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
Verdich [7]
3 years ago
9

How many moles are in 39.5 grams of Lithium?

Chemistry
2 answers:
Nata [24]3 years ago
8 0

Answer:

5.69

Explanation:

1 gram of lithium is .144 of a mole, since you have 39.5 grams of lithium you can multiply .144 by 39.5 to get an answer of 5.69

Blizzard [7]3 years ago
7 0

Answer:

185.05 g.

Explanation

Firstly, It is considered as a stichiometry problem.

From the balanced equation: 2LiCl → 2Li + Cl₂

It is clear that the stichiometry shows that 2.0 moles of LiCl is decomposed to give 2.0 moles of Li metal and 1.0 moles of Cl₂, which means that the molar ratio of LiCl : Li is (1.0 : 1.0) ratio.

We must convert the grams of Li metal (30.3 g) to moles (n = mass/atomic mass), atomic mass of Li = 6.941 g/mole.

n = (30.3 g) / (6.941 g/mole) = 4.365 moles.

Now, we can get the number of moles of LiCl that is needed to produce 4.365 moles of Li metal.

Using cross multiplication:

2.0 moles of LiCl → 2.0 moles of Li, from the stichiometry of the balanced equation.

??? moles of LiCl → 4.365  moles of Li.

The number of moles of LiCl that will produce 4.365 moles of Li (30.3 g) is (2.0 x 4.365 / 2.0) = 4.365 moles.

Finally, we should convert the number of moles of LiCl into grams (n = mass/molar mass).

Molar mass of LiCl = 42.394 g/mole.

mass = n x molar mass = (4.365 x 42.394) = 185.05 g.

You might be interested in
Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate
MissTica
Yes this is true good job
4 0
3 years ago
All members of the alkene series of hydrocarbons have the general formula:
LenaWriter [7]

CnH2n since the equivalent unsaturation is equal with 1

7 0
3 years ago
Which type of force caused the weight to drop (11) after the rope was cut?
MatroZZZ [7]

Answer:

gravitational force.

8 0
3 years ago
How to differentiate between so3 and so4?​
makvit [3.9K]

Answer:

The difference between sulfate and sulfite is, Sulfate (SO4) has 1 atom of Sulphur and 4 atoms of Oxygen. sulfite (SO3) has 1 atom of sulfur and 3 atoms of Oxygen.

Explanation:

7 0
2 years ago
Calculate the ph of a solution having [OH-] = 8.2 x 10 ^-8M
egoroff_w [7]

Answer:

<h2>6.91 </h2>

Explanation:

To find the pH we must first find the pOH

The pOH can be found by using the formula

pOH = - log [ {OH}^{-} ]

We have

pOH =  -  log(8.2 \times  {10}^{ - 8} )  \\  = 7.086186...

pOH = 7.09

Next we use the equation

pH = 14 - pOH

We have

pH = 14 - 7.09

We have the final answer as

<h3>6.91</h3>

Hope this helps you

8 0
3 years ago
Other questions:
  • Can someone help me understand what 1b is asking and how to answer it?
    6·1 answer
  • The molecular mass of the compound is 132 amu. What is the molecular formula?
    8·1 answer
  • is the following sentence true or false, in undisturb sedimentary rocks, the oldest layers are found on the bottom
    15·1 answer
  • · Discuss 2 faults of the Bohr model.
    7·2 answers
  • After an electric sign is turned on, the temperature of its glass goes from 23.5°C to 65.5°C. The sign’s glass has a mass of 905
    14·2 answers
  • Calculate the pH of a solution whose H3O+ concentration is 2.1 x 10-3 M. Is the solution acidc, basic, or neutral?
    13·1 answer
  • A saturated solution of Ammonium Chloride is dissolved in 100 g of water.
    15·1 answer
  • True or Fase. Every substance has to be classified as either acid or base?
    15·1 answer
  • AUG, the codon that codes for the amino acid methionine is also called a ____ codon (answer choices 1.start 2.Stop 3.Go 4.beginn
    6·1 answer
  • Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound. Answer using three significant f
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!