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
docker41 [41]
2 years ago
5

A 1.167 grams sample of hydrated Nickel (II) Chloride is heated until a constant mass is achieved. The constant mass of the samp

le is .750 grams. What is the formula and name of the hydrate?
Chemistry
1 answer:
svetoff [14.1K]2 years ago
6 0

Answer:

NiCl₂·4H₂O, its name being nickel (II) chloride tetrahydrate.

Explanation:

The constant mass achieved after heating is the mass of anhydrous nickel (II) chloride, NiCl₂. While the mass lost was water.

  • Mass lost = 1.167 g - 0.750 g = 0.417 g

Now we <u>convert 0.750 g of NiCl₂ into moles</u>, using <em>its molar mass</em>:

  • 0.750 g NiCl₂ ÷ 129.6 g/mol = 0.0058 mol NiCl₂

Then we <u>convert 0.417 g of H₂O into moles</u>:

  • 0.417 g H₂O ÷ 18 g/mol = 0.0231 mol H₂O

With the above information we can calculate that the number of H₂O moles is 4 times higher than the number of NiCl₂ moles.

Meaning that <em>the formula of the hydrate is NiCl₂·4H₂O</em>, its name being nickel (II) chloride tetrahydrate.

You might be interested in
5400 L to KL<br> With work??
Gnesinka [82]

Answer:

5.4KL

Explanation:

Divide by 1000

3 0
2 years ago
What is an ideal gas? how many ideal gases are there in the universe?
tiny-mole [99]
Ideal gases are hypothetical gases whose molecules occupy negligible space and have no interactions, and that consequently obeys the gas laws exactly.
Not exactly sure about the amount...
I hope this helps! :)
6 0
3 years ago
Name an allotrope of carbon which has 60 carbon atoms
Annette [7]
Buckminster fullerene C60
5 0
3 years ago
Two aqueous solutions are prepared: 1.00 m Na2CO3 and 1.00 m LiCl. Which of the following statements is true?
svlad2 [7]

Answer:

The Na_{2}CO_{3} solution has a higher osmotic pressure and higher boiling point than LiCl solution.

Explanation:

As concentrations of two aqueous solutions are same therefore we can write:

                                \Delta P\propto i , \Delta T_{b}\propto i and \pi \propto i

where \Delta P, \Delta T_{b} and \pi are lowering of vapor pressure, elevation in boiling point and osmotic pressure of solution respectively. i is van't hoff factor.

i = total number of ions generated from dissolution of one molecule of a substance (for strong electrolyte).

Here both Na_{2}CO_{3} and LiCl are strong electrolytes.

So, i(Na_{2}CO_{3})=3 and i(LiCl)=2

Hence, lowering of vapor pressure, elevation in boiling point and osmotic pressure will be higher for Na_{2}CO_{3} solution.

Therefore the Na_{2}CO_{3} solution has a higher osmotic pressure and higher boiling point than LiCl solution.

7 0
3 years ago
Thirsty Thursday:) post your celebrity crush <br> Or post your favorite drink :)
Nata [24]

Answer:

My celebrity crush is young Keanu Reeves and my favorite drink is matcha tea

Explanation:

7 0
3 years ago
Other questions:
  • What is solubility? If a substance completely dissolves in water, does it have high or low solubility?
    10·2 answers
  • The wavelength of light that has a frenquency of 1.20x10^13s^-1
    9·1 answer
  • Explain, in terms of ions, why the aqueous solution in the cell conducts an electric current.
    12·1 answer
  • A 20.0–milliliter sample of 0.200–molar K2CO3 so­lution is added to 30.0 milliliters of 0.400–mo­lar Ba(NO3)2 solution. Barium c
    7·1 answer
  • A 0.04328 g sample of gas occupies 10.0-mL at 294.0 K and 1.10 atm. Upon further analysis, the compound is found to be 25.305% C
    6·1 answer
  • 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 90 g
    9·1 answer
  • How is the molecule of substance formed​
    12·1 answer
  • Why is Nertic zone particularly rich in living things?
    13·1 answer
  • 12. The reaction 2NO, (g) = N20,(g) reaches equilibrium.
    8·1 answer
  • the actual yield of a certain reaction is 38.0 g while the theoretical yield is 50.0 g calculate the percent yield
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!