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
Salsk061 [2.6K]
3 years ago
11

The density of an alcohol is 0.788 g/mL. What volume in microliters, μL, will correspond to a mass of 20.500 mg?

Chemistry
1 answer:
postnew [5]3 years ago
6 0

Answer:

B.  26.0 μL.

Explanation:

Hello,

In this case, taking into account that given the mass and density, the volume is computed to be:

V=\frac{m}{\rho} =\frac{25.000mg}{0.788g/mL}*\frac{1g}{1000mg}*\frac{1000\mu L}{1mL} \\  \\V=26.0\mu L

Thus, answer is B.  26.0 μL.

Best regards.

You might be interested in
What is the mass percent of water in copper (II) sulfate?
Veseljchak [2.6K]
The answer is sulfate pentahydrate 


  Hope this helps you :D
8 0
3 years ago
Which element has 19 electrons surrounding the nuclei of its atoms?
QveST [7]
I think its potassium
5 0
3 years ago
HELP!!!
Tasya [4]
D: urethra
20 characters necessary for answer so that's what this typing Is for
7 0
3 years ago
A gas has a pressure of 167.1 kPa. What is this pressure in atm?
Aleksandr-060686 [28]

Answer:

167100atm

Explanation:

167.1*1000=167100 atm

3 0
3 years ago
Calculate the molar mass of a gas
spin [16.1K]

Answer:

MOLAR MASS = 32 g/mol

Explanation:

Condition of standard temperature and pressure(STP) are as follow:

Temperature = 273 K

Pressure = 1 atm (or 100000 Pa)

Here atm is atmosphere and Pa is Pascal

STP conditions arte used for measuring gas density and volume using Ideal Gas Law.Here 1 mole of ideal gas occupies 22.4 L of volume.

According toi Ideal Gas Equation :

PV = nRT

where P = pressure, n= number of moles, V = volume ,R= Ideal Gas Constant and T= temperature

n=\frac{PV}{RT}

From question:

V=280 ml = 0.28 L

P = 1 atm

R=0.08205 L atm/K mol

T=273 K

Putting values in above formula :

n=\frac{1\times .280}{0.08205\times 273}

n = 0.0125 moles

Now n=\frac{given\ mass}{Molar\ mass}

Molar\ mass=\frac{given\ mass}{n}

given mass = 0.4 g (given)

Molar\ mass=\frac{0.4}{0.0125}

On solving we get:

Molar mass = 32 g/mol

4 0
3 years ago
Other questions:
  • What is the law of redox reactions?
    7·1 answer
  • Consider the ionic compound that is the combination of the Chromium (III) and hydroxide ions. How many chromium atoms would be p
    12·1 answer
  • Hi i'm 9 and i need a fortnite girlfriend<br> and yes the subject is chemistry :D
    8·2 answers
  • The density of wind-packed snow is estimated to be 0.35 g/cm^3. A flat roof that is 35 by 43 feet has 28 inches of snow on it. H
    15·1 answer
  • Which civilization formed a confederation thay may have impacted the us government
    13·1 answer
  • Classify this reaction: 2Al+N2-&gt;AlN.
    11·1 answer
  • What is a societal law
    9·2 answers
  • Which statement describes the charge of an
    9·1 answer
  • 150.0 mL of a gas is collected at 50 kPa, What will the volume be at 125kpa?
    6·1 answer
  • Ppppoooooooooiiiiiiiiiinnnnnnnnnttttttttssssssss
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!