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
arlik [135]
3 years ago
6

Explain how you know that no new element with an atomic number less than 100 will be discovered

Chemistry
1 answer:
Klio2033 [76]3 years ago
3 0
The elements are identified by its aomic number and they are placed in the periodic table in ascending order of atomic number.

There is one unique element for a given atomic number.

For example, atomic number 1 identifies Hydrogen and there cannot be another different element with the same atomic number.

All the elements with atomic numbers from 1 to 118 have been discovered. So, you know that there is not room for new products with atomic number equal or less than 118.
You might be interested in
What mass in grams of hydrogen is produced by the reaction of 2.0 g of magnesium? (Make sure to balance the reaction first)
denpristay [2]

Answer:

0.164541341 g H2

Explanation:

1) Convert grams to moles by dividing by RMM of Magnesium (24.31g).

  2g Mg * (1 mol Mg / 24.31 g Mg) = 0.082270671 mol of Mg

2) Use the balanced equation's ratio of 1 mol Mg: 1 mol H2.

  0.082270671 mol of Mg = 0.082270671 mol of H2

3) Convert the mol of H2 back into grams by multiplying by H2's RMM (2 g).

  0.082270671 mol of H2 * 2 g H2 = 0.164541341 g H2

* Answer can be rounded to your liking *

7 0
4 years ago
The surface forces that change the surface of the earth are:
pshichka [43]
Number one victory royal yaaa
5 0
3 years ago
What is meant by the following statement?
Yanka [14]

Answer:

D.

Explanation:

Inverse and proportional means as one goes up the other goes up or if one goes down the other goes down.

- Hope that helped! Please let me know if you need further explanation.

6 0
4 years ago
Read 2 more answers
Select the steps that are associated with energy entering the system. Check all that apply.
quester [9]

Answer: option c. the mixing of solute and solvent molecules

Explanation:

8 0
3 years ago
Read 2 more answers
If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the
Alchen [17]

In the first law of thermodynamics, it states when heat is converted into energy, where as the total energy in the room could transform into another but can never be created or destroyed. If you release 258J of energy in the room, 258J would also be removed from the food according to the isolating system.

Your answer would be 258J.

4 0
3 years ago
Other questions:
  • What is the volume of a balloon of gas at 842 mm Hg and -23° C, if its volume is 915 mL at a pressure of 1,170 mm Hg and a tempe
    11·1 answer
  • Which has greater mass, 1 mole of iron atoms or 1 mole of lithium
    9·1 answer
  • Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen iodide
    8·1 answer
  • The gravitational force acting on an object is also called the object's _____. A) mass B) weight C) density D) volume​
    6·2 answers
  • Indicate whether the following represents a Chemical or Physical change: Gasoline burns in air
    10·2 answers
  • Según la cinética química para que una reacción ocurra, los átomos o moléculas deben
    10·1 answer
  • Fill in the blank<br> The (blank) of a rock is a result of its mineral composition.
    12·1 answer
  • Balance this equation. Pb(NO3)2(aq)+NaCl(aq) -&gt; NaNO3(aq)+PbCl2(s)
    13·1 answer
  • I REALLY NEED HELP ITS DUE AT 11:59 PM
    9·2 answers
  • A teacher had her students write down hypotheses about an experiment. Which is a valid hypothesis? (1 po If Earthquakes occur, t
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!