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
k0ka [10]
3 years ago
5

The first periodic table were arranged elements in order of

Chemistry
1 answer:
FrozenT [24]3 years ago
3 0

Answer:

in order of atomic mass

Explanation:

apex

You might be interested in
The number of protons in an atom is called?
Serhud [2]
The thing that it is called is it is called the atomic number of the thing
3 0
3 years ago
Read 2 more answers
In a calorimetry experiment, a salt is dissolved in water within an insulating container. The temperature of the solution (surro
Stels [109]

Answer:

Explanation:

heat released  by the solution

= 120 x 3.18 x ( 25 - 14 )

= 4197.6 J

= 4.1976 kJ

This is the heat gain by the salt

so enthalpy change = +  4.1976 kJ

because there is increase  in enthalpy

It is endothermic process .

7 0
3 years ago
How many moles of HCl are required to completely neutralize 0.30 moles of Ca(OH)2?
hammer [34]
Each mole of Ca(OH)₂ will produce 2 moles of OH- ions

Each mole of OH- ions will require one mole of H+ ions

Thus,
moles of OH- ions = moles of H+ ions = 2 x 0.3
moles of H+ ions required = 0.6

Each mole of HCl will produce one mole of H+ ions
Moles of HCl = moles of H+ ions
Moles of HCl = 0.6
3 0
3 years ago
Read 2 more answers
Which of the following represents a phase change? A. Melting B. Crushing C. Expanding D. Burning
Fantom [35]
Melting is an example of phase change
6 0
3 years ago
Carbon has an atomic number of 6, but the following orbital notation for carbon is incorrect. Explain the error in terms of the
a_sh-v [17]

Carbon:

1s is filled. 2s is filled. 2p is shown to contain two electrons in one orbital and no electrons in the other two orbitals.

8 0
3 years ago
Other questions:
  • Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. One of
    6·1 answer
  • Which subatomic particle has negligible mass and travels around outside the nucleus?
    8·1 answer
  • A small bar of gold whose density is 19.3 g/cm³, displaces 80 cm³ of water when dropped into a beaker. What's the mass of the ba
    14·1 answer
  • Which of these provides the BEST evidence that the distribution of Earth’s oceans has changed over time?
    12·1 answer
  • You have a solution of sugar in water.You want to obtain the sugar from it.A:explain why filtration will not work ,b:which metho
    10·2 answers
  • What determines the order of the elements in the modern periodic table ?
    7·1 answer
  • the relationship between the heated air particles inside a hot air balloon and the cooler air outside the balloon?
    10·2 answers
  • 11.27 mol of carbon dioxide gas is equal to how many liters
    15·1 answer
  • Because electron delocalization stabilizes a compound, if the only way electrons can be moved is away from the most electroneagt
    8·1 answer
  • Step 4: Summarize nuclear changes.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!