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
kati45 [8]
3 years ago
13

How many atoms of carbon are found in a 30.0 gram sample of the element?

Chemistry
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

1.50 × 10²⁴ atoms C

Explanation:

Step 1: Define

Molar mass of C - 12.01 g/mol

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.

Step 2: Use Dimensional Analysis

30.0 \hspace{3} g \hspace{3} C(\frac{1 \hspace{3} mol \hspace{3} C}{12.01 \hspace{3} g \hspace{3} C} )(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} C}{1 \hspace{3} mol \hspace{3} C} ) = 1.50375 × 10²⁴ atoms C

Step 3: Simplify

We are given 3 sig figs.

1.50375 × 10²⁴ atoms C ≈ 1.50 × 10²⁴ atoms C

You might be interested in
James exclaims to his chemistry teacher that a new element has been discovered that fits between Nickel and Copper on the period
myrzilka [38]

Aye you have the same class as me bruh I need help on some chemistry qustions

8 0
3 years ago
Read 2 more answers
How can you increase the momentum of an object?
Nataliya [291]

Answer:

(c) by increasing it's mass

4 0
2 years ago
Read 2 more answers
What is one difference between a mixture and a compound?
tekilochka [14]
D. a compound can only be separated into its components by chemical means
5 0
3 years ago
Read 2 more answers
(c) Assume you have an equilibrium mixture of [A], [B], and [C] at 298K and that the
djyliett [7]

Answer:

Explanation:

1. The amount of CaCO3 must be so small that  

P

CO

2

 is less than KP when the CaCO3 has completely decomposed. In other words, the starting amount of CaCO3 cannot completely generate the full  

P

CO

2

 required for equilibrium.

3. The change in enthalpy may be used. If the reaction is exothermic, the heat produced can be thought of as a product. If the reaction is endothermic the heat added can be thought of as a reactant. Additional heat would shift an exothermic reaction back to the reactants but would shift an endothermic reaction to the products. Cooling an exothermic reaction causes the reaction to shift toward the product side; cooling an endothermic reaction would cause it to shift to the reactants’ side.

5. No, it is not at equilibrium. Because the system is not confined, products continuously escape from the region of the flame; reactants are also added continuously from the burner and surrounding atmosphere.

7. Add N2; add H2; decrease the container volume; heat the mixture.

9. (a) ΔT increase = shift right, ΔP increase = shift left; (b) ΔT increase = shift right, ΔP increase = no effect; (c) ΔT increase = shift left, ΔP increase = shift left; (d) ΔT increase = shift left, ΔP increase = shift right.

11. (a)  

K

c

=

[

CH

3

OH

]

[

H

2

]

2

[

CO

]

; (b) [H2] increases, [CO] decreases, [CH3OH] increases; (c), [H2] increases, [CO] decreases, [CH3OH] decreases; (d), [H2] increases, [CO] increases, [CH3OH] increases; (e), [H2] increases, [CO] increases, [CH3OH] decreases; (f), no changes.

13. (a)  

K

c

=

[

CO

]

[

H

2

]

[

H

2

O

]

; (b) [H2O] no change, [CO] no change, [H2] no change; (c) [H2O] decreases, [CO] decreases, [H2] decreases; (d) [H2O] increases, [CO] increases, [H2] decreases; (f) [H2O] decreases, [CO] increases, [H2] increases. In (b), (c), (d), and (e), the mass of carbon will change, but its concentration (activity) will not change.

15. Only (b)

17. Add NaCl or some other salt that produces Cl− to the solution. Cooling the solution forces the equilibrium to the right, precipitating more AgCl(s).

19. (a)

Hope this helps :)

3 0
2 years ago
How do hormones travel throughout our body?
EleoNora [17]
Hormones travel through the body by using blood streams, such as veins. The hormones then get to the target cell by moving through the liquids surrounding the cells. They then change how the cell works, thus changing the body.
7 0
3 years ago
Other questions:
  • What are four ways you can separate mixture?
    10·2 answers
  • Label the key for the weather map.
    8·1 answer
  • in the reaction, Al2O3 + 6 HCl → __________H2O + 2AlCl3, what coefficient should be placed in front of H2O to balance the reacti
    14·2 answers
  • Say, for example, that you had prepared a buffer c, in which you mixed 8.203 g of sodium acetate, nac2h3o2, with 100.0 ml of 1.0
    12·1 answer
  • In vacuum, the speed of light is c= 2.998 x 108m/s. However, the speed generally decreases when light travels through media othe
    10·1 answer
  • what is the main difference between organisms that share many characteristics and organisms that do not
    8·1 answer
  • Which landscape is located at 42°N 75° W
    8·1 answer
  • Could someone please help me? You can ignore number 3:)
    7·1 answer
  • How does distillation remove hardness from water​
    15·2 answers
  • Need some help please?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!