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
vredina [299]
2 years ago
14

How many molecules are im 4.9 moles of h2o?​

Chemistry
1 answer:
svet-max [94.6K]2 years ago
3 0

The number of units in one mole of a substance is 6.022140857 × 10^23. This is irregardless of whether the particle is an atom, a molecule or an ion.

Therefore, we multiply the number of moles by the Avogadro's number

4.9×6.022140857 × 10^23= 2.95084902×10^24 molecules

You might be interested in
Which statement regarding the second law of thermodynamics is true?
GREYUIT [131]
The Second Law of Thermodynamics<span> says that processes that involve the transfer or conversion of heat energy are irreversible.</span><span> ... The First </span>Law of Thermodynamics<span> states that energy cannot be created or destroyed; the total quantity of energy in the universe stays the same.</span>
4 0
3 years ago
How many particles are in 5.00 grams of nitric acid?
Leto [7]

Answer:

0.0500

Explanation:

7 0
2 years ago
A sample of tin (II) chloride has a mass of 0.49 g. After heating, it has a mass of 0.41 g. 
lyudmila [28]

Answer:

16 percent

Explanation:

Just answered the question

5 0
3 years ago
what is the inferred pressure, in million of atmospheres, in Earth's interior at a depth of 2900 kilometers?
NemiM [27]

Answer:

1.4 millions atmospheres

Explanation:

8 0
3 years ago
Which scientist performed the cathode ray experiment leading to the discovery of electrons
SVETLANKA909090 [29]

The scientist that performed the cathode ray experiment leading to the discovery of electrons is J.J. Thomson.

<h3>What is a cathode ray?</h3>

A cathode ray is a tube that contains negatively charged electrode( that is the cathode) which emits electrons when heated at a low pressure.

The cathode ray was used by the scientist, J.J. Thomson to find the ratio of charge to mass (e/m) of the electrons.

Therefore, the scientist that performed the cathode ray experiment leading to the discovery of electrons is J.J. Thomson.

Learn more about electrons here:

brainly.com/question/11316046

#SPJ1

6 0
2 years ago
Other questions:
  • What volume of 15.6M NH4OH is needed to make 500. mL of 3.00M solution?
    11·1 answer
  • How is compound different from a mixture?
    10·2 answers
  • Which step of the scientific method involves obtaining resources for your question
    12·1 answer
  • Litmus paper can be used to determine the _______ of a substance.
    12·1 answer
  • How does muscle tissue help the stomach digest food ?
    13·1 answer
  • determine the type of the following chemical reaction: Mg(s) + 2HCl(aq)——-&gt; H2(g) + MgCl2(aq) a. single replacement reaction
    5·1 answer
  • In the Hall-Heroult process, a large electric current is passed through a solution of aluminum oxide Al2O3 dissolved in molten c
    11·1 answer
  • How would you make 5mls of a solution that is 2.0% lactose and 0.1M SPG buffer from separate stock solutions that are 6% lactose
    14·1 answer
  • A compound contains 73.47% carbon, 10.20% hydrogen and 16.33% by mass of oxygen. The
    13·1 answer
  • Identify the molecule with the highest boiling point. A(.C 6H 6 B(. NH 3 C(. OF 2 D(. CHCl 3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!