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
kotykmax [81]
3 years ago
5

20. Which of the following are pure substances?

Chemistry
1 answer:
Juliette [100K]3 years ago
3 0
The answer is III and V
You might be interested in
The law of partial pressures was developed by ___________.
fomenos

Answer:

John Dalton

Explanation:

3 0
3 years ago
Why isn't there a lunar eclipse every time Earth is in between the sun and<br> the Moon?
DerKrebs [107]
Because the Earth's orbit around the sun is not in the same plane as the Moon's orbit around the Earth.
8 0
3 years ago
Which two solutions, when mixed together, will undergo a double replacement reaction and form a white, solid substance
Scrat [10]

Which two solutions, when mixed together, will undergo a double replacement reaction and form a white, solid substance?


1. NaCl(aq) and LiNO3(aq)

2. KCl(aq) and AgNO3(aq)  answer

3. KCl(aq) and LiCL(aq)

4. NaNO3(aq) and AgNO3(aq)


2 is the answer because AgCl is formed and that is a white ppt.

5 0
3 years ago
Read 2 more answers
4 On a bright, sunny day, which time of day can
Marina CMI [18]
It has to be J. 12:00am cause at night that’s when everything
5 0
3 years ago
A 0.175 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.27° in a 1-dm sample
-BARSIC- [3]

Answer:

The specific rotation of D is 11.60° mL/g dm

Explanation:

Given that:

The path length (l) =  1 dm

Observed rotation (∝) = + 0.27°

Molarity = 0.175 M

Molar mass = 133.0 g/mol

Concentration in (g/mL) = 0.175 mol/L × 133.0 g/mol

Concentration in (g/mL) = 23.275 g/L

Since 1 L = 1000 mL

Concentration in (g/mL) = 0.023275 g/mL

The specific rotation [∝] = ∝/(1×c)

= 0.27°/( 1  dm ×  0.023275 g/mL )

= 11.60° mL/g dm

Thus, the specific rotation of D is 11.60° mL/g dm

3 0
3 years ago
Other questions:
  • Why aren't sharks extinct?
    12·2 answers
  • The compound methyl butanoate smells like apples. Its percent composition is 58.8% C, 9.8% H, and 31.4% O, and its molar mass is
    12·2 answers
  • Explain the difference between reflection and refraction
    13·2 answers
  • a mole of carbon dioxide (co2) has 12.0 grams of carbon (c) and 32.0 grams of oxygen (o). what is the percent composition of car
    11·1 answer
  • What is a cation and where can you find it in the periodic table??<br><br> Help pls
    14·2 answers
  • Sunny makes a poster showing the levels of
    11·2 answers
  • Which question is most important to developmental psychology?
    9·1 answer
  • (True or False) Only an odd number of orbitals is possible for any electron sublevel?
    13·2 answers
  • How many grams of AgNO3 are needed to prepare a 75.00 mL solution that is 6.5% (m/v)?
    13·1 answer
  • Is it possible for cells to overcome the effects of alkylating agents? how?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!