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lara [203]
3 years ago
5

How do scientists determine the number of neutrons in an isotope of an atom?

Chemistry
2 answers:
Mice21 [21]3 years ago
5 0
Scientists can calculate the number of neutrons by subtracting the atomic number from the atomic mass. The atomic number of an element is the number of protons which can be found in the nucleus of the element's atoms. The atomic mass of an element is the product of protons plus neutrons. The number of neutrons is not always equal to the number of protons. By subtracting the atomic number from the atomic mass, the difference will be how many neutrons are in the element's nucleus.
gulaghasi [49]3 years ago
5 0
D. They subtract the atomic number from the atomic mass.
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Can someone help please
enyata [817]

Answer:

d. cells are made of atoms and molecules. :)

Explanation:

hope i helped

8 0
3 years ago
Read 2 more answers
If 1.20 moles of an ideal gas occupy a volume of 18.2 l at a pressure of 1.80 atm, what is the temperature of the gas, in degree
scoundrel [369]

We can calculate for temperature by assuming the equation for ideal gas law:

P V = n R T

Where,

P = pressure = 1.80 atm

V = volume = 18.2 L

n = number of moles = 1.20 moles

R = gas constant = 0.08205746 L atm / mol K

Substituting to the given equation:

T = P V / n R

T = (1.8 atm * 18.2 L) / (1.2 moles * 0.08205746 L atm / mol K)

T = 332.70 K

We can convert K unit to ˚C unit by subtracting 273.15 to Kelvin, therefore

T = 59.55 ˚<span>C</span>

6 0
3 years ago
An aqueous solution that has a hydrogen ion concentration of 1.0 x 10^-8 mole per liter has a pH of
spin [16.1K]

Answer: 8, which is basic

Explanation: The hydrogen ion concentration is 1.0 x 10^-8 mole per liter. Using [H+] = 1.0 x 10 -(pH) the pH is 8. A pH above 7 is basic.

7 0
3 years ago
Which substance is not capable of acting as an arrhenius acid in aqueous solution
olga2289 [7]

Answer:

SO3 2- which is sulfite

i have to put this because it doesnt let me send the answer like that :)

3 0
3 years ago
How many protons does the largest transition metal have in its nucleus?
CaHeK987 [17]
The largest transition metal is copernicium with 112 protons
4 0
3 years ago
Read 2 more answers
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