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
iris [78.8K]
2 years ago
12

A 66.4 gram sample of Ba(ClO4)2 3 H2O was heated thoroughly in a porcelain crucible, until its weight remained constant. After h

eating, how many grams of the anhydrous compound remained?
Chemistry
1 answer:
PSYCHO15rus [73]2 years ago
3 0

Answer:

57.2 g

Explanation:

First we <u>convert 66.4 grams of Ba(ClO₄)₂·3H₂O into moles</u>, using its <em>molar mass</em>:

  • Molar mass of Ba(ClO₄)₂·3H₂O = Molar mass of Ba(ClO₄)₂ + (Molar Mass of H₂O)*3
  • Molar mass of Ba(ClO₄)₂·3H₂O = 390.23 g/mol
  • 66.4 g ÷ 390.23 g/mol = 0.170 mol Ba(ClO₄)₂·3H₂O

0.170 moles of Ba(ClO₄)₂·3H₂O would produce 0.170 moles of 0.170 moles of Ba(ClO₄)₂. Meaning we now <u>convert 0.170 moles of Ba(ClO₄)₂ into grams,</u> using the molar mass of Ba(ClO₄)₂:

  • 0.170 mol * 336.23 g/mol = 57.2 g
You might be interested in
Which compound will have the larger rf value on a si02 tlc plate using 10 % ethyl acetate/ hexane as eluent: 3-decanone or 3-dec
Hatshy [7]

The formula of determining the R_f value is:

R_f = \frac{distance travelled by the solute}{distance travelled by the solvent}

where both the distance are measured from the common origin.

10 % ethyl acetate/ hexane means it has 10 % ethyl acetate and 90 % hexane which are non-polar in nature. Hence, the non-polar compound will travel farther in the TLC plate along with the eluent and the polar compound will travel less as they remain attracted to the polar adsorbent SiO_2.

Among 3-decanone and 3-decanol, 3-decanone will have high R_f as it is non-polar.

Among toluene and benzoic acid, toluene will have high R_f as it is non-polar.

Among cyclooctane and cyclooctanone, cyclooctane will have high R_f as it is non-polar.

7 0
3 years ago
Equatio of table perparing for long trip​
mixer [17]

Answer:

I need more information

Explanation:

What's it about?

6 0
3 years ago
7. What must you do before you make a hypothesis?
almond37 [142]

Answer:

Ask a question?

Explanation:

look at the scientific method uwu

6 0
3 years ago
What is the total volume of solution that was dispensed from this burette? before <br><br> after
monitta
Yeah answer should be .6 ml
6 0
3 years ago
Read 2 more answers
How many molecules are in 50 grams of water?
blondinia [14]
The Molar mass of 50g of water is (18.015 g/mol). Hope this helps
3 0
3 years ago
Read 2 more answers
Other questions:
  • How many grams are contained in a 0.893 mol sample of methane, ch4?
    10·1 answer
  • How can I balance this equation __NH4NO3-&gt;__N2+__H2O
    14·1 answer
  • Kinetic molecular theory states particles of an ideal gas are in what type of motion
    6·1 answer
  • URGENT HELP! I dont understand anything of this and this is for tomorrow
    9·1 answer
  • I AM GIVING BRAINLIEST! PLEASEEEEE HELP I NEED HELPPP PLEASEEEE How many atoms of nitrogen in 2.0 mol of dinitrogen monoxide, N2
    5·1 answer
  • Which graph models the equation 3x-4y=12
    9·2 answers
  • What is the mole fraction of NaBr in
    6·1 answer
  • Would the moon phases change if the earth was rotated 90 degrees? If so, how?
    11·1 answer
  • If the pH is 9, what is the concentration of hydroxide ion?
    9·1 answer
  • Diabetes occurs when there is a large amount of sugar in the blood. Which gland is most likely not functioning well enough in a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!