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
Gemiola [76]
3 years ago
7

The number 40 in the name calcium-40 represents

Chemistry
2 answers:
strojnjashka [21]3 years ago
7 0

Answer:

A. the atomic number

Explanation:

It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth.

IgorC [24]3 years ago
4 0
A) the atomic number
You might be interested in
Convert 1.2030 moles of sodium chloride to grams
vazorg [7]
70.306 would be your answer.
5 0
3 years ago
Read 2 more answers
What are the primary elements of the earths layres?
Vaselesa [24]
The 4 main one are Iron, oxygen, silicon, and magnesium<span />
4 0
3 years ago
7.7 cm<br> 9.8 cm<br> 0.00<br> 0.162 m
eimsori [14]

Answer:

Volume = 1222.5cm³

Explanation:

<em>If the question is about the volume of the rectangle:</em>

The volume of a rectangle is obtained by the multiplication of its 3 dimensions: Length, width, height.

In the problem, the length of the rectangle is 0.162m = 16.2cm

The width is 7.7cm

And the height is 9.8cm

The volume is:

Volume = 16.2cm*7.7cm*9.8cm

<h3>Volume = 1222.5cm³</h3>
5 0
2 years ago
At night,plants take in the gas of​
IgorC [24]

Answer:

Oxygen.

Explanation:

They take in oxygen from the air. This is the process of respiration.

5 0
3 years ago
List down the observations made by Rutherford during the gold foil experiment.
Travka [436]

Answer:

1) The volume occupied by an atom is composed of mainly empty space

2) Atoms have a very small, relatively dense, central nucleus that is positively charged

3) The region around the nucleus of an atom are orbited by negatively charged electrons in a the same fashion planets orbit around the Sun.

Explanation:

The selection of gold for the gold foil experiment was due to its ability to be rolled into extremely thin sheets such that it was expected for alpha particle to perforate or pass through the foil.

7 0
3 years ago
Other questions:
  • Which of the following mountain ranges is the result of a continent-continent orogeny?
    9·1 answer
  • Compare what happens to the energy, order, and spacing particles when a solid other than ice changes to a liquid with what happe
    5·1 answer
  • How many protons and electrons are present in a vanadium atom
    8·2 answers
  • The summary or ending of your experiment​
    7·1 answer
  • Which of these is a physical factor that can influence the amount of plant life that can grow in an ecosystem? A. Plant-eating a
    7·2 answers
  • What happens when an atom has more electrons than can fit in one energy
    9·1 answer
  • Describe two substances that are useful because of their viscosity
    14·1 answer
  • Which of the following notations is the correct noble gas configuration for Li
    15·2 answers
  • A neutral atom has a ground state electron configuration of 1s22s22p63s2.The neutral atom becomes an ion during a chemical react
    6·1 answer
  • Among the following compounds which are isomers?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!