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
Ede4ka [16]
3 years ago
8

How many molecules are in 189.5 grams of no2?

Chemistry
1 answer:
xz_007 [3.2K]3 years ago
5 0
<span>NO2 weighs 46.005 grams per mol. There are 6.02x10^23 molecules in a mol. In the given sample of 189.5 grams, there are 4.12 mols. This means that there are 2.48x10^24 molecules of NO2 in the given sample.</span>
You might be interested in
The radius of a lithium atom is 130 picometers, and the radius of a fluorine atom is 60 picometers. The radius of a lithium ion,
natali 33 [55]

Answer:

A positive ions is always smaller than the corresponding atom.

A negative ion is always larger than the corresponding atom.

Explanation:

The reason for this is that, when a positive ion is formed, a full shell is usually removed with its electrons thereby reducing the size of the electron cloud and decreasing the size of the electron cloud.

A negative ion is formed by addition of more electrons to the electron cloud hence it spreads out. Interelectronic repulsion accounts for the larger size of the negative ion.

3 0
3 years ago
In the reaction 2H2(g) + O2(g) ® 2H2O(g), the volume ratio of H2 to H2O is __________.
Nadusha1986 [10]
2:2 is the answer to your question
5 0
4 years ago
What is the valence electron of manganese?​
DIA [1.3K]

Answer:

25th electron

Explanation:

the last electron is the valence electron. Assuming it has equal numbers of protons and electrons, then the 25th electron is the valence.

6 0
3 years ago
Read 2 more answers
Complete the pie chart formula.<br><br> (Category/ ) × 360° = Portion of graph.
iVinArrow [24]

Answer:

A toy car has a 1.5-A current, and its resistance is 2 . How much voltage does the car require?

 V

Explanation:

4 0
3 years ago
Describe the process of convection and how it contributes to seafloor spreading
kobusy [5.1K]

Answer:

Seafloor spreading and other tectonic activity processes are the result of mantle convection. ... Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense.

8 0
3 years ago
Read 2 more answers
Other questions:
  • How would you determine the proper number of significant figures of a Liquid using a graduated cylinder
    15·1 answer
  • Thallium-207 emits a beta particle
    12·1 answer
  • Astudent prepareda calibration curve by plotting absorbance of the standards against the [FeSCN2+] molar concentration (M). The
    5·1 answer
  • A balloon contains 0.950 mol of nitrogen gas and has a volume of 25.5 L. How many grams of N2 should be released from the balloo
    15·1 answer
  • How many moles are there in 0.67 L of a 0.50 M KBr solution?
    5·1 answer
  • . Which is stronger: the covalent bond that holds atoms together within a molecule or the electrical attraction between two neig
    14·1 answer
  • An ionic compound is formed when there is a reaction between the elements
    6·1 answer
  • Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooke
    9·2 answers
  • What is the number of molecules of 140 g of CO2?
    15·1 answer
  • Definition empirical evidence
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!