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
IRINA_888 [86]
3 years ago
6

Help with question 20

Chemistry
1 answer:
OleMash [197]3 years ago
4 0
For part a), density is g/mL. You have both the g, 300, and the mL, 100, so you simply did 300/100 = 3 g/mL
You might be interested in
A graph that demonstrates the amount of substance that dissolve in given quantity of solvent st specificied conditions
Basile [38]

Answer:

Beef curtains

Explanation:

8 0
3 years ago
Read 2 more answers
Chemistry
postnew [5]

There are 48.72 g  Fluorine ions

<h3>Further explanation </h3>

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison

%F in CaF₂ :

\tt \%F=\dfrac{2.Ar~F}{MW~CaF_2}\times 100\%\\\\\%F=\dfrac{2.19}{78}\times 100\5=48.72\%

mass of Fluorine :

\tt 48.72\%\times 200=97.44~g

So mass Fluorine ions(2 ions F in CaF₂⇒Ca²⁺+2F⁻) :

\tt =\dfrac{97.44}{2}=48.72~g

7 0
3 years ago
The boiling point of liquid nitrogen is 77 kelvin. It is observed that ice forms at the opening of a container of liquid nitroge
icang [17]

Answer:

The answer is "The First choice".

Explanation:

The whole question can be found in the file attached.

The water vapor inside the air freezes thru the entrance of its nitrogen. This is because liquid nitrogen has a very low temperature and seems to be sufficiently cold to condensed and freeze the steam of water. At air pressure, it has a boiling temperature of -196°C. Freezing the skin producing freeze or cold burns can be associated with direct contact.

7 0
3 years ago
In a laboratory experiment,john uses a mesh to separate soil particles from water.what technique of separation is he using?
loris [4]
John is using Filtration
6 0
3 years ago
Predict the decay process and write the nuclear equation of Cf- 255
matrenka [14]

Answer:

curium

−

243

,

252

/

99

Es,  

251

/

98

Cf,  

214

/

82

Pb

Explanation: Im not very good with this but here ya go!

8 0
2 years ago
Other questions:
  • The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
    12·2 answers
  • Enter a balanced equation for the reaction between aqueous lead (II) nitrite and aqueous lithium chloride to form solid lead (II
    15·1 answer
  • What is changed when matter undergoes a physical change?
    8·1 answer
  • "which compound would be expected to show intense ir absorption at both 3500 and 1733cm-1?"
    8·1 answer
  • An ideal gas is made up of gas particles that...
    11·1 answer
  • SOMEONE HELP PLS! I missed a day and I need help rn
    10·1 answer
  • When completing the diffusion of a dye through water, where does the 0 mm mark on your ruler go?
    15·1 answer
  • 33. Why does Fluorine exert a stronger pull than Chlorine on the valence electrons of another
    12·1 answer
  • Guys please helppp!!!!!
    13·1 answer
  • The chemical formula for acetone is: ch32co calculate the molar mass of acetone. round your answer to 2 decimal places.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!