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
Neporo4naja [7]
4 years ago
7

Calculate each of the following quantities. (a) mass in kilograms of 3.7 x 1020 molecules of NO2

Chemistry
1 answer:
HACTEHA [7]4 years ago
7 0

Answer:

The answer to your question is:  0.028 kg of NO2

Explanation:

Data

3.7 x 10²⁰ molecules of NO2 in kg

MW of NO2 = 14 + (16 x 2) = 14 + 32 = 46 kg

                   1 mol of NO2 ---------------------  6.023 x 10 ²³ molecules

                   x                     --------------------- 3.7 x 10²⁰ molecules

                   x = 3.7 x 10²⁰ x 1 / 6.023 x 10 ²³

                   x = 0.00061 mol

         

                 1 mol of NO2 ---------------------  46 kg of NO2

                 0.00061 mol     ------------------    x

                 x = 0.00061 x 46/1

                x = 0.028 kg of NO2

You might be interested in
Type the letter that represents the correct location for each particle type below.
DerKrebs [107]
The electrons are found in shells or orbits that surround the nucleus of an atom

Protons and neutrons are found in the nucleus . They group in the center of the atom
4 0
3 years ago
Read 2 more answers
A space probe on the surface of mars sends a radio signal back to earth,a distance of 7.19 ×10⁷ km. Radio travel at the speed of
lys-0071 [83]

Answer:

240 seconds

Explanation:

Data Given:

Distance Radio travel to earth = 7.19 ×10⁷ km

Speed of this radio signal = 3.00 ×10⁸ m/s

Solution:

First convert Km to m

1 km = 1000 m

7.19 ×10⁷ km = 7.19 ×10⁷ x 1000 = 7.19 × 10¹⁰m

Formula used to calculate time

            Speed (S) = distance (d) / time (t)

rearrange above equation for time

            time (t) = distance (d) / Speed (S) . . . . . . . . .(1)

Put values in equation 1

            time (t) = 7.19 × 10¹⁰/ 3.00 ×10⁸ m/s

            time (t) = 240 s

So 240 seconds it take for the signal to reach the earth

6 0
4 years ago
Which of the following are analogous features? A. dolphin flippers and squirrel arms B. elephant trunks and pig snouts C. rabbit
masya89 [10]

Answer:

Explanation:

the answer is rabbit fur and chicken feathers i did that and i got it right i did a quiz i am in middle school 7th grade but here you go the answer

6 0
3 years ago
Which of Earth's Spheres take up most of the Earth's surface?
sasho [114]
Answer is: hydrosphere
8 0
3 years ago
Batteries are a source of __________ energy.<br> chemical<br> potential<br> mechanical
dimaraw [331]

Answer:

Batteries store chemical energy

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • What type of bond would form between two atoms of phosphorus?
    5·2 answers
  • How do you separate iron filings toothpicks sand sugar chalk powder small pebbles
    13·1 answer
  • In the laboratory a student finds that it takes 44.0 Joules to increase the temperature of 10.6 grams of solid zinc from 24.9 to
    8·1 answer
  • Which of the following is the best definition of an independent variable?
    8·1 answer
  • How is ammonia used or found in nature?
    11·1 answer
  • What are observable changes when burning a log?
    10·2 answers
  • What do the circles in the Bohr model represent?
    6·1 answer
  • What is the percent composition of acetaminophen (C8H9NO2).
    10·1 answer
  • Which metal pan should the chef choose because it undergoes the largest temperature change for a given input of energy?
    14·2 answers
  • Differences between bright half and ​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!