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
Snowcat [4.5K]
3 years ago
5

How are elements arranged in the periodic table? By number or by mass?

Chemistry
2 answers:
VMariaS [17]3 years ago
8 0

Answer:

By atmoic numbers........

myrzilka [38]3 years ago
8 0

the awncers would be numbers

You might be interested in
Which of the following elements has a complete outer shell of electrons? A. Iron (Fe) B. Hydrogen (H) C. Neon (Ne) D. Nitrogen (
Julli [10]

Answer:

The answer is Neon

3 0
3 years ago
Which part of dalton's theory did thomson's findings dispute? atoms of different elements have different masses. atoms of the sa
skad [1K]
Answer is: the atom is the smallest known particle of matter.
John Dalton claimed that atom is indestructible and a<span>ll atoms of a given element are identical in mass and properties.
</span>Thomson discovered electron and found the first evidence for isotopes<span> of a stable element.</span>


7 0
3 years ago
Read 2 more answers
What is the molar mass of PCL3
antiseptic1488 [7]
The molar mass for PCL3 is 137.33 g/mol
8 0
3 years ago
Suppose 2.8 moles of methane are allowed to react with 5 moles of oxygen.
Ronch [10]

Answer : The limiting reagent is O_2

Solution : Given,

Moles of methane = 2.8 moles

Moles of O_2 = 5 moles

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

CH_4+2O_2\rightarrow CO_2+2H_2O

From the balanced reaction we conclude that

As, 2 mole of O_2 react with 1 mole of CH_4

So, 5 moles of O_2 react with \frac{5}{2}=2.5 moles of CH_4

From this we conclude that, CH_4 is an excess reagent because the given moles are greater than the required moles and O_2 is a limiting reagent and it limits the formation of product.

Hence, the limiting reagent is O_2

8 0
3 years ago
Students in a chemistry class are drawing molecular models based on molecular formulas they are given by the teacher.
Karo-lina-s [1.5K]
Sorry I need this marks
5 0
3 years ago
Other questions:
  • In the symbol (4/2)He, the superscript 4 is the for helium, and the subscript 2 is the for helium.
    9·2 answers
  • Does light take up space?
    15·2 answers
  • The following questions are about ethyl bromide,n-propyl bromide, isopropyl bromide,t-butyl bromide, &amp; neopentyl bromide
    11·1 answer
  • Given 8.25 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100
    10·1 answer
  • Explain why each molecule has a higher boiling point than the other in the pair Match the words in the left column to the approp
    13·1 answer
  • Write the empirical formula for at least four ionic compounds that could be formed from the following ions:
    7·1 answer
  • When you hold an object with a positive electric charge near an object with a
    9·1 answer
  • How many moles are in 25.58 grams of H20? SHOW WORK
    8·1 answer
  • What is the universal solvent? <br>A. hydrogen <br>B. water <br>C. oil <br>D. acid​
    9·1 answer
  • Problems 307 How many milliliters of a 2.5 M NaCl solution would be needed to prepare each solution? a. 1.5L of a 0.75m solution
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!