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
Elza [17]
3 years ago
14

Pure substance can be __ and __

Chemistry
1 answer:
Aleksandr [31]3 years ago
4 0
It can be an element or a compound
You might be interested in
Most cars use water to cool their engines. Ethylene glycol, propylene glycol, or methanol may be added to the water, especially
NemiM [27]

Answer:

B

Explanation:

8 0
3 years ago
Does anyone have the answer sheet for all of Cell energy cycle gizmo part c?
FinnZ [79.3K]

Answer:

No but i wish

Explanation:

7 0
3 years ago
Why atomic mass is an average vàlue​
lukranit [14]

Answer:

The atomic mass is the average number of protons and neutrons for all natural isotopes of an element. It is a decimal number.

Explanation:

Atomic Mass and Mass Number Example :

Hydrogen has three natural isotopes: 1H, 2H, and 3H. Each isotope has a different mass number.

1H has 1 proton. Its mass number is 1. 2H has 1 proton and 1 neutron. Its mass number is 2. 3H has 1 proton and 2 neutrons. Its mass number is 3. 99.98% of all hydrogen is 1H 0.018% of all hydrogen is 2H 0.002% of all hydrogen is 3H Together, they give a value of atomic mass of hydrogen equal to 1.0079 g/mol.

4 0
3 years ago
Read 2 more answers
Nitrogen has two isotopes. One has an atomic mass of 14.003
Ilia_Sergeevich [38]

Answer:

d= 14.007 amu

Explanation:

Abundance of N¹⁴ = 99.63%

Abundance of N¹⁵ = 0.37%

Atomic mass of N¹⁴ = 14.003 amu

Atomic mass of N¹⁵ = 15.000 amu

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass = (14.003 × 99.63)+(15.000× 0.37) /100

Average atomic mass =  1395.12 + 5.55 / 100

Average atomic mass  = 1400.67/ 100

Average atomic mass = 14.007 amu.

6 0
3 years ago
What are the properties of seismic waves?
natima [27]

Answer: incompressibility, rigidity, and density

Explanation:

6 0
2 years ago
Other questions:
  • The rate of product formation by an enzyme-catalyzed reaction would be increased by
    12·1 answer
  • Whats 2×2 rhdbdjdjddjdjkdjdbdbfbdbxb​
    6·2 answers
  • I'm so confused. If anyone could help me that would be amazing!
    15·1 answer
  • How many grams are in 0.02 moles of beryllium iodide
    8·1 answer
  • When an object floats in water, it displaces a volume of water that has a weight equal to the weight of the object. If a ship ha
    9·1 answer
  • Given that Cu + 2HCI Cu2+ + 2CI- + H2(g) has an overall reduction potential of –0.34 V, what is a valid prediction about how thi
    5·2 answers
  • I need help, idk how to do PV=nRT
    10·1 answer
  • Consider the reaction: A(aq) + 2B (aq) === C (aq). Initially 1.00 mol A and 1.80 mol B
    12·1 answer
  • How do clouds affect solar energy (radiation)?
    7·1 answer
  • Suppose green peas and sugar got mixed up . Which method you will use to separate them. Justify your answer .​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!