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
spayn [35]
3 years ago
12

What was the key characteristic by which Dmitri Mendeleev arranged his periodic table? A. increasing atomic number B. electron c

onfiguration C. decreasing atomic number D. increasing atomic mass
Chemistry
2 answers:
valentina_108 [34]3 years ago
4 0
I think the correct answer from the choices listed above is option A. The key characteristic by which Dmitri Mendeleev arranged his periodic table was that the elements are arranged in increasing atomic number. Hope this answers the question.
Anastasy [175]3 years ago
4 0

Answer:  D. increasing atomic mass

Explanation:  Dmitri Mendeleev  arranged the periodic table on the basis of the increasing atomic mass.

He observed the physical and chemical properties of the elements and he found that these properties are related to their atomic masses. Thus he arranged these elements on the basis of the physical and chemical properties into different kinds of groups.

Thus elements with similar property was arranged in the same group.

You might be interested in
How many grams of H2 will react with 350 g of N2?
miss Akunina [59]

Answer:

10.80

Explanation:

As per the equation, let us calculate the mole ratio. N2+3H2→2NH3. As per the equation one mole of nitrogen  reacts with 1 mol of hydrogen.

In terms of mass. 28.01 g of nitrogen needs 3 mol of hydrogen or 6.048 g of hydrogen.

We can set up the ratio;

28.01 g of

l

N

2

needs  

6.048 g of

l

H

2

1 g of

l

N

2

needs  

6.048

28.01

g  of

l

H

2

50.0 g of

l

N

2

needs  

6.048

×

50.0

28.01

l

g of

l

H

2

=

10.80 g of

l

H

2

6 0
3 years ago
The number of calories in 10 grams of sugar is an example of a(n) ___________________.
DanielleElmas [232]

Answer:

Extensive is the answer of this question?

4 0
4 years ago
Read the following chemical equations.
fredd [130]
D) Chlorine is reduced as hydrogen is added whereas Iron is oxidised as Joins with a non hydrogen compound.
8 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
mezya [45]
Since Chlorine is in excess, this is a limiting reagent problem.
1) convert 11.50 g Na to g of NaCl using the balanced equation.
2) percent yield = (actual yield)/(potential yield).

.85= (actual yield)/(g from step 1)

Solve for actual yield
5 0
4 years ago
Read 2 more answers
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solutio
Alja [10]

Answer:

Concentration of original solution = 1.66

Explanation:

We know that

H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O

We have given concentration of NaOH = 0.1678

Volume of NaOH = 19.88 mL = 0.01988 L

So moles of NaOH = volume x concentration of NaOH

= 0.01988\times 0.1678=0.00333mole

Moles of H_2SO_4 in 10 mL of diluted solution = 1/2 x moles of NaOH

= \frac{1}{2} x 0.00333 = 0.00166 mol

Moles of H_2SO_4 in 25 mL of original solution

= moles of H2SO4 in 250 mL of diluted solution

= \frac{250}{10} x 0.00166 = 0.0415 mol

Concentration of original solution = \frac{moles}{volume}

= \frac{0.0415}{0.025}=1.66

8 0
3 years ago
Other questions:
  • At standard pressure which substance becomes less soluble as temperature increases from 10. °c to 80.°c
    7·1 answer
  • Why does a baseball have more mass than a ping pong ball
    14·2 answers
  • The constant k for a certain reaction is measured at two different temperatures:Temperature K376.0°C 4.8x 10^8280.0°C 2.3 x 10^8
    13·1 answer
  • Question 6
    5·1 answer
  • HELP PLEASE
    9·2 answers
  • Calculate the pH of the following?
    5·1 answer
  • How<br> many<br> molecules are in 8.55x10-15 moles of a substance
    15·1 answer
  • Please help :/ || 10 pts || will mark brainlest ||
    5·1 answer
  • SOLVE FAST....⚡⚡⚡
    6·1 answer
  • What is epoxy?<br> ....................
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!