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3 years ago

1.

Chemistry

2 answers:

Nata [24]3 years ago

8 0

Oregon trail would be the best answer

irga5000 [103]3 years ago

3 0

1: A. National Road

2: B. Mostly by barge across the Chesapeake and Ohio Canal

3: C. Wilderness Road

4: C. Transcontinental Railroad

5. C. Gila Trail

I took the quiz and I have confirmed that these are the correct answers, I hope this assists you.

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Which of the species below can act as a lewis base? bf3 nf3 oh− alcl3?

IRINA_888 [86]

Among BF₃, NF₃, OH⁻ and ALCl₃ both NF₃ and OH⁻ acts as a lewis base.

Explaination:
According to lewis theory of acid and base, base is a specie which has either lone pair of electrons or is negatively charged. So, in the given compounds Nitrogen trifluoride contain lone pair of electron on nitrogen and Hydroxide contains a negative charge on oxygen. And botha are capable to donate these electrons to a lewis acid (electrophiles).

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3 years ago

The Arrhenius theory explains how the concentration of H

koban [17]

Answer:true

Explanation:

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2 years ago

A chemical reaction is occurring inside a beaker and the temperature of the beaker is monitored. What would the contents of the

Archy [21]

Answer:

The system is the Answer

Explanation:

System is the region which is taken into consideration.

While we perform a chemical reaction the system is the substance taken in the container.

So, A thermodynamic system is the amount of matter or the region in universe which is under the study.

The region outside the beaker are called as surroundings.

The beaker (the surface which separates the system from its surroundings) is said to be the boundary

System + surroundings = universe

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3 years ago

___ is the sacrifice involved in making one decision over another

Scilla [17]

Opportunity cost

Opportunity cost is the benefit, profit or value that could have been received or obtained but instead given up in favor of another alternative or course of action. Every situation has several alternatives and every resource has several alternative uses as well. Thus, every decision comes with it an opportunity cost.

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3 years ago

Jenna performed a lab in which she added a constant amount of heat to change ice to liquid water to water vapor. She measured th

stira [4]

I don't know because I'm in 5th grade but I will try

no because the temperature is changing from cold to hot to hotter hope I helped

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3 years ago