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
Oksi-84 [34.3K]
3 years ago
15

Lithium and nitrogen react in a combination reaction to produce lithium nitride:6Li (s) + N2 (g) â 2Li3N (s)In a particular expe

riment, 4.50-g samples of each reagent are reacted. The theoretical yield of lithium nitride is ________ g.Lithium and nitrogen react in a combination reaction to produce lithium nitride:6Li (s) + N2 (g) 2Li3N (s)In a particular experiment, 4.50-g samples of each reagent are reacted. The theoretical yield of lithium nitride is ________ g.A) 3.76B) 22.6C) 4.53D) 7.52E) 11.2
Chemistry
1 answer:
Mademuasel [1]3 years ago
3 0

Answer:

The answer to your question is letter D

Explanation:

Data

mass of Li = 4.5 g

mass of N₂ = 4.5 g

limiting reactant = ?

Reaction

                         6Li (s)   +   N₂ (g)   ⇒  2Li₃N

This reaction is balanced

Process

1.- Calculate the molecular mass of the reactants

Li = 7 x 6 = 42g

N = 14 x 2 = 28 g

Calculate the limiting reactant using proportions

Theoretical proportion    Li / N = 42 / 28 = 1.5

Experimental proportion   Li/N  = 4.5/4.5 = 1

As the experimental proportion was lower than the theoretical, the limiting reactant is Lithium

2.- Calculate the theoretical yield of Li₃N

                        42 g of lithium --------------  70 g of Li₃N

                        4.5 g of lithium -------------   x

                        x = (4.5 x 70) / 42

                        x = 315 / 42

                     <u>   x = 7.5 %</u>

You might be interested in
I’m having hard time to understand can someone answer it and explain it
tekilochka [14]

Number #2 is joule

In the SI system the unit of heat is the joule. The calorie was defined so that the heat capacity of water was equal to one.The heat capacity of a substance is the amount of heat required to raise the temperature of a defined amount of pure substances by one degree.

Number #3 is Endothermic

Why? I can't explain. I Just left class where they were just explaining that.

7 0
3 years ago
How many moles of LiOH are needed to react completely with 25.5 g of CO2
LekaFEV [45]

Answer:

3.18 mol

Explanation:

2LiOH+CO_{2}-> Li_{2}CO_{3} +H_{2}O

n(CO2) = mass/ Mr.

             = 25.5 / 16

             = 1.59 mol

As per the equation above,

n(LiOH) : n(CO2)

     2      :    1

∴  3.18   :  1.59

     

3 0
3 years ago
What are the 5 areas of chemistry
shepuryov [24]
The 5 main branches of chemistry are physics, analytical, biochemistry, organic chemistry, and inorganic chemistry.
7 0
3 years ago
3 points Given 0.65 moles KNO3: (a) Convert to grams (b) Convert to particles. <br>​
Vlad [161]

Answer: Convert to grams

Explanation:

8 0
3 years ago
What did Ernest Rutherford s gold foil experiment demonstrate about atoms?
mote1985 [20]
Rutherford performed gold foil experiment to understand that how negative and positive particles could Co exist in an atom. He bombarded alpha particles on a 0.00004 cm thick gold foil.

He proposed a planetary model of the atom and concluded following results and demonstrated that,
1. An atom produces a line spectrum.
2. An Electron revolves around the nucleus without any orbits.
3. Since most of the particles passed through the foil undeflected it means that most of the volume occupied by an atom is empty.
4. An Atom as a whole is neutral.
5. The deflection of few particles on the foil suggested that there is center of positive particles in an atom called the nucleus of the atom.
6. The complete rebounce of few particles on the gold foil suggested that the nucleus is very dense and hard.
6 0
4 years ago
Other questions:
  • Please help :) Surface currents are caused by ______ . A. differences in water temperature B.high salinity C.differences in dens
    11·2 answers
  • What kind of nuclear reaction is seen in 236 92 U - 144 36 Kr 3p1n A; nuclear fission B; Beta decay C; Alpha decay D; Nuclear fu
    13·1 answer
  • Scoring Scheme: 3-3-2-1 When you use the half reaction method to balance the redox reaction between one mole of NBS and ascorbic
    9·1 answer
  • (i need help please ill give brainliest if u get it right)* the questions and everything are in the picture below*
    14·1 answer
  • Whag is the answer. please i need help​
    6·1 answer
  • I need help with this question its not hard at all im just not sure
    12·1 answer
  • What is a common use of nitric acid?
    12·2 answers
  • Is it possible for cells to overcome the effects of alkylating agents? how?
    15·1 answer
  • 2. Which statement about bonding is correct? (1 point)
    10·2 answers
  • Name a compound that made from a covalent bond and name it’s use please!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!