Whatís the Word?
Weight For It
10/23
Concentrated Solutions
Toxicity
100

What is a solute?

A solute is a substance that can be dissolved in a solvent to form a solution. 

100

What is the mass of 1 mole of H2O?

H2O = (1 x 2) + (16 x 1) = 18 g

100

Who is Avogadro?

This man discovered the number of molecules in 1 mole is 6.02 x 1023.

100

What is 1 Molarity?

Having 1 mole solute/1 liter of solvent.

100

Is water toxic?

Water is generally not toxic to humans when consumed in normal amounts. In fact, water is essential for life, and adequate hydration is crucial for maintaining good health.

200

What is a solvent?

This substance is present in the greatest quantity in a solution. It is usually water, but almost always a liquid.

200

What is the mass of 1 mole of C6H12O6?

C6H12O6 = (12 x 6) + (1 x 12) + (16 x 6) = 180 g

200

What is 6.02 x 1023?

1 mole of H2O is equal to this many molecules.

200

What is 0.1 Molarity?

 A 0.1 M (molar) solution means that there is 0.1 moles of solute in 1 liter of solution.

200

What is lethal dose (LD50)?

This is the amount of an ingested substance that kills 50% of a test sample.

300

What is soluble?

"Soluble" refers to the ability of a substance to dissolve in another substance, usually in a liquid, most commonly water.

300

Which is heavier: 1 mole of NaCl or 1 mole of KCl?

NaCl = 23 + 35 = 58 g 

KCl = 39 + 35 = 74 g

300

What is 3.01 x 1023?

0.5 mole of H2O is equal to this many molecules.

300

If a person weighs 125 pounds, this is that personís weight in kg. *1 kg = 2.2 lbs

125/2.2 = 56.8 kg

400

What is molar mass?

Molar mass is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance in moles. It is expressed in units of grams per mole (g/mol)

400

How many grams would 2 moles of LiCl weight?

LiCl = (7 + 35) x 2 = 84 g

400

How many molecules are in 32 g of O2?

6.02 x 1023.

400

What is more toxic: 1 mole of mercury or 100g of mercury?

What is 1 mole? 1 mole = 200 g **Comparing LD50 of different chemicals, the lowest is the most toxic. If itís the same chemical, the more you have, the more toxic it is.

500

What is Molarity?

This chemical unit is the amount of moles of solute per liter of solvent.

500

Would 1 mole of CaCl2 or 2 moles of HF weight more?

CaCl2 = 40 + (35 x 2) = 110 g 

HF = (1 + 19) x 2 = 40 g

500

If there are 1.204 x 1024 molecules of NO, how much does NO weight?

60gr.

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