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
lukranit [14]
4 years ago
13

How many atoms are in 1.4 mol of phosphorus trifluoride (PF3)?

Chemistry
2 answers:
harkovskaia [24]4 years ago
8 0
NA = 6.022*10^23
number of atoms = number of moles * avogadros number
number of atoms = <span>6.022*10^23 * 1.4 moles * 4 atoms / molecules of PCl3
Number of atoms = 3.37*10^23 atoms.</span>
siniylev [52]4 years ago
4 0

It's D 3.37 x 10^24 Round up

You might be interested in
Azithromycin suspension dosing is 10 mg/kg/d and is available in 200mg/5ml doses. how many ml would a 25kg child receive daily?
bekas [8.4K]
The answer to this question is 6.25ml

To answer this question, you need to calculate the azithromycin drug doses for this patient. The calculation would be: 25kg * 10mg/kg/d= 250mg/d

Then multiply the doses with the available drug. It would be:
250 mg/d / (200mg/5ml)= 6.25ml/d
8 0
4 years ago
N a rate law, the rate constant, k, depends on which condition?
Tanya [424]
In a rate law constant K(kt), Depends only on Temperature.


Answer: would be Temperature, if temperature is constant, then rate law is constant.





Hope that helps!!!

6 0
4 years ago
Suppose that the mixture in problem 4 is at 15 OC, where the pure vapor pressures are 12.5 mmHg for water and 32.1 mmHg for etha
EleoNora [17]

Answer:

Explanation:

Since we are not given the mole fraction of ethanol and water; we will solve this theoretically.

Using Raoult's Law:

P_A = (P_o)_A*X_A

For water:

(P)w = P_o \times \text{mole fraction of water}

where P_o of water = 12.5 mmHg

Then, the vapor pressure of water:

(P)w = 12.5 \ mmHg \times \text{mole fraction of water}

For ethanol:

P_E = P_o \times \text {mole fraction of ethanol}

and the P_o of ethanol = 32.1 mmHg

Then, the vapor pressure of ethanol:

P_E = 32.1 \ mmHg \times \text {mole fraction of ethanol}

The total vapor pressure T_P = P_W + P_E

The total vapor pressure = (12.5 \ mmHg \times \text{mole fraction of water}) + (32.1 \ mmHg \times \text {mole fraction of ethanol})

3 0
3 years ago
What are all of the living and nonliving things in an area called?
NARA [144]
Living: biotic

Non-loving: abiotic
7 0
3 years ago
Read 2 more answers
Mushrooms, yeast, and mold are part of the Kingdom ____________.
Anit [1.1K]

Answer:

fungi

Explanation:

because they are heterotrophs

7 0
4 years ago
Other questions:
  • It takes 486.0 kJ/mol to convert sodium atoms to Na+ ions. Sodium atoms absorb and emit light of wavelengths 589.6 and 590.0 nm.
    12·1 answer
  • If you could spend a billion dollars (1 x 10 to the 9th power) per second, how many years would it take to spend one mole of dol
    13·1 answer
  • Which element has the lowest electronegativity? Calcium(Ca) Gallium(Ga) Selenium(Se) Bromine(Br)
    6·1 answer
  • 3. Which of the following substances is NOT an electrolyte? (1 point)
    7·1 answer
  • How do you prove law of conservation of mass??
    15·1 answer
  • Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben’s observation?
    6·1 answer
  • Which species is the conjugate base of H2SO3
    14·1 answer
  • A scientist wants to replace the letters on the diagram with the features they represent. Which question would BEST help a scien
    9·1 answer
  • Which model BEST represents the current view of the solar system?
    14·2 answers
  • How many molecules of N2O gas are in 250 L at STP?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!