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
valkas [14]
3 years ago
5

Consider the substances below.

Chemistry
1 answer:
ratelena [41]3 years ago
6 0

Answer:

They have the same number of atoms. = YES

They have different masses. = YES

Explanation:

1 mol of beryllium

• 1 mol of salt

beryllium  = Be = Atomic mass: 9.012182

salt  = NaCl = Molar mass: 58.44 g/mol

1 mol of water

• 1 mol of hydrogen

water  = H2O = Molar mass: 18.01528 g/mol

hydrogen = H = 1g/mole

Which statement is true about these substances?

They have exactly the same mass. = NO

They have different numbers of particles = NO

They have the same number of atoms. = YES

They have different masses. = YES

Avogadro constant means the number of units in one mole of any substance (defined as its molecular weight in grams) is equal to 6.02214076 × 10^{23}.

You might be interested in
How many moles of gas are in 4.4 mL at 1.2 atm?
kirza4 [7]
The Correct Answer Is 3.2
3 0
3 years ago
Which refers to the chemical name for NO2?
Anna35 [415]

Answer:

C

Explanation:

6 0
3 years ago
Read 2 more answers
Express 0.08010 in exponential notation to the proper significant figures
nataly862011 [7]
This would be 8.010 * 10^-2
3 0
3 years ago
Choose two of the following scientists: Anton Lavoisier, John Dalton, JJ Thomson, Robert Millikan, Ernest Rutherford, James Chad
elixir [45]

Answer:

John Dalton:

John Dalton was the scientist who introduced atomic theory in the field of chemistry. Dalton worked on different gases and formulated this theory. The main points of Dalton's theory are:

  • Every element present is made up of atoms.
  • Atoms of an elements are have the same same properties whereas these properties are different for each element.
  • According to his theory, an atom could not be broken down.
  • Different atoms combine or get separated from each other during a chemical reaction.

Ernest Rutherford:

Ernest Rutherford is known as the father of nuclear physics due to his impressing research work on radioactivity of atoms. Rutherford was the first scientist to discover the nucleus of an atom and prove that the nucleus was charged. He also described that the electrons circle around the nucleus of an atom.

6 0
3 years ago
What is the smallest halogen atom<br>​
ad-work [718]
The smallest halogen atom is fluorine
4 0
2 years ago
Read 2 more answers
Other questions:
  • HOW DOES CHEMILUMINESCENCE WORK AND WHERE IS IT USED?
    9·1 answer
  • A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm,
    5·2 answers
  • What is a certain indicator that a molecule is polar
    13·1 answer
  • What property of argon is uses in light bulbs?
    5·2 answers
  • Cyanobacteria______.a.can fix nitrogen, thus causing many freshwater ecosystems to be limited by phosphorus availability.b.can m
    15·1 answer
  • Which is not true of the element nitrogen?
    9·1 answer
  • According to 2011/Chemistry Reference Tables
    15·1 answer
  • Boyle's Law shows an inverse relationship between:
    10·1 answer
  • How many sulfur atoms are in 3.7 mol of SO2?<br><br> × 10 S atoms
    11·1 answer
  • The element that appears farthest to the is written first in the chemical name of a covalent compound.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!