Chemistry College

10) Explain which substance(s) would you expect to be a gas at standard
temperature and pressure (STP).
NI3
BF3
PC13
A) BF3
Its molecules are nonpolar and, therefore, are subject only to
dispersion forces.
B) NI3
Its molecules are polar and possess dipole-dipole interactions
therefore allowing them to exist as a gas.
C) PCL3
Its molecules are slightly polar and, therefore, possess dipole-
dipole interactions. However, they are weak enough to allow it
to exist as a gas.
D) Nlz and BF3
Both molecules are very light in mass. Therefore, they have
weak dispersion forces which causes them to be attracted very
weakly and exist as a gas.

10) Explain Which Substance(s) Would You Expect To Be A Gas At Standardtemperature And Pressure (STP).NI3BF3PC13A)

Answers

Answer 1

Answer:BF3

Explanation:USA test prep

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what does cost-effective mean? im kind of confused on cost-effective and time-effective things and i keep getting mixed up :(

Answers

Cost-effective definition: producing good results without costing a lot of money. E.g: that machine is very cost effective, it made 200 shirts with only a dollar.

Time effective definition: how well time was used. E.g that machine is very time-effective, it made 200 pants in one hour!

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hydrodistillation explain ????​

Answers

Answer:

Explanation:

Hydrodistillation is a traditional method for the extraction of bioactive compounds from plants. In this method, plant materials are packed in a still compartment then water is added in sufficient amount and brought to a boil. ... The vapor mixture of water and oil is condensed by indirect cooling with water.

A car is traveling 70km in 45 minutes. How many miles an hour is the car traveling?

Answers

52

Explanation:

70x45÷60= 52

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