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
belka [17]
3 years ago
5

At night, the Moon appears bright. Which of the following explains this?

Chemistry
2 answers:
Lady bird [3.3K]3 years ago
6 0
The answer is
<span>a. The Moon reflects the light produced by the Sun.</span>
vivado [14]3 years ago
6 0

When the surface of moon reflects light from the sun, it results in shining of moon and regardless the fact that sometimes moon seems to shine brightly, the moon reflects between 3 to 12 percent of the sunlight which hits it. The moon brightness depends upon the position of the moon in orbit around the planet from the earth.

Hence, the correct option is A that is the Moon reflects the light produced by the Sun.

You might be interested in
What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimet
STALIN [3.7K]

Answer:

Hi. Increased evaporation would be the greatest difference.

Explanation:

Have you ever had a drink in a mug with a lid? When you would remove the lid, all of the liquid on the lid is the liquid that would evaporate if there was no lid.

6 0
2 years ago
Read 2 more answers
Nonmetals are ___.
Shkiper50 [21]
Poor conductors of heat
5 0
3 years ago
What is earths spheres
Oliga [24]
Geosphere >> Which is Earth's entire solid body..

Hydrosphere >> Which is all the "liquid" water on Earth..

Atmosphere >> Which is the few layers of "gasses" that are surrounding Earth..

Cryosphere >> Which is all the "frozen" water on Earth..

Biosphere >> Us! All the living organisms on Earth..


6 0
3 years ago
Read 2 more answers
Ammonia gas will react with oxygen gas to yield nitrogen monoxide gas and water vapor.
ruslelena [56]

Answer:

a) <u>0.168 moles O2</u>

<u>b) </u> <u>9.50 grams O2</u>

<u>c) 0.01662 kg NO</u>

<u>d)</u>88.9 %

Explanation:

Step 1: Data given

Molar mass of NH3 = 17.03 g/mol

Molar mass of O2 = 32 g/mol

Molar mass of NO = 30.01 g/mol

Molar mass of H2O = 18.02 g/mol

Step 2: The balanced equation:

4NH3 + 5O2 → 4NO + 6H2O

a. How many moles of ammonia will react with 6.73g of oxygen?

Calculate moles of oxygen = mass O2/ molar mass O2

moles oxygen =  6.73 grams / 32.00 g/mol = 0.210 moles

Calculate moles of NH3

For 4 moles of NH3 we need 5 moles O2 to produce 4 moles NO and 6 moles H2O

For 0.210 moles O2 we need 4/5 *0.210 = <u>0.168 moles O2</u>

<u />

b. If 6.42g of water is produced, how many grams of oxygen gas reacted?

Calculate moles of H2O = 6.42 grams / 18.02 g/mol = 0.356 moles

Calculate moles of O2:

For 4 moles of NH3 we need 5 moles O2 to produce 4 moles NO and 6 moles H2O

For 0.356 moles H2O we'll need 5/6 * 0.356 = 0.297 moles O2

Calculate mass of O2 = moles O2 * molar mass O2

Mass O2 = 0.297 moles O2 * 32.00 g/mol =  <u>9.50 grams O2</u>

c. If the reaction uses up 9.43105 g of ammonia, how many kilograms of nitrogen monoxide will be formed?

Calculate moles of ammonia = 9.43105 grams / 17.03 g/mol =0.5538 moles

Calculate moles of NO:

For 4 moles of NH3 we need 5 moles O2 to produce 4 moles NO and 6 moles H2O

For 0.5538 moles of NH3 we'll have 0.5538 moles NO

Calculate mass of NO

Mass NO = 0.5538 moles * 30.01 g/mol = 16.62 grams = <u>0.01662 kg NO</u>

<u />

<u />

d. When 2.51 g of ammonia react with 3.76 g of oxygen, 2.27 g of water vapor are produced. What is the percentage yield of water?

<em>Calculate moles of NH3</em> = 2.51 grams / 17.03 g/mol = 0.147 moles

<em>Calculate moles of O2 </em>= 3.76 grams / 32 g/mol = 0.118 moles

<em>Determine the limiting reactant</em>

O2 is the limiting reactant, it will completely be consumed (0.118 moles)

NH3 is in excess. There will react 4/5 * 0.118 = 0.0944 moles

There will remain 0.147 - 0.0944 = 0.0526 moles

<em>Calculate moles H2O</em>: For 0.118 moles O2 we'll have 6/5 * 0.118 = 0.1416 moles H2O

<em>Calculate mass H2O</em> = 0.1416 moles * 18.02 g/mol = 2.552 grams H2O

<em>Calculate % yield</em> = (2.27/2.552)*100 % = <u>88.9 %</u>

4 0
2 years ago
As the atomic numbers of the elements in column IIA increase, the size of the atoms generally
joja [24]

Answer:

Increase

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • The density of solid aluminum is 2.70 . If a 1g peice of aluminum is dropped in a cup of water, it will . (The density of water
    14·1 answer
  • Give the number of covalent bonds in Xenon and phosphorus
    11·1 answer
  • Air has a lower specific heat then water once the sun goes down will the air or the water cool faster? What is the independent a
    12·1 answer
  • According to the law of universal gravitation, any two objects are attracted to each other. The strength of the gravitational fo
    8·2 answers
  • Efforts to restore wetlands and forests along the coast will most likely _______.
    14·1 answer
  • What is the total number of electrons shown in this Lewis structure of carbon dioxide? A. 8 B. 12 C. 16 D. 24
    6·1 answer
  • Some organisms, like the platypus, are difficult to classify as they have characteristics which fall intæ multiple
    8·1 answer
  • The force applied to an object in one direction is greater than the force applied in the opposite direction. This causes the obj
    11·1 answer
  • Hi;) this is easy i just need someone to explain it to me
    7·1 answer
  • For which applications would you choose liquid over gas or solid
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!