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
ss7ja [257]
3 years ago
12

Morgan and Lily are studying the density of substances. After determining a block's mass and volume, they determine its density

using the formula, Density=mass/volume
Chemistry
1 answer:
slavikrds [6]3 years ago
3 0
The formula of Density is known as:

Density = mass/volume

Units: g/cm^3

Hope this helps!
You might be interested in
The following reactions take place in the ozone layer by the absorption of ultraviolet light.
____ [38]

Answer:

Option B will require a shorter wave length of light.

Explanation:

The bonding between Ozone (O3) and Oxygen (O2) can be used to explain why the breaking of oxygen into Oxygen radicals will require a shorter wave length.

  • The bond between Oxygen (O2) is a double bond while Ozone (O3) has an intermediate bond between a double bond and a single bond.
  • The bond order of Oxygen (O2) is equals 2 while that of Ozone (O3) is 1.5. Since the bond order of oxygen is higher, it will require more energy to break the bond compared to breaking the Ozone (O3) bond.
  • Recall that Energy is inversely proportional to wave length.
  • So it will require a shorter wave length to break the Oxygen (O2) into its radicals.
5 0
3 years ago
Determine the molality of a solution of methanol dissolved in ethanol for which the mole fraction of methanol is 0.135. Give you
Alja [10]

<u>Answer:</u> The molality of the solution is 0.11 m

<u>Explanation:</u>

We are given:

Mole fraction of methanol = 0.135

This means that 0.135 moles of methanol is present in 1 mole of a solution

Moles of ethanol = 1 - 0.135 = 0.865 moles

To calculate the mass for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of ethanol = 0.865 moles

Molar mass of ethanol = 46 g/mol

0.865mol=\frac{\text{Mass of ethanol}}{46g/mol}\\\\\text{Mass of ethanol}=(0.865mol\times 46g/mol}=39.79g

To calculate the molality of solution, we use the equation:

Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

Where,

m_{solute} = Given mass of solute (methanol) = 0.135 g

M_{solute} = Molar mass of solute (methanol) = 32 g/mol

W_{solvent} = Mass of solvent (ethanol) = 39.79 g

Putting values in above equation, we get:

\text{Molality of methanol}=\frac{0.135\times 1000}{32\times 39.79}\\\\\text{Molality of methanol}=0.106m\approx 0.11m

Hence, the molality of the solution is 0.11 m

6 0
3 years ago
How to determine reaction order in reactant?
Artyom0805 [142]
In order to determine, Order of reaction, we have to add all the exponents written in the Chemical form, on the Reactant species.

Hope this helps!
8 0
3 years ago
I need help please please
inna [77]

Answer:

B should be the answer, and ur low-key valid lol

Explanation:

6 0
3 years ago
Scientific knowledge is generally considered to have a positive effect on society. In which situation would scientific knowledge
avanturin [10]
D.
Misinterpretation of scientific knowledge for the influence of public opinion has been a repeating problem over the past, and usually creates a rift between the scientific community and the general public.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Question 3) A 1.00 L buffer solution is 0.250 M in HF and 0.250 M in LiF. Calculate the pH of the solution after the addition of
    12·1 answer
  • How does chromatography relate to gel electrophoresis
    15·1 answer
  • chemist is using a solution of HNO3 that has a pH of 3.75. What is [OH− ] for the solution? × 10es001-1.jpg M n = What is the pO
    6·2 answers
  • Water changes from a liquid to a gas in the process of evaporation. <br> true or false
    13·2 answers
  • Will baby oil and water form a solution
    9·2 answers
  • When an aqueous solution of strontium chloride is added to an aqueous solution of potassium sulfate, a precipitation reaction oc
    9·1 answer
  • True or false. When an area within an atom is crowded with electrons it is known as a dipole "moment False True
    9·2 answers
  • Jorge is sitting on a couch. Gravity exerts a downward force on him. Based on Newton's law of action-reaction, the other force a
    13·2 answers
  • Considering radiation weighting factors only, how many times more dangerous are alpha particles than protons?
    8·2 answers
  • Molar mass (easy but I’m lazy)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!