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
earnstyle [38]
3 years ago
15

Number 13 please fast answer

Chemistry
1 answer:
Nata [24]3 years ago
3 0

Answer: B. Nitrogen

Explanation:

Nitrogen: Abundant and Inert

It's a common misconception that oxygen is the most abundant gas in the air breathed on Earth; that honor goes to nitrogen, which makes up 78 percent of the air.

Hope this helps!!! Good luck!!! ;)

You might be interested in
The atomic mass of sulfur is 32.1 amu, and the atomic mass of oxygen is 16.0 amu. To the nearest tenth of a percent, what is the
Zielflug [23.3K]

Answer:

\%\ Composition\ of\ sulfur=40.1\ \%

Explanation:

Percent composition is percentage by the mass of element present in the compound.

Given , Mass of sulfur= 32.1 amu

Mass of oxygen = 16.0 amu

Mass of sulfur trioxide SO_3 = 32.1 amu + 3*16.0 amu = 80.1 amu

\%\ Composition\ of\ sulfur=\frac{Mass_{sulfur}}{Mass_{SO_3}}\times 100

\%\ Composition\ of\ sulfur=\frac{32.1\ amu}{80.1\ amu}\times 100=40.1\ \%

6 0
3 years ago
According to the video on nuclear power plants, what does PWR stand for?
Radda [10]

PWR stands for many things. Since you're talking about nuclear power reactors I think PWR stands for pressurized water reactor.

A pressurized water reactor follows many steps but the main goal is to obtain thermal energy from water.



Hope it helped,



BioTeacher101

6 0
3 years ago
What type of heat transfer warms our oceans and atmosphere
Arisa [49]
The answer is Conduction. I hope this helps!
3 0
4 years ago
A chemistry student needs 60.0 g of 2-ethyltoluene for an experiment. He has available 1.5 kg of a 15.3% w/w solution of 2 ethyl
Mila [183]

Answer:

392 g

Explanation:

The given concentration tells us that<em> in 100 g of solution, there would be 15.3 g of 2-ethyltoluene</em>.

With that in mind we can<u> calculate how many grams of solution would contain 60.0 g of 2-ethyltoluene</u>:

  • Mass of solution * 15.3 / 100 = 60.0 g 2-ethyltoluene
  • Mass of solution = 392 g
8 0
3 years ago
Think about what would happen if this substance were first in the solid phase, then melted in a liquid. What can you say about t
alexira [117]

Answer:

The melting point of the solid is higher in temperature then it is compared to the freezing point of the liquid.

Explanation:

3 0
3 years ago
Other questions:
  • A fact is something that has been proven to be true.
    12·2 answers
  • Which element of art would this tool help an artist to understand?
    15·2 answers
  • The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. Which
    13·1 answer
  • When a 3.00 grams sample of a compound containing only c, h, and o was completely burned, 1.17 grams of h2o and 2.87 grams of co
    6·1 answer
  • Enter the appropriate symbol for an isotope of potassium-39 corresponding to the isotope notation AZX.
    7·2 answers
  • Apply solubility rules of inorganic slats to predict the occurance of precipitation reactions?
    5·1 answer
  • What is the temperature -71 oC expressed in Kelvin?<br> Group of answer choices
    14·1 answer
  • A student finds that 4700 J of heat are required to raise the temperature of 250.0 g of metal X from 22°C to 63°C. Based on the
    12·1 answer
  • How many grams are in 3.80 mol of sodium chloride (NaCl)?
    11·1 answer
  • Vegetarians do not eat animal products but rather derive their protein from plant sources. Which type of protein do vegetarian f
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!