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
kondor19780726 [428]
4 years ago
15

2HCl + Mg mc031-1.jpg MgCl2 + H2

Chemistry
2 answers:
elena-14-01-66 [18.8K]4 years ago
6 0
Percentage Yield = mass of Actual Yield/mass of Theoretical Yield*100%

Balanced equation is: Mg+2HCl=MgCl2 + H2Showing that if Mg is not a limiting factor then 2 moles of HCl on complete reaction liberate 1 mole of Hydrogen
1 mole of HCl=35.5g, 40g=xX= 40/35.5= 1.127mole2 moles of HCl = 1 moles of Hydrogen1.127=XX=1.127/2 = 0.56
Hope this helped :)
strojnjashka [21]4 years ago
4 0

Answer:

1.10 g H₂

Explanation:

The reaction is

2HCl + Mg → MgCl₂ + H₂

An excess of magnesium metal means that the limiting reactant is HCl, so we use the mass of HCl given by the problem to calculate how many grams of H₂ are produced.

In order to make this calculation we need to keep in mind the molar mass of HCl, of H₂, and the reaction stoichiometry:

40.0 g HCl * \frac{1molHCl}{36.5g} *\frac{1molH_{2}}{2molHCl}*\frac{2g}{1molH_{2}}= 1.10 g H₂

You might be interested in
A. What evidence have you discovered to explain why air flows? B. What evidence have you discovered to explain why Earth has glo
Marina86 [1]
Water among the coast can be several degrees colder in different areas because the water is replenished and being pushed off the coast so these cooler and nutrient-rich waters rise from a depth of 50-300 meters to the surface of the ocean
7 0
3 years ago
What does the kinetic theory explain?
olya-2409 [2.1K]
I believe the correct answer from the choices listed above is the third option. The kinetic theory explains that heat is due to the motion of molecules. Temperature is the measurement used to measure heat and is directly proportional to the average kinetic energy of the molecules.  
6 0
3 years ago
Read 2 more answers
Select the phrase that completes each statement. • Honey is . • Grape juice is • Sand on the beach is . • A mixture of carbon di
Harman [31]

Answer:

a mixture and  solution  

•      a mixture and a solution  

•      a mixture but not a solution  

•       a mixture and a solution  

•  mixture and a solution

Explanation:

5 0
4 years ago
Which statements describe a closed circuit? Check all that apply.
ehidna [41]

Answer:

The answers are options A, D and E

Explanation:

Shut circuit implies a total electrical association around which flow streams or courses. When you have a progression of electrical wires interfacing with one another and finishing a circuit so flow goes from one end of the hover to alternate, this is a case of a shut circuit. A broken wire or an "open" (off) switch both leave holes in a circuit keeping electrons from going from one side of the power source to the next. In this way, electrons won't stream. This circumstance is called an open circuit. A shut (on) switch implies that the circuit through the switch is connected.The meaning of an open circuit is a broken way for an electrical flow because of an open switch or frayed wire. A case of an open circuit is a string of electric lights that don't work on the off chance that one globule goes out. YourDictionary definition and utilization precedent. Shut circuit implies an entire electrical association around which flow streams or circles. When you have a progression of electrical wires associating with one another and finishing a circuit so flow goes from one end of the hover to alternate, this is a case of a shut circuit.

7 0
4 years ago
Read 2 more answers
What factors does the climate include?
ale4655 [162]

Answer: amount of precipitation, average temperature

7 0
3 years ago
Read 2 more answers
Other questions:
  • Consider three 1 L flasks at STP. Flask A contains NH3 gas, flask B contains NO2 gas, and flask C contains N2 gas. Which contain
    11·1 answer
  • The following phase diagram shows how a catalyst affected the rate of a reaction.
    5·2 answers
  • Which are all renewable resources?
    9·2 answers
  • Suppose your professor handed you a test tube with 2.0 mL of an E. coli broth culture I it and told you to make a 10^(-1) diluti
    7·1 answer
  • HOW separate water mixture + mothballs?
    7·1 answer
  • Which two values will a spontaneous reaction have? +Eoreduction and +Eocell -∆G and +Eocell +∆G and +Eocell +∆G and -Eocell -∆G
    13·2 answers
  • A solution of CaCl 2 in water forms a mixture that is 42.0 % calcium chloride by mass. If the total mass of the mixture is 839.6
    11·1 answer
  • How many moles of nitrogen gas are in a flask with a volume of 0.25 L at a pressure of 2.96 atm and a temperature of 300 K
    7·1 answer
  • Why is monatomic compound nonsense?
    7·1 answer
  • What are synthetic elements
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!