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
likoan [24]
3 years ago
12

Convert 15.2 moles of K to atoms of K.

Chemistry
1 answer:
choli [55]3 years ago
3 0

Answer:

\boxed {\boxed {\sf 9.15*10^{24} \ atoms \ K}}

Explanation:

To convert atoms to moles, Avogadro's Number must be used: 6.022*10²³.

This tells us the amount of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case it is the atoms of potassium. We can create a ratio.

\frac {6.022*10^{23} \ atoms \ K }{ 1 \ mol \ K }

Multiply by the given number of moles: 15.2

15.2 \ mol \ K *\frac {6.022*10^{23} \ atoms \ K }{ 1 \ mol \ K }

The moles of potassium cancel.

15.2 *\frac {6.022*10^{23} \ atoms \ K }{ 1 }

The denominator of 1 can be ignored.

15.2 * {6.022*10^{23} \ atoms \ K }{

Multiply.

9.15344*10^{24} \ atoms \ K

The original measurement of moles has 3 significant figures, so our answer must have the same. For the number we calculated that is the hundredth place. The 3 in the thousandth place tells us to leave 5.

9.15*10^{24} \ atoms \ K

In 15.2 moles of potassium, there are <u>9.15*10²⁴ atoms of potassium.</u>

You might be interested in
How many total electrons are shared between two nitrogen atoms when they bond to form a diatomic nitrogen molecule?
GuDViN [60]

Explanation:

Diatomic Nitrogen molecule means the two atoms of nitrogen N_{2}.

  • A single nitrogen contains 5 electrons in its valence shell which has 3 single electrons and one pair of electron. When the bond is being made the three single electrons makes the covalent bond with the 3 electrons of other atom which results in 3 pairs . The total electrons shared between the atoms are 3 pairs  (6 electrons) . while when it completes the octate the N_{2} is formed.
  • Nitrogen is colorless, odorless, tasteless and the inert diatomic gas.Nitrogen combines of near about 78% of Earth's atmosphere.It is non-flammable which does not support combustion , it occurs in all living organisms. Nitrogen is used in most of the Biological processes  and also used in the formation of fertilizers, in the form of ammonia and ammonia based compounds.It is also used in Chemical Industries for making nylon , explosives, dyes and etc. The breathing of Nitrogen is deadly, as it displaces the oxygen.
8 0
3 years ago
Which change of state is shown in the model?
Shalnov [3]

Answer:

Deposition

Explanation:

The process of deposition is when an object goes from a gas to a solid. In the picture, the first container had a gas (molecules were far apart). In the second, the molecules were tightly packed (a solid).

Hope this helps!

3 0
3 years ago
Can anyone help me with the calculations for the Frequency, Wavelength, Energy Chart?
sergeinik [125]
Use the following equations to fill the chart.

E = hf
where
h = 6.63 x 10⁻³⁴ J/s, Planck's constant
f = frequency Hz
E = quanta of energy, J

c = fλ
where
c = 3 x 10⁸ m/s, the velocity of light
λ = wavelength, m

If energy is given in J/mmol, divide by Avogadro's number, N = 6.02 x 10²³, to convert it to J.

The completed table is shown below.

3 0
3 years ago
How many bases are needed to code for one amino acid?
N76 [4]

Answer:

Three. Also known as a triplet code.

4 0
3 years ago
Ian uses litmus paper to determine whether five unknown solutions are acids or bases. The litmus paper turns red when the pH is
Roman55 [17]

Answer: b

explanation: i had the question on a test and got it right.

3 0
3 years ago
Other questions:
  • Why is it reasonable to assume the specific heats of naoh and hcl solutions are the same as water?
    5·1 answer
  • Is steam a water , oxygen or hydrogen molecule ?
    7·2 answers
  • Consider the n = 3 energy level in a hydrogen atom. how many electrons can be placed in this level?
    5·2 answers
  • Which of the following correctly describe insulin and glucagon? select all that apply.
    11·1 answer
  • A sample gaseous CO exerts a pressure of 45.6mm Hg in a 56.0L flask at 22 C. If the gas is released into a 2.70 x 10^4 liter roo
    6·1 answer
  • How many neutrons does Mn have?
    14·2 answers
  • Trends in atomic radius of Period 3 elements
    9·1 answer
  • One similarity between all mixtures and compounds is that both
    15·1 answer
  • In the future, biotechnology could be used to select traits in unborn babies.
    11·1 answer
  • Answer this i’m so confused
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!