The question is incomplete. the complete question is:
A chemistry student needs 35.0 g of pentane for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of pentane is . Calculate the volume of pentane the student should pour out.Round your answer to 3 significant digits.
Answer: The volume of pentane the student should pour out is 55.9 ml
Explanation:
Density is defined as the mass contained per unit volume.
To calculate volume of a substance, we use the equation:
We are given:
Density of pentane =
Mass of pentane = 35.0 g
Putting values in above equation, we get:
(Conversion factor: )
Hence, the volume of pentane is 55.9 ml
Answer:
Lavender
Explanation:
Lavender is the anticoagulant, commonly used for hermatology tests
Definite: Specific, clearly stated
Example: That man(specifically tells which man)
Indefinite: Unspecific, general
Example: A man(which man is unclear)
Answer:
See explanation
Explanation:
All molecules possess the London dispersion forces. However London dispersion forces is the only kind of intermolecular interaction that exists in nonpolar substances.
So, the only kind of intermolecular interaction that exists in dimethyl ether is London dispersion forces.
As for ethyl alcohol, the molecule is polar due to the presence of polar O-H bond. In addition to London dispersion forces, dipole-dipole interactions and specifically hydrogen bonding also occurs between the molecules.
Because ethyl alcohol is polar, it is more soluble in water than dimethyl ether.
It would take 1.16 h for the runner to finish the race
.
<em>Step 1. </em>Convert <em>kilometres to miles</em>.
11 km × (0.621 mi/1 km) = 6.83 mi
<em>Step 2</em>. Calculate the <em>time</em>.
Time = 6.83 mi × (1 h/5.7 mi) = 1.16 h