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
olga_2 [115]
4 years ago
12

An atom with 19 protons and 18 neutrons is a(n)

Chemistry
1 answer:
Eddi Din [679]4 years ago
8 0

Answer:

A

Explanation:

The number of protons indicates the element so we know it's potassium. To get the number of neutrons you subtract the number of protons (19) from the mass number which for potassium is 39.

39-19=20 neutrons

Because you have 18 neutrons then yours would be an isotope.

You might be interested in
ketch the following intermolecular interactions: a.A hydrogen-bonding interaction between thymol and the surface of a silica par
san4es73 [151]

Answer:

answer is attached

5 0
3 years ago
What two elements constitute about three fourths of earth's solid surface?
olchik [2.2K]
<span>The two elements that constitute almost three fourths of the earth's solid surface are oxygen and silicon. Oxygen accounts for 46.6 percent of the Earth's crust, while silicon is 27.7 percent. The next more plentiful element on the Earth's crust is Aluminum.</span>
6 0
4 years ago
State the observation made when hydrogen chloride gas is passed over ammonia gas
Zarrin [17]

Answer:

dry

Explanation:

it will dry the hydrogen chloride to the ammonia

6 0
3 years ago
Microwave ovens emit microwave energy with a wavelength of 12.8 cm. What is the energy of exactly one photon of this microwave r
levacccp [35]
We are asked for the energy emitted by a photon using the wavelength given. In this case, we use the planck relation that correlates energy and wavelength using Planck's constant and speed of light as constant of proportionality. The formula is E = hc / w where h is equal to 6.626 x10-34 Js and c is equal to 3 x10 8 m/s. E then is equal to 1.55 x10-24 J
3 0
3 years ago
Read 2 more answers
Will give brainliest!
lukranit [14]

Answer:

A.

Explanation:

melting of ice will increase water in oceans due to which water in oceans will increase and salinity will decrease. hence, melting of ice caps near the north pole affects salinity of the ocean

5 0
3 years ago
Other questions:
  • A small rock lies on a slope near a tropical sea. What are three ways that the rock could be eroded?
    10·2 answers
  • A concentration cell consists of two zn/zn2+ electrodes. the electrolyte in compartment a is 0.10 m zn(no3)2 and in compartment
    10·1 answer
  • True or False: A larger numerical value for electron affinity means it is more difficult for an electron to be added to an atom.
    15·2 answers
  • Which of the following is closest to the meaning of the term ancestor?
    6·2 answers
  • Which of the following most likely happens when the temperature of a gas increases? The number of collisions of gas particles re
    11·1 answer
  • Which solute, an electrolyte or a nonelectrolyte, has the greater effect on the boiling point when a given amount of each
    14·2 answers
  • Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points,
    8·1 answer
  • Describe the procedure that you followed to conduct your experiment.
    12·1 answer
  • Why aren't hydrogen fuel cells currently available to the public​
    14·1 answer
  • (a) Find ΔS°rxn for the formation of Cu2₂O(s) from its elements.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!