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nexus9112 [7]
3 years ago
10

What is the criterion for clean glassware?

Chemistry
1 answer:
guajiro [1.7K]3 years ago
5 0
<span>That the glassware contains no residual chemicals that will alter the results of an experiment.</span>
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Activity 7: Crossword Puzzle
Natasha_Volkova [10]

Answer: 2. with two symmetrical shells - mirror images of each other.

the term "crinoid" means: 6. phylum where starfish and sea urchins belong

4. lived inside their shells: 1. exoskeletons are made up of this material

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Explanation:

Crinoid is a term that can be used to describe the radial symmetry of animals that have oral (side of mouth) and aboral surfaces (opposite to the mouth). It is characterized by the mouth at the top surface and surrounded by the arms for feeding it. This is a characteristic feature of animals like star fish and sea urchins and echinoderm animals.

The exoskeleton is a protective shell which protect the animal from the external environment like water, sunlight and predation.

The multicellular organisms that live in the colonies they form coral reef and individually the are called the coral polyp.

5 0
3 years ago
Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?
anygoal [31]
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Hope this helps!
6 0
3 years ago
How much heat is released when 105 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 4
vitfil [10]

Answer:

MgCal2=Cal2

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5 0
3 years ago
100 points!! Brainliest if correct!!
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gregori [183]
His classmates should be notified next
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