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
sesenic [268]
3 years ago
12

Help Pleaseee!

Chemistry
2 answers:
jekas [21]3 years ago
8 0

Answer:

The correct answer is; 'The carbon sample would have three times the mass of the helium sample'.

Explanation:

Number of moles of carbon = 3.0 moles

Mass of 3 moles of carbon ,m= 3 moles\times 12 g/mol = 36 g

Number of moles of helium = 3.0 moles

Mass of 3 moles of helium,m' = 3 moles\times 4 g/mol = 12 g

Grams of carbon do we have more than grams of helium:

Mass of carbon > Mass of helium

\frac{m}{m'}=\frac{36 g}{12 g}=3

m =  3m'

The carbon sample would have three times the mass of the helium sample

bija089 [108]3 years ago
6 0
Protons  + and electrons - must be equal

3 moles of C has a mass of 36, 3 moles of He is 12

so the answer is :
The carbon sample would have three times the mass of the helium sample

hope this helps
You might be interested in
What is extensibility?​
Katena32 [7]

Answer:

Extensibility is a software engineering and systems design principle that provides for future growth.

Explanation:

hope ot helps good day

5 0
3 years ago
Classify the following substituents according to whether they are electron donors or electron acceptors relative to hydrogen by
igor_vitrenko [27]

Species that have a lone pair of electrons often donate electrons by resonance while substituents that are electron deficient take away electrons by resonance.

<h3>What is resonance?</h3>

The term resonace has to do with the movement of electron pairs in a molecule. Inductive effects has to do with the drawing of electron density towards an atom or bond.

The two effects depends on the nature of a substituent. For instance, species that have a lone pair of electrons often donate electrons by resonance while substituents that are electron deficient take away electrons by resonance.

The question is incomplete hence the exact nature of the substituents can not be determined.

Learn more about resonance: brainly.com/question/23287285?

8 0
3 years ago
Read 2 more answers
Which direction does air circulate into low pressure zones in the northern and southern hemisphere
Yuri [45]
<span>Now consider a low pressure area on a disk as shown below.A parcel of air at point A would move toward the center of the low pressure area. That movement would take it farther away from the center of the disk and therefore it would move to the west. A parcel of air at B would move toward the center of the low pressure area which would also take it closer to the center of the spinning disk where its speed is greater than the surrounding points. It would appear to move to the east. With A moving to the west and B moving to the east the line from A to B is rotating counterclockwise.</span>
5 0
4 years ago
Read 2 more answers
Cu is in FCC structure. We know that even at close to melting temperature, vacancies are still sparsely distributed, i.e., it is
sveticcg [70]

Answer:

6

Explanation:

FCC is face centered cubic lattice. In FCC structure, there are eight atoms at the eight corner of the cubic unit cell and one atom centered in each of the faces. FCC unit cells consist of four atoms, (8/8) at the corners and (6/2) in the faces.

Given that, Cu has FCC structure and it contains a vacancy at origin (0, 0, 0). And there is no other vacancy directly adjacent to the vacancy at the origin. So, all the adjacent positions contain Cu atoms. Hence, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy.

the above FCC unit cell clearly indicates that there are six adjacent atoms adjacent to the vacancy at origin

So, the total number of adjacent atoms of the vacancy at origin can jump into this vacancy is 6.

5 0
3 years ago
If steel (a metal) is hard and granite (a nonmetal) is hard, why don’t we make automobile engines out of granite?
Charra [1.4K]
Because. just because.
4 0
3 years ago
Other questions:
  • Physical activity and exercise typically lead to __________.
    15·2 answers
  • Which of the following was a cause of the French and Indian War?
    10·2 answers
  • Write a net ionic equation for the reaction of aqueous acetic acid and aqueous potassium hydroxide
    6·1 answer
  • Which of the following is a chemical property? A. Boiling point B. Electrical conductivity C. Flammability D. Malleability
    5·1 answer
  • Which formula represents the compound commonly known as phosphine <br> PH<br> PH2<br> PH3<br> PH4
    15·2 answers
  • A cylinder of iron has a mass of 23.45 g. If it is placed on an electronic balance that reports all masses 18.00% too low due to
    10·1 answer
  • Help please, 44 to 45, calculate the answers to the following problems. Use the following equation as the basis of your calculat
    10·2 answers
  • What is a line graph
    15·1 answer
  • What happens when an atom of sulfur combines with two atoms of chlorine to produce SCl2?
    5·1 answer
  • Explain how you would find the solubility of a solute
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!