. 20/2 = 10 so an answer is

45/3 = 15. Both ratios are used

45 - 30 = 15 CL2 left.

Your Welcome :)

Related Questions

Process in which water vapor turns to liquid
A body moving with a velocity of 20 m/s begins to accelerate at 3 m/s2. How far does the body move in 5 seconds?A. 137.5 m B. 196 m C. 260 m D. 162.5 m
How is the size of the mineral grains affected by the rate at which molten rock material cools?
What is scientific consensus?O a new scientific idea that was confirmed by the original researcheran idea that has been changed due to new informationO a general agreement among scientists about a scientific ideathe understanding that knowledge in a particular area can be uncertain
Which process uses energy to combine inorganic molecules to synthesize organic molecules

What happend if NH3+ HJ

Answers

Are you sure you copied that down correctly? I know what NH3 is but HJ I am comming up blank on. The only thing HJ I know is hebdojoule which is unit system.
Are you doing chemical balancing?

What volume of oxygen at STP is required for the complete combustion of 100.50 mL of C2H2?

Answers

The given substance combusts following the reaction:

C2H2 + (5/2)O2 -> 2CO2 + H2O

Assume C2H2 is an ideal gas. At STP, 1 mol of an ideal gas occupies 22.4 L. Given 100.50 mL of C2H2, this means that there is 4.4866 x 10^(-3) mol. Combusting 1 mol of C2H2 consumes (5/2) mol of O2, then combusting the given amount of C2H2 consumes 0.01121 mol of O2. At STP, this amount of O2 occupies 251.25 mL.

Answer: 251.25 ml

Explanation: $2C_2H_2(g)+5O_2(g)\rightarrow 4CO_2+2H_2O$

According to Avogadro's law, 1 mole of every gas occupies 22.4 L at Standard temperature and pressure (STP).

2 moles of $C_2H_2(g)$ occupy = $2* 22.4L=44.8L=44,800ml$

5 moles of $O_2(g)$ occupy = $5* 22.4L=112L=112000ml$

Thus 44800 ml of $C_2H_2(g)$ reacts with 112000 ml of $O_2(g)$ at STP

100.50 ml of $C_2H_2(g)$ reacts with = $(112000)/(44800)* 100.50=251.25 ml$ of $O_2(g)$ at STP.

After the food has been chewed and lubricated, it is pushed by the tongue into the___________.larynx
pharynx
stomach

Answers

The answer is pharynx

Pharynx is cone-shaped passageway leading from the oral and nasal cavities in the head to the esophagus and larynx. The pharynx chamber serves both respiratory and digestive functions

After the food has been chewed and lubricated, it is pushed by the tongue into the Pharynx

What is the term for a solid substance that is composed of minerals?

Answers

A rock may consist of one type of mineral or may be an aggregate of two or more different types of minerals, spacially segregated into distinct phases. Some natural solid substances without a definite crystalline structure, such as opal or obsidian, are more properly called mineraloids.

While out on a hike, you find an unknown mineral. how would test the mineral to find out what it is?

Answers

You can find out what mineral it is when you bring it with you after you hike. You can bring it to a laboratory that specializes on mineral rocks for testing. They know what they should do to find out what it is. Hope this helps. Have a nice day.

Earth’s layers are determined by their physical properties and chemical composition. In the lesson, you learned about each of Earth’s layers, what the layers are made of, and why they are important to the Earth. In the space below, write about how the atmosphere may be classified. Would it be part of the lithosphere, or a separate layer? Explain your answer.

Answers

Answer:

The Atmosphere Is a separate layer And Also could be classified as the Closest layer

Explanation:

Other Questions

Which of the following pieces of laboratory equipment is not directly used to make measurements?a. test tubeb. graduated cylinderc. rulerd. thermometer

Two girls are adding sugar to tea. one girl is stirring her tea and the other is not. the sugar willA. dissolve faster in the tea that is not stirred B. dissolve at the same rate in both glasses C.dissolve faster in the tea being stirred D. not dissolve because stirring forms colloids

Which of these elements has four total electrons in its outer p orbitals? A) barium (Ba) B) nitrogen (N) C) silicon (Si) D) sulphur (S)

If a sample of a gas at 25.2oC has a volume of 536 mL at 0.838 atm, what will its volume be if the pressure is increased to 0.937 atm? A) 477.78 mL B) 563.21 mL C) 503.88 mL D) 613.52 mL