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
svetlana [45]
3 years ago
7

How many moles are in 1.20 x 10^21 atoms of Phosphorus?

Chemistry
1 answer:
Ludmilka [50]3 years ago
8 0

Answer:

You would get 19.969 moles

Explanation:

You might be interested in
Which total mass is the smallest?
andreev551 [17]
The mass of electrons, protons, and neutrons:
electrons 9.10938291*10^-31 kg
protons 1.67262178*10^-27 kg
neutrons 1.6749*10^-27 kg
the mass of electrons is way smaller than both, the mass of protons and neutrons
therefore, 1) the mass of 2 electrons is the smallest
8 0
3 years ago
Can someone easily explain to me how to do reaction rates?
iVinArrow [24]

Explanation:

Reaction rate is a measure of speed of a chemical reaction.

Usually, based on rates, reactions can be divided into two parts:

  • Slow reactions which usually takes a long time.
  • Fast reactions which takes place completely in seconds or microseconds.

Reaction rate can be defined as a change in the concentration of a reactant or product per unit time:

      The unit is  mol dm⁻³ s⁻¹

Reaction rate = \frac{change in concentration of a reactant and product}{time taken }

The measurement of the reaction rate is based on the disappearance of a reactant or appearance of a product with increasing reaction time.

Learn more:

Reaction rate brainly.com/question/9642960

#learnwithBrainly

5 0
3 years ago
Compute the reactance of a 0.450 H inductor at the frequency of 60.0 Hz. Express your answer in ohms.
vlada-n [284]

Answer:

169.67Ω

Explanation:

This question is asking for the inductive reactance, which is calculated as follows:

X(L) = 2πfL

Where;

X(L) = inductive reactance (Ω)

f = frequency (Hz)

π = 3.142

L = inductance (Henry)

Given the information provided, f = 60Hz, L = 0.450H

X(L) = 2πfL

X(L) = 2 × 3.142 × 60 × 0.450

X(L) = 6.284 × 60 × 0.450

X(L) = 6.284 × 27

X(L) = 169.668

X(L) = 169.67Ω

7 0
3 years ago
The hydrophobic effect is the primary driving force for protein folding because: Question 4 options: a) A folded protein is able
Marysya12 [62]
A) folded protein happens because this is the most stable conformation that has the most number of internal hydrogen bonds , which result in hydrophobic functional groups being on the outer sides of the protein and causing the hydrophobic effect

6 0
3 years ago
What is the energy of a TV wave that NBC broadcasts, if it has a wavelength of 32 meters?
serg [7]

Answer:

Explanation:

E = hc/λ

h = planck's constant = 6.66 x 10 ^ -34

c = speed of light = 2.98 *10^8 m/s

E = (6.66 x 10 ^ -34 )(2.98 *10^8)/32

  = 19.85 * 10 ^-26

   =0.62 x 10^-26

   = 6.2 x 10^-27 J

8 0
2 years ago
Other questions:
  • Which statement describes nuclear binding energy?
    8·2 answers
  • A cube of copper has a temperature of 5°C. The cube is placed in a closed container whose internal temperature is 85°C. What wil
    14·2 answers
  • Anthracite is so hard and pure it is also referred to as a _____.
    10·1 answer
  • Calculate the number of kilojoules to warm 125 grams of iron from 23.5 degrees Celcius to 78 degrees Celcius
    12·1 answer
  • Global warming____.
    12·2 answers
  • The molarity of a solution prepared by dissolving 4.11 g of NaI in enough water to prepare 312 mL of solution is
    7·1 answer
  • Pls pls help I will give brainlist
    11·1 answer
  • A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loo
    9·1 answer
  • Which of the following is the best example of an isolated system?
    12·2 answers
  • choose the true statement(s) about ions. to be marked correct, you’ll need to select all true statements, as there may be more t
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!