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
Tems11 [23]
3 years ago
7

I need help with 14 and 15 please!

Chemistry
1 answer:
Dima020 [189]3 years ago
8 0
Isotopes of an element will contain the same number of protons and electrons but will differ in the number of neutrons they contain. In other words, isotopes have the same atomic number because they are the same element but have a different atomic mass because they contain a different number of neutrons.
You might be interested in
What volume will 1.27 moles of helium gas occupy at 80.00 °C and 1.00 atm?
White raven [17]

Answer:

36.8 L

Explanation:

We'll begin by converting 80 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

T(°C) = 80 °C

T(K) = 80 + 273

T(K) = 353 K

Finally, we shall determine the volume occupied by the helium gas. This can be obtained as follow:

Number of mole (n) = 1.27 moles

Temperature (T) = 353 K

Pressure (P) = 1 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Volume (V) =?

PV = nRT

1 × V = 1.27 × 0.0821 × 353

V = 36.8 L

Thus, the volume occupied by the helium gas is 36.8 L

5 0
3 years ago
BRAINLIEST ANSWER! An Earth-like planet is 500 light years away. Why is this an obstacle for a manned space mission?
Over [174]
C sounds correct........
5 0
3 years ago
Read 2 more answers
Difference between qualitative and quantitative data in chemistry
const2013 [10]
Quantitative data is numerical.
Qualitative data is non-numerical.
Hope this helps.
have a great day.
7 0
3 years ago
Which of the following best explains why overfishing is considered a bad practice? a. Overfishing is not sustainable and ultimat
Nata [24]

Answer:

answer A because it's not sustainable and it is overfishing a population

4 0
3 years ago
Read 2 more answers
A sample of 0.200 moles of nitrogen occupies 0.400 L. Under the same conditions, what number of moles occupies 1.200 L
IRISSAK [1]

The number of mole of nitrogen that occupies 1.2 L under the same condition is 0.6 mole

<h3>Data obtained from the question </h3>
  • Initial mole (n₁) = 0.2 mole
  • Initial volume (V₁) = 0.4 L
  • Final volume (V₂) = 1.2 L
  • Final mole (n₂) =?

<h3>How to determine the final mole </h3>

The final mole can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both side n

PV / n = RT

Divide both side by P

V / n = RT / P

RT / P = constant

V / n = constant

Thus,

V₁ / n₁ = V₂ / n₂

0.4 / 0.2 = 1.2 / n₂

2 = 1.2 / n₂

Cross multiply

2 × n₂ = 1.2

Divide both side by 2

n₂ = 1.2 / 2

n₂ = 0.6 mole

Learn more about ideal gas equation:

brainly.com/question/4147359

#SPJ1

7 0
2 years ago
Other questions:
  • Donna and Ellis have been married for over 30 years which of the following is likely to be most important in their relationship
    13·1 answer
  • Through the process of photosynthesis, _ energy is transformed into _ energy
    10·2 answers
  • Does the reaction of a main-group metal oxide in water produce an acidic solution or a basic solution? Write a balanced equation
    10·1 answer
  • A geologist discovers a fault in a massive rock while out in the field. He notices that the fault occurs at an angle and that th
    13·2 answers
  • A rigid vessel contains water at 0.15 MPa (at 25 °C). The vessel is heated to the critical point of water. Calculate the fractio
    15·1 answer
  • Part A:
    7·2 answers
  • Which of the following statements BEST explains the data in the table?
    6·1 answer
  • When H forms a bond with H2O to form the hydronium ion H3O , this bond is called a coordinate covalent bond because
    12·1 answer
  • Describe one way in which advances in space technology have improved our understanding of objects in space.
    8·1 answer
  • Which compounds are bases in aqueous solution according to brønsted–lowry theory?.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!