Which is a defining trait of a mineral?

Answers

Answer 1

Answer: traits which are used to identify and describe mineral species.

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What is the comound name for the formula PbCl2?

Answers

Lead (II) chloride
......................................
Chlorine has a charge of -1 and lead can have a charge of +2 or +4
The charges need to be balanced, so if lead was +4 then the equation would be PbCl4, because chlorine needs 4 atoms to balance out lead. Because it was Cl2, we know it was lead (II)

Is the following hypothesis testable? "If I study, I will get a better grade on a test than if I do not study."

Answers

Answer:

Yes

Explanation:

Yes, you can test this by comparing grades you received when you studied and when you did not study

What are two cells and how can we tell them apart

Answers

Animal cell- circle, has a larger vacuole
Plant cell- Cell wall, Chloraplast, Rectangle,

1. What is the maximum amount of NaCl that can dissolve in200 g of water? (The solubility of NaCl is 35 g/100 g H20 at
20°C.) *

Answers

Answer:

70g

Explanation:

Rate = 35g of NaCl can dissolve in 100g of H2O

Use proportions for 200g of H2O:

$(35)/(100) = (x)/(200)$

Since 200 is double of 100, x needs to be double of 35.

$(35)/(100) = (70)/(200)$

Therefore the maximum amount of NaCl that can dissolve in 200g of water is 70g.

What happened when citric acid and and bicarbonate soda mixed together

Answers

The reaction follows the normal rules for an acid-carbonate reaction, which in turn is a special kind of acid-base reaction.

Acid + Carbonate -> Salt + Water + CO2

(Citric Acid) + (bicarbonate soda) -> (Trisodium citrate) + water + CO2

This is a very fast reaction, which produces a lot of carbon dixoide in a very short amount of time, which is the bubbles that you see. The other chemicals produce are clear liquids, so you don't see any of them.

Trichinella spiralis the worm that causes trichinosis is a what kind of worm

Answers

It's a parasite. Hope I helped!

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