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
Sever21 [200]
3 years ago
13

What are the classification of most of the elements described as?

Chemistry
2 answers:
pochemuha3 years ago
7 0

Answer:

periodic

Explanation:

Elements are organised in the <em>periodic</em> table of elements, which is essentially a big table that lists elements in order by increasing atomic number and atomic mass.

Each row of a periodic table is called a 'period', and when elements are arranged in the above-described way, there is a repeating pattern because each column has elements that share properties. So as you move across a period (or row), you get elements of different properties, but as you move across another period, you get different elements with similar properties as before.

Thus, it's periodic.

irga5000 [103]3 years ago
7 0

The classification of most elements are described as metals.

In the picture below you will see the periodic table. It will show you elements that are metals, semi-metals, or non-metals.

As you can see in the image, most of the elements are classified as metals which proves that the answer is metals.

Best of Luck!

You might be interested in
When 5ml of HCl was added
777dan777 [17]

Answer:

A. There was still 140 ml of volume available for the reaction

Explanation:

According to Avogadro's law, we have that equal volumes of all gases  contains equal number of molecules

According to the ideal gas law, we have;

The pressure exerted by a gas, P = n·R·T/V

Where;

n = The number of moles

T = The temperature of the gas

R = The universal gas constant

V = The volume of the gas

Therefore, given that the volumes and number of moles of the removed air and added HCl are the same, the pressure and therefore, the volume available for the reaction will remain the same

There will still be the same volume available for the reaction.

5 0
3 years ago
What volume of carbon dioxide gas can be collected from
alisha [4.7K]

Answer:

1.22 L of carbon dioxide gas

Explanation:

The reaction that takes place is:

  • CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

First we <u>determine which reactant is limiting</u>:

  • Calcium carbonate ⇒ 10.0 g CaCO₃ ÷ 100 g/mol = 0.10 mol CaCO₃
  • Hydrochloric acid ⇒ 0.100 L * 0.50 M = 0.05 mol HCl

So HCl is the limiting reactant.

Now we calculate the moles of CO₂ produced:

  • 0.05 mol HCl * \frac{1molCO_{2}}{1molHCl} = 0.05 mol CO₂

Finally we use PV=nRT to <u>calculate the volume</u>:

  • P = 1 atm
  • n = 0.05 mol
  • T = 25 °C ⇒ 25 + 273.16 = 298.16 K

1 atm * V = 0.05 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 298.16 K

  • V = 1.22 L
7 0
3 years ago
What was Johann Dobereiner’s contribution to the development of the periodic table?
umka21 [38]
<span>he introduced his law of triads. each triad was a group of three elements</span>
3 0
3 years ago
Read 2 more answers
group of atoms that gains or loses electrons is called _______. A. a polar ion B. a non-polar ion C. a polyatomic ion D. a commo
raketka [301]

Answer: Option (C) is the correct answer.

Explanation:

An ion is defined as a specie which is formed when a neutral atoms tends to gain or lose an electron.

When a neutral atom gain an electron then it forms a negative ion whereas when a neutral atom tends to lose an electron then it forms a positive ion.

For example, a neutral fluorine atom on gaining an electron will form F^{-} ion. And, a sodium atom on losing an electron forms Na^{+} ion.

When a group of atoms form ions then it tends to form polyatomic ions.

Thus, we can conclude that group of atoms that gains or loses electrons is called a polyatomic ion.

7 0
3 years ago
The reaction H2SO4 + 2 NaOH -&gt; Na2SO4 + 2H2O represents an acid-base tritration. The equivalence point occurs when 24.75 mL o
artcher [175]
            moles NaOH = c · V = 0.2432 mmol/mL · 24.75 mL = 6.0192 mmol
            moles H2SO4 = 6.0192 mmol NaOH · 1 mmol H2SO4 / 2 mmol NaOH = 3.0096 mmol
Hence
            [H2SO4]= n/V = 3.0096 mmol / 38.94 mL = 0.07729 M
The answer to this question is  [H2SO4] = 0.07729 M

6 0
3 years ago
Other questions:
  • Why is the formula for calcium nitride Ca3N2?
    13·1 answer
  • What is tissue onion make of?
    10·2 answers
  • How many moles of carbon are in 7.87*10^7
    10·1 answer
  • Please help quick!!!!!
    7·1 answer
  • In the reaction below, how would adding more of reactant A offect the equilibrium of the system? (2 points)
    6·1 answer
  • If the molar heat of combustion of liquid benzene at constant volume and 300k is -3272KJ. Calculate the heat of combustion at co
    9·1 answer
  • Even before modern observations provided evidence supporting the theory of plate tectonics, people developed theories that the c
    6·1 answer
  • Recall that the water pipes
    14·1 answer
  • The mass of an unidentified metal sphere is 133 grams. Students determine the
    5·1 answer
  • The molecule with the largest dipole moment (a) co2 (b) h2o (c) ch4 (d) c2h4 (e) ph3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!