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
MakcuM [25]
3 years ago
13

How can you find density mathematically ?

Chemistry
1 answer:
Leni [432]3 years ago
6 0

Answer:

d=m/v

Explanation:

density equals mass over volume. you take your mass and put it in the numerator and your volume in the denominator. You then divide the numbers and round to the nearest tenth or hundredth.

You might be interested in
What happens to a gas as it is cooled below 0*C
Damm [24]

Sorry but it depends on the gas in question and it's temperature of condensing /boiling point if this it 0° it will turn liquid

7 0
4 years ago
Read 2 more answers
What is the molar concentration of [H3O+] in a cola that has a pH of 3.120?
ELEN [110]

Answer:

  • [H₃O⁺] = 7.586×10⁻⁴ M

Explanation:

The <em>pH</em> of a solution is a measure of the <em>molar concentration of </em><em>H₃O⁺</em> ions in the solution.

The mathematical expresssion that states the relation between the molar concentration of H₃O⁺ ions and the pH of the solution is:

  • pH = - log [H₃O⁺].

This is pH is numerically equal to the negative decimal logarithm of the  molar concentration of H₃O⁺.

The square brackets are used to indicate molar concentration.

Thus:

  • pH = - log [H₃O⁺] ← equation
  • 3.120 = -log [H₃O⁺] ← substituting values
  • - 3.120 = log [H₃O⁺] ← product property of the multiplication
  • 10^{- 3.120}=[H_3O^+] ← antilogarithm property
  • [H₃O⁺] = 7.586×10⁻⁴ M ← result
8 0
3 years ago
How many moles of methane are in 7.31x10^25 molecules?
lana [24]

Answer:

121.37 moles.

Explanation:

Always one mole of any molecule contains Avogadro number of molecules.

So one mole of methane contains 6.023*10^23 molecules.

Now we need number of moles of methane in 7.31*10^25 molecules.

This is just cross multiplication stuff.

6.023*10^23 molecules —————- 1 mole

7.31*10^25 molecules ——————- ?

= (7.31*10^25) / (6.023*10^23)

= 121.37 moles.

8 0
3 years ago
Does anyone have a course hero account they can look at for me?
Nady [450]

Sure, what's the questions and I can get it for you, and if need further assist you.

3 0
3 years ago
The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n =
Dvinal [7]

Answer:

If the moles of gas are tripled, the volume must also triple.

Explanation:

According to Avogadro law,

Equal volume of all the gases at same temperature and pressure have equal number of molecules.

The number of moles and volume are directly related to each other. By increasing the number of moles volume also goes to increase with same ratio.

When number of moles decreases the volume also goes to decrease at constant temperature and pressure.

Mathematical expression:

V ∝ n

V = Kn

V/n = k

When volume is changed from V₁ to V₂ by changing the number of moles from n₁ to n₂. Then expression will be,

V₁/n₁ = V₂/n₂

5 0
3 years ago
Other questions:
  • Which is not a hydrogenous sediment?
    8·2 answers
  • Bases increase the concentration of hydronium ions by donating hydroxide ions to water molecules.
    9·1 answer
  • What is the oxidation number of nitrogen in aluminum nitride, aln?
    8·1 answer
  • Paintball is a popular recreational activity that uses a metal tank of compressed carbon dioxide or nitrogen to launch small cap
    7·1 answer
  • Madison was reading about force in her science textbook and came across a lab that she wanted to do. Madison took detailed notes
    15·1 answer
  • The force produced by the pull of the earth's gravity on an object is called what?
    11·2 answers
  • Perform the following calculations, then round off each answer to the proper number of significant figures: 1210.0 g + 157.22 g
    5·1 answer
  • About how long is 1 meter?
    12·2 answers
  • Classify these substances as acidic, basic, or neutral:
    11·2 answers
  • Which statements describe the relationship between the area and the bioversity
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!