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
Molodets [167]
3 years ago
9

What is the amount of ca3(po4)2 that can be prepared from a mixture of 9g of Ca(OH) 2 and 11g of H3po4?

Chemistry
1 answer:
schepotkina [342]3 years ago
6 0
Moles Ca(OH)2 = 12.9 /74.092 g/mol=0.174 
<span>moles H3PO4 = 18.37/98.0 g/mol=0.187 </span>
<span>3 : 2 = x : 0.187 </span>
<span>x = moles Ca(OH)2 needed =0.281 </span>
<span>we have only 0.174 moles of calcium hydroxide so it is the limiting reactant </span>
<span>moles Ca3(PO4)2 = 0.174/3=0.0580 </span>
<span>mass = 0.0580 mol x 310.18 g/mol=18.0 g</span>
You might be interested in
Using the solubility graph place the substances in order from most soluble (#1) to least soluble at 40°C. KNO3, NaClO3,KBr, NaCl
mestny [16]

Answer:

  • NaClO₃ > KBr > KNO₃ > NaCl.

Explanation:

The attached file contains the graph with the solubility curves for the four substances, KNO₃, NaClO₃, KBr, NaCl.

To determine the solubility of each salt at a certain temperature, you read the temperature on the horizontal axis, labeled Temperature (ºC), and move upward up to intersecting the curve of the corresponding salt. Then, move horizontally up to insersceting the vertical axis, labeled Solubility (g/100g of H₂O), to read the solubility.

The higher the reading on the vertical axis, the higher the solubility.

The red vertical line that I added is at a temperature of 40ºC.

The number in blue indicate the order in which the solubility curves are intersected at that temperature:

  • 4: NaCl: this is the lowest solubility
  • 3: KNO₃: this is the second lowest solubility
  • 2: KBr: this is the third lowest solubility
  • 1: NaClO₃: this is the highest solubility.

Thus, the rank, from most soluble to least soluble is:

  • NaClO₃ > KBr > KNO₃ > NaCl.

7 0
3 years ago
What is a cell? ‍♀️
Alexandra [31]

Answer:

Cell is defined as the smallest unit or basic unit of life.

3 0
2 years ago
Read 2 more answers
"the charcoal from a tree killed in the volcanic eruption that formed cedar lake in oregon contained 44.5% of the carbon-14 foun
nalin [4]
The half life of carbon-14 is 5700 years. (Half life is the time taken by a radioactive isotope to decay by half of its original mass). 
Let A₀ be the initial amount of carbon-14 that is found in living matter (t=0 years), to determine when there was 44.5% of A₀ left.
44.5 = 100 × (1/2)^n, where n is the number of half lives
0.5^n = 0.445
    n = log 0.445/log 0.5
    n = 1.168
But 1 half life is 5700 years
Therefore, the number of years will be 5700 × 1.168 = 6658.299725 years
≈ 6658.30 years

3 0
3 years ago
Are all mixtures solutions?​
marin [14]

Answer:

Not all mixtures are solutions. A solution is a specific term that describes an even or homogeneous mixture of a solute, the substance being mixed, in a solvent, the substance that is in a greater amount in which the solute dissolves. All solutions are mixtures because it is two or more substances mixed together.

Explanation:

7 0
3 years ago
Compare and contrast the general properties of alloys and pure metals
murzikaleks [220]
Alloys are used much more than pure metals because they are generally stronger and less likely to react with air or water.

4 0
3 years ago
Other questions:
  • What is the molecular weight of a gas that diffuses through a porous membrane 2.17 times faster than Xe?
    8·1 answer
  • Which particle has the most energy? A) ice Eliminate B) water C) steam D) there is no difference in particle energy
    8·2 answers
  • Fe(OH)3 → Fe2O3 + H2O<br><br>y'all help tbh please ​
    9·1 answer
  • Match the specific enzyme to its class. A. oxidoreductase B. hydrolase C. transferase D. ligase E. lyase aminase
    8·1 answer
  • An object has a velocity of 8m/s and a kinetic energy of 480 j what is the mass of the object
    6·1 answer
  • Exposing a 250 mL sample of water at 20.∘C to an atmosphere containing a gaseous solute at 27.59 kPa resulted in the dissolution
    5·1 answer
  • Why can’t an atom lose or gain a proton
    12·2 answers
  • A sample of oxygen that occupies 2.9 X
    13·1 answer
  • Is a hollow tube that serves as passageway of air into the luns
    9·1 answer
  • How much energy is needed to completely boil a 5.05g sample of water?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!