Daily EQ:What is a solution? Warm-up 11/29/10 Half-life- the time required for half of a substance to decay How many grams of a 50 g sample of Thorium.

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Daily EQ:What is a solution? Warm-up 11/29/10 Half-life- the time required for half of a substance to decay How many grams of a 50 g sample of Thorium – 234 would remain after 20 days? (Half-life is 5 days) Bean Lab Due Wednesday 12/1

11/29/10 Things to do today 1. Review purpose of Bean Lab. Any questions about graphs? Need graph paper? (due Wednesday) 3. Return quiz, any questions on quiz

Notes Define the following solution- solution- solvent- solvent- solute- solute- solubility- solubility- solubility curve- solubility curve-

Solubility curve 11/29/10

Unit EQ:What is solubility? Daily EQ:What is a solubility curve? Warm-up 12/3/10 1)What are the solutes in a can of soda? What is the solvent?

More notes Define the following saturated- saturated- supersaturated- supersaturated- unsaturated- unsaturated- hold the maximum amount of solute per solvent. On the curve hold more than maximum amount of solute per solvent- above the curve less than the max –under the curve

1) How much potassium nitrate can dissolve in 100 grams of water at 40 o C ? b)How much sodium chloride can dissolve in 18 grams of water at 55 o C ? 3) Which has the lowest solubility at 0 o C. NH 3 KCl, NaNO 3 NH 3 KCl, NaNO 3 d) Which can make a more concentrated solution at 15 o C? NH 4 Cl or NaCl 5) If 30 grams of sodium nitrate dissolve in 50 grams of water at 30 o C, is the solution saturate, supersaturate or unsaturated?. f) How many grams of a 18 g sample of Thorium – 234 would remain after 45 days? (Half-life is 5 days) Ticket out the Door

Unit EQ:What is solubility? Daily EQ:What is a solubility curve? Warm-up 10/28/09

Unit EQ:What is solubility? Daily EQ:What is a solubility curve? Warm-up 10/28/09 1) How much potassium nitrate can dissolve in 100 grams of water at 40 o C ? 2) How much sodium chloride can dissolve in 18 grams of water at 38 o C ?