3 years ago

Difference betwifference between a mixture or compound

1 answer:

7 0

The difference between a mixture and a compound is that a mixture can be easily separated like a salad where you can pick things out and a compounds you are usually not able to undo

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PLEASE HELP!!!!! Calcium hydroxide is _____. an acid a base a neutral

Bingel [31]

I believe it is a base!

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3 years ago

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What is atomic mass made of?

olasank [31]

Answer:

Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

Explanation:

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3 years ago

In terms of drug development, rank the following microbes from most difficult (1) to least difficult (3):

iVinArrow [24]

Answer:

See below ↓↓↓

Explanation:

Helminths = 1 Most Difficult

Fungi = 2 Moderately Difficult [Option not given, but 2 is right answer]

Bacteria = 3 Least Difficult

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2 years ago

The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to

kicyunya [14]

To find out the answer, we must know the mass percentage of Cu in the mineral chalcopyrite.

Mass percentage of Cu = molar mass of Cu/molar mass of chalcopyrite = 64/(64+56+32*2) = 34.8%.

So to obtain 210 g pure Cu, the amount of mineral need = mass of Cu/mass percentage of Cu = 210 g/34.8% = 603 g = 0.603 kg.

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3 years ago

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Which of the following is an example of a chemical change? A. Boiling water B. Burning paper C. Dissolving sugar in water D. Mel

SpyIntel [72]

It’s B.burning paper

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4 years ago

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