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Acids and Bases

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Una Johns

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Cards in this guide (16)
What is the purpose of the scientific method

The purpose of the scientific method is to remove as much human bias and opinions from science.

What is the difference between a strong base and a weak base

A "strong" acid (or base) is one that dissociates completely in dilute aqueous solution. One which does not is a "weak" acid (or base). An acid with a pKa (or a base with a pKb) lower than about -2 is considered to be a "strong" acid.

Weak acids and bases can still be quite corrosive. HF is a "weak" acid with a pKa of around 3.2 (which corresponds to only about one molecule out of every 38 or so being dissociated), but it's pretty terrible stuff and will dissolve even glass.

Which of the following is a strong acid

HCI (Hydrochloric acid)

What kind of fraction has a value less than 1

1/2 is less than one.

How are forensic scientists important to your society
What is the purpose of engineers

Engineers design new products that you buy. They design everything from bridges to planes to computers.

How does getting funding from the government affect scientific research

scientist have to follow govermental rules made to protect people

Which sentence suggests the least amount of psychic distance

Katia was going to teach them a lesson they'd never forget.

No way, she thought, this is ridiculous.

What is Ka for H2CO3 aq H aq HCO3 aq

Ka= [h+][HCO3-]/[H2CO3]

What kind of scientist would study the affects of acid rain on a marble statue

Geologist.

Possibly a chemist.

What question might a scientist ask about a cuttlefish

what do cuttlefish have in common

Which of following might a biologist choose to study

The causes of honeybee deaths in beehives

What describes an independent variableWhich of the following describes an independent variable

for Apex: the variable is an experiment that is manipulated by the scientist.

What best explains the type of characterization used in this passage

savage and war-hungry

Which one of the following is an example of a strong base

sodium hydroxide

which of the following is an example of an Arrhenius acid

HI

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