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
Leya [2.2K]
3 years ago
6

Which of the following pairs of elements belong to the same period?

Chemistry
1 answer:
bagirrra123 [75]3 years ago
3 0

Answer:

He and Ar

Explanation:

You might be interested in
How many atoms are in 0.500mol of calcium?
creativ13 [48]

Answer:

3.01×10²³ atoms of calcium

Explanation:

number of moles = number of atoms/Avogadro's constant

n = N/NA

N = n×NA = 0.500 mol×6.02×10²³ mol^-1

N = 3.01×10²³ atoms of calcium

3 0
3 years ago
How many molecules are in 3 moles of NaCl?
PtichkaEL [24]

Answer:

Given : No. Of moles = 1.5

To calculate : no. Of molecules =N

We know that moles = N / 6.022 x 10²³

Therefore, 1.5 x 6.022 x 10²³ = N

Hence N = 9.0330x 10²³ molecules

3 0
3 years ago
How many grams of NaNO3 in 165 grams of H2O at 20°C would fully dissolve?
Fantom [35]

Answer: birchbox

Explanation:

6 0
3 years ago
Which resonance structure would most likely create the infrared (IR) spectrum for the equilibrium geometry calculation of SCN −
rjkz [21]

Answer:

Resonance Structures for SCN-:[S-C N]-

Resonance StructureEnergy (kJ/mol)[S-C N]--23.00[S=C=N]

3 0
3 years ago
Is the following equation balanced or unbalanced?
dangina [55]
It is balanced I think
4 0
2 years ago
Other questions:
  • Which of the following solutions will have the lowest boiling point?
    15·1 answer
  • How wouldo I do research on which cup would keep a hot drink warmer
    6·1 answer
  • How much heat is transferred in the process of completely melting a 1.6kg block of ice starting at -15 degrees Celsius? Is this
    7·1 answer
  • Calculate the pH of a solution prepared by dissolving 0.370 mol of formic acid (HCO2H) and 0.230 mol of sodium formate (NaCO2H)
    14·1 answer
  • The slowest step of a reaction mechanism is called the
    11·1 answer
  • How many molecules are in 1.00 g of C10H14N2? 3.71 x 1021 9.76 x 1025 1.02 x 10-26 2.32 x 1022
    14·1 answer
  • In complete sentences, describe the behavior of a substance in each state of matter if placed in a closed container
    14·1 answer
  • Mitochondria _ <br>Plant​
    11·2 answers
  • How do ethics affect scientific research
    6·1 answer
  • Will give brainliest
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!