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
GuDViN [60]
3 years ago
7

The core of the 40 calcium atom, the most common isotope is symbolized by ₂₀⁴⁰Ca.

Chemistry
1 answer:
wariber [46]3 years ago
6 0

1) 20 protons, 20 electrons, 20 neutrons and so 40 nucleons

2) 40 x 1,67 x 10^-27 = 6.68 x 10^-26

This is the core's mass and the atom mass at the same time because the elctron's mass isn't important ( like 1/1000 of the mass )

3) ₂₀⁴²Ca        ₂₀⁴³Ca         ₂₀⁴⁴Ca

Those are the three one's.



4) It forms a cation.


You might be interested in
Which substance has a definite shape and definite volume?
tino4ka555 [31]

Answer:

D iced tea

Explanation:

right answers

3 0
2 years ago
What does the term "basic unit of matter" refer to?
MArishka [77]
Vas happenin
Hope your day is going well
Atoms are referred to basic unit of matter
Hope this helps *smiles*
4 0
3 years ago
Read 2 more answers
When an object is lifted 6 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 18
AlexFokin [52]

Answer:

The answer to your question is the letter C. three times as much

Explanation:

Data

First step = 6 m

Second step = 18 m

Potential energy is the energy stored that depends on its position.

Formula

Pe = mgh

m = mass; g = gravity; h = height

Potential energy of the first step

        Pe1 = 6mg

Potential energy of the second step

        Pe2 = 18mg

-Divide the Pe2 by the Pe1

        Pe2/Pe1 = 18mg/6mg

                       = 3

7 0
3 years ago
Which statements correctly describe characteristics of cells? Check all that apply. A. Animal cells are all generally circular i
Gnoma [55]

Answer:

A. Correct

B. Wrong

C. Wrong.

D. Correct.

E. Correct.

Explanation:

8 0
3 years ago
Which pair below describes isotopes of the same element? A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6
V125BC [204]

<u>Answer:</u> The atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.

<u>Explanation:</u>

Isotopes are defined as the chemical species that belong to the same element but differ in their mass number.

This also means that the chemical species have same number of protons and electrons but different number of neutrons.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

From the given options:

The elements having same number of protons will be the isotopes of same element.

Hence, the atom with 6 protons and 6 neutrons and an atom with 6 protons and 7 neutrons are the isotopes of same element.

8 0
3 years ago
Other questions:
  • The total mass of the protons in an atom of gold-198 is approximately
    6·1 answer
  • Which energy transformation most likely occurs in a steam iron
    6·1 answer
  • 3/5 of 1 1/9 + 3 1/2<br>​
    7·1 answer
  • given that 32.0g sulphur contains 6.02×10^23 sulphur atoms,how many atoms are there in 2.70g of aluminum​
    11·1 answer
  • Blue and orange, which color can be best absorbed?
    7·1 answer
  • Find the density of metal with a volume 4.0 cm and a mass of 8.0 grams.
    9·1 answer
  • What mass of Na2SO4is needed to make 2.5 L of 2.0 Msolution? (Na = 23 g; S = 32 g; O = 16 g)
    13·1 answer
  • Why we add PH10 When we determine the zn ion​
    6·1 answer
  • Which metalloids would behave more like metals? Which metalloids would behave more like nonmetals?.
    11·2 answers
  • How many silicon atoms are there in 28.09 g of Si?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!