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
maks197457 [2]
3 years ago
9

A different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity

from the results of laboratory analysis that the student could use to determine whether the sample was pure.
Chemistry
1 answer:
grandymaker [24]3 years ago
8 0

Answer:

Mass of Ca in sample, Mass of Br in sample, Number of moles of Ca in sample, Number of moles of Br in sample, Mass or moles of element other than Ca or Br in sample

Explanation:

The AP Classroom will not count your answer to this question as correct unless it includes at least one of the answers listed above. If you say that theanswer to this question is density, it will be marked as incorrect, I found that out the hard way when I used the answers that brainly gave me.

Good luck,

I applaud you for using the sources avalible to you, which is /definetly not/ cheeting.

You might be interested in
Why do we use the mole concept ??
Kaylis [27]

Answer:

Here

Explanation:

Chemists need the mole concept to bridge the gap between the microscopic world of atoms to the macroscopic world of humans. As you know, the molecular level consists of particles that are invisible to us.

7 0
3 years ago
Read 2 more answers
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4
san4es73 [151]

Answer:

83.20 g of Na3PO4

Explanation:

1 mole of Na3PO4 contains 3 moles of Na+.

Mole of Na ion to be prepared = Molarity x volume

                 = 0.700 x 725/1000

                     = 0.5075 mole

If 1 mole of Na3PO4 contains 3 moles of Na ion, then 0.5075 Na ion will be contained in:

           0.5075/3 x 1 = 0.1692 mole of Na3PO4

mole of Na3PO4 = mass/molar mass = 0.1692

Hence, mass of Na3PO4 = 0.1692 x molar mass

                                     = 0.1692 x 163.94

                                        = 83.20 g.

83.20 g of Na3PO4 will be needed.

3 0
3 years ago
Read 2 more answers
Please help I need the awnser quick will give brain to first to awnser
gizmo_the_mogwai [7]
Possibly decomposition but not sure
7 0
3 years ago
Read 2 more answers
How many grams are equivalent to 1.80x10-4 tons?
zloy xaker [14]
Do you want the estimated answer or the exact answer?

6 0
3 years ago
A student finds that the water's temperature went from 18oC to 38oC. Calculate how many calories are in the peanut.
Norma-Jean [14]

Answer:

567 calories.

Explanation:

There 567 calories in 100 grams of peanut. In 100 grams of peanut, 49 gram is the fat, 26 grams of protein, 16 grams of carbohydrates, Sodium is 18 mg, Potassium is 705 mg. Calcium is present in peanut about 9%, Iron is 25% , Vitamin B-6 is 15%  and Magnesium is 42% of their total weight. Oil content is high in the Peanut so this is the reason for high calories in peanut. It is a good source of proteins and potassium.

4 0
3 years ago
Other questions:
  • A volatile liquid is one that ______?
    13·1 answer
  • how was it possible that Mendeleev was able to predict the properties of elements that no one knew about
    12·1 answer
  • Before allowing an employee to enter an excavation at least four feet deep in must be tested for oxygen deficiency and toxic fum
    14·2 answers
  • Consider 1-bromopropane (CH3CH2CH2Br) (a) Draw a Newman projection for the conformation in which !CH3 and !Br are anti (dihedral
    12·1 answer
  • What is the approximate depth of the calcite compensation depth (CCD) in the ocean? View Available Hint(s) What is the approxima
    15·1 answer
  • 73.5 grams C, 4.20 grams H, and 72.3 grams Cl. What is the percent composition of each element in this compound?
    12·1 answer
  • The change in entropy, Δ????∘rxn , is related to the the change in the number of moles of gas molecules, Δ????gas . Determine th
    14·1 answer
  • What is mass in g of 22 moles of copper?
    11·1 answer
  • Which description accurately represents a water molecule? (1 point)
    8·2 answers
  • High-temperature superconducting oxides hold great promise in the utility, transportation, and computer industries.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!