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
saveliy_v [14]
3 years ago
11

20 POINTS!!!!

Chemistry
1 answer:
Y_Kistochka [10]3 years ago
8 0
A. neutrons 

Isotopes <span>contain equal numbers of protons but different numbers of neutrons in their nuclei.</span>
You might be interested in
A gas sample is held at constant temperature. What happens to the pressure of the sample if the volume is doubled and the number
Iteru [2.4K]

Answer:

If the volume is doubled and the number of molecules is doubled, pressure is unchanged

Explanation:

Step 1: Data given

Temperature = constant

Volume will be doubled

Number of molecules will be doubles

Step 2:

p*V = n*R*T

⇒ gas constant and temperature are constant

Initial pressure = n*R*T / V

Initial pressure = 2*R*T/2

Initial pressure =  RT

Final pressure = 4*RT / 4

Final pressure = R*T

If the volume is doubled and the number of molecules is doubled, pressure is unchanged

3 0
3 years ago
How many moles are in 6.80 x 10^23 atoms <br> of gold, Au?
frosja888 [35]

Answer:

1.13 moles Au

Explanation:

Moles Au = 6.80x10²³atoms / 6.023x10²³atoms/mole = 1.13 moles Au

8 0
3 years ago
Which of the following additions to alkenes occur(s) specifically in an syn fashion?
BlackZzzverrR [31]

Answer:

E) A, B, and C

Explanation:

Syn addition refers to the addition of two substituents on the same face or side of a double bond. This differed from anti addition which a occurs across opposite face of the double bond.

Hydrogenation, hydroboration and dihydroxylation all involve syn addition to the double bond, hence the answer chosen above.

8 0
3 years ago
Why is it important to offer evidence to support statements about experiments?
dexar [7]
So you have evidence that the experiment is true or correct.
8 0
3 years ago
The length of a vector arrow represents its magnitude and the point represents its direction
Viefleur [7K]

The answer is: True.

The magnitude of a vector is represented by the length of the arrow.

The arrow length is drawn according a chosen scale.

For example, the diagram shows a vector with a magnitude of 100 kilometers, if the scale used for constructing the diagram is 1 cm = 10 km, the vector arrow is drawn with a length of 10 cm.

The arrow has an obvious tail and arrowhead. The arrow points in the precise direction.

3 0
4 years ago
Read 2 more answers
Other questions:
  • What type of bonds hold metal atoms together
    12·1 answer
  • How does an objects mass influence how much force is needed to change its motion?
    13·2 answers
  • What type of mixture is air?
    12·1 answer
  • Two trays of lasagna are identical except for their thermal energies.
    11·2 answers
  • The air in a living room has a mass of 60 Kg and a specific heat of 1,020 J/kg°C. What is the change in thermal energy of the ai
    12·1 answer
  • You see a worm crawling along the ground and wonder if scientists consider it living or nonliving. Which item below would not be
    11·1 answer
  • 8. Water behind a dam, a moving car, and electricity moving in a circuit all are examples of
    11·1 answer
  • Who's the first person to reach the moon​
    12·2 answers
  • What intermolecular force attracts two non polar molecules to each other
    12·1 answer
  • 10. When a substance is analyzed using an electron microscope, it is found
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!