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
Valentin [98]
3 years ago
6

An atom or ion has 41 neutrons, 36 protons, and 36 electrons. Identify the element symbol, and determine the mass number

Chemistry
1 answer:
igor_vitrenko [27]3 years ago
5 0

Answer:

Element symbol: Kr.

Mass number: 77.

Charge : 0.

Explanation:

Hello,

In this case, since such substance has the same amount of protons and electrons we can infer it is an atom whose number of neutrons is defined by considering its atomic mass or mass number and atomic number which is actually equal to the number of protons and electrons (36):

neutrons=atomic\ mass - atomic\ number

In such a way, solving for the atomic mass we obtain:

atomic\ mass=neutrons+ atomic\ number\\\\atomic\ mass=41+36=77

It means that the element is krypton (Kr) as it has 36 electrons and protons so its charge is 0.

Best regards.

You might be interested in
The atmospheric pressure on the surface of Venus is 6.84X10^4. Calculate the atmospheric pressure in atm and torr. Round each of
quester [9]

Answer:

0.675 atm

513 Torr

Explanation:

Given is that, the atmospheric pressure on the surface of Venus is

6.84 X 10⁴ Pa.

1 atm (atmospheric pressure) is equal to 101325 pascal (Pa).

To convert divide the pressure value by 101325.

Pressure in atm = \frac{6.84 \times 10^{4} }{101325}

= 0.675055 atm

Rounding it off to 3 significant digits: 0.675 atm

Now,  one Torr is 133.322 Pa. For conversion, divide the pressure value by 133.322.

Pressure in Torr = \frac{6.84 \times 10^{4} }{133.322}

=513.04219 Torr

Rounding it off to 3 significant digits: 513 Torr

5 0
2 years ago
during a chemical reaction when the products of that reaction require less potential energy describe what happens to the surroun
Neko [114]
They stay the same I am pretty sure this is
4 0
2 years ago
When the energy is removed what will happen to a gas?
creativ13 [48]

Answer:

  • <u>Hey </u><u>mate </u>
  • <u>I </u><u>hope </u><u>it </u><u>helps </u>

Explanation:

<h3>Removing Energy: Removing energy will cause the particles in a liquid to begin locking into place. A. Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.</h3>

<h2>PLZ <u>MARK </u><u>ME </u><u>AS </u><u>BRAIN </u><u>LIST </u><u /></h2>

<u>THANKS </u><u />

8 0
3 years ago
Read 2 more answers
A second-order reaction has a rate law: rate = k[a]2, where k = 0.150 m−1s−1. If the initial concentration of a is 0.250 m, what
Cerrena [4.2K]

Rate law for the given 2nd order reaction is:

Rate = k[a]2

Given data:

rate constant k = 0.150 m-1s-1

initial concentration, [a] = 0.250 M

reaction time, t = 5.00 min = 5.00 min * 60 s/s = 300 s

To determine:

Concentration at time t = 300 s i.e. [a]_{t}

Calculations:

The second order rate equation is:

1/[a]_{t} = kt +1/[a]

substituting for k,t and [a] we get:

1/[a]t = 0.150 M-1s-1 * 300 s + 1/[0.250]M

1/[a]t = 49 M-1

[a]t = 1/49 M-1 = 0.0204 M

Hence the concentration of 'a' after t = 5min is 0.020 M



7 0
3 years ago
Can an Atom be broken down into a smaller substance? Yes or No Explain.
Pepsi [2]
Yes it can as it’s made of protons neutrons and electrons which is how we break the atoms down
7 0
2 years ago
Read 2 more answers
Other questions:
  • A He-Ne laser (wavelength λ = 600 nm) shines through a double slit of unknown separation d onto a screen 1.44 m away from the sl
    12·1 answer
  • Which word or group of words is represented by the word "period" in the term Periodic Table?
    5·2 answers
  • How many moles of MgS2O3 are in 171 g of the compound?
    10·1 answer
  • g A chemist combines 59.9 mL of 0.282 M potassium bromide with 15.4 mL of 0.512 M silver nitrate. (a) How many grams of silver b
    8·1 answer
  • A true statement about mass is that:
    6·1 answer
  • Determine the number of atoms present in 4.5 mols of Calcium
    6·1 answer
  • What type of molecule is 3-hexyne?
    13·1 answer
  • 100. g of ice at 0 is added to 300.0 g of water at 60C. Assuming no transfer of heat to
    11·1 answer
  • When cyclopentane undergo free-radical substitution with bromine (Br2 /Heat) the product:
    5·1 answer
  • If mechanical energy = kinetic energy + potential energy then as the potential energy decrease what happens to the kinetic energ
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!