1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Snezhnost [94]
3 years ago
12

A sample of g of pure aluminum metal is added to mL of M hydrochloric acid. The volume of hydrogen gas produced at standard temp

erature and pressure is
Chemistry
1 answer:
MArishka [77]3 years ago
3 0

Answer:

V = 11.2L are produced

Explanation:

... <em>Sample of 27g of pure aluminium, 3added to 333 mL of 3.0 M HCl..</em>

Based on the chemical reaction:

2Al(s) + 6HCl(aq) → 2AlC₃(aq) + 3H₂(g)

<em>Where 3 moles of hydrogen are produced when 6 moles of hydrochloric acid reacts with 2 moles of Al.</em>

<em />

To solve this question, we need to determine limiting reactant converting each reactant to moles. With limiting reactant and the chemical reaction we can find moles of hydrogen and its volume at STP (T=273.15K; P=1atm), thus:

<em>Moles Al-Molar mass: 26.98g/mol-:</em>

27g * (1mol / 26.98g) = 1mol of Al

<em>Moles HCl:</em>

333mL = 0.333L * (3mol/L) = 1mol HCl

For a complete reaction of 1 mole of HCl are required:

1mol HCl * (2mol Al / 6mol HCl) = 0.333 moles of Al. As there is 1 mole of Al, Al is in excess and <em>HCl is limiting reactant.</em>

<em />

Moles of Hydrogen produced are:

1mol HCl * (3 moles H₂ / 6 mol HCl) = 0.5moles H₂ are produced.

Using ideal gas law:

PV = nRT

V = nRT/P

<em>Where V is volume</em>

<em>n are moles: 0.5mol</em>

<em>R is gas constant: 0.082atmL/molK</em>

<em>T is absolute temperature: 273.15K</em>

<em>P is pressure: 1atm.</em>

<em />

Solving for V:

V = 0.5mol*0.082atmL/molK*273.15K / 1atm

<h3>V = 11.2L are produced</h3>
You might be interested in
Drag each characteristic to the correct category.
andrew11 [14]

Answer/Explanation

Characteristics of Life Present in Viruses:

  • has a defined boundary - viruses are made up simply of genetic material surrounded by a<u> protein capsid </u>and sometimes a lipid membrane

Characteristics of Life Absent in Viruses:

  • made up of one or more cells - one of the main arguments for why viruses are not living is that they are <u>not cellular</u>
  • uses energy  - this is a tricky one. They don't use or produce their own energy. However, in order to reproduce they do hijack the host cells and <u>steal energy</u> from them in order to reproduce
  • exhibits growth and development - although viruses do <u>reproduce</u>, the individual viral particles do not exhibit growth or development
  • possess internal organisation - other than the fact they ahve genetic material, the inside of a virus does not contain internal organization like a cytosol, instead conssiting of the bare minimum amount of proteins to survive
  • eliminates waste - since they do not have their own metabolism, they have no waste to eliminate
4 0
3 years ago
Suppose you are a chemical engineer working with a client who produces toothpaste.The client wants to add a blue stripe with min
Nikitich [7]

Answer:

Explanation:

I would ask him why would he want to add the blue stripe?

5 0
3 years ago
If a small pig runs 46 meters in 6 seconds, what is the pig's average speed?
Tamiku [17]

Answer:

the pig's average speed is 7 m/s

7 0
2 years ago
What is the mass of a sample of NH3 containing 7.20 x 10^24 molecules of NH3?
leva [86]

Answer:203

Explanation: just have to timez

4 0
3 years ago
Which statement is true?
AleksandrR [38]

Exothermic reaction is where there is release of energy during a reaction

The enthalpy of exothermic reaction is negative

The relation between energy of products, reactants and enthalpy of reaction is

Enthalpy of reaction =  sum of enthalpy of formation of products - sum of enthalpy of formation of reactants .

As enthalpy of reaction is negative, it means the enthalpy of products is less than the enthalpy of reactants  so answer is :

In an exothermic reaction the energy of the product is less than the energy of the reactants.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which landforms are created where cirques meet?
    7·1 answer
  • 8.89 L of hydrogen gas is collected at 38.8 °C. Find the volume the gas will occupy at -39.9 °C if the pressure remains constant
    7·1 answer
  • How many grams of nano3 remain in solution at 20 ∘c?
    13·1 answer
  • The freezing point of diet soda is higher than the freezing point of regular soda, but lower than 0 degrees celcius, the freezin
    6·1 answer
  • I need this ASAP! Thank you!
    10·2 answers
  • Soil is an example of a:<br> a. solution <br> b. heterogeneous mixture <br> c. solid solution
    15·1 answer
  • Why are most solid ionic compounds electrically nonconductive, whereas aqueous solutions of ionic compounds are good conductors
    14·1 answer
  • Which step do you use first to calculate the number of grams of FeCl2 produced when
    8·1 answer
  • The elemental mass percent composition of ascorbic acid (vitamin C ) is 40.92% C , 4.58% H , and 54.50% O . Determine the empiri
    14·1 answer
  • Phosphorous trichloride (PCl3) is produced
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!