Gram Sealed
2010
2 questions on chemisrry please help?
1.Using the concept of intermolecular forces, Arrange the following in order of decreasing boiling point.H2S, CH3OH, NH3, SF6,
anddddddddddddddd
2)The compound CfCL3 has a vapor pressure of 856 mmHg at 27*c. if 11.5 grams of this substrance are sealed in a 900ML flask, how much liquid remains in equilibrium?
Given
H2S, CH3OH, NH3, SF6
Increasing boiling point: ---->
SF6 --> H2S --> NH3 --> CH3OH
SF6 is symmetrical and therefore nonpolar. London dispersion forces are the only intermolecular force.
H2S is polar and exhibits dipole-dipole interaction, but no hydrogen bonding.
NH3 is polar plus it exhibits hydrogen bonding
CH3OH is polar plus it exhibits hydrogen bonding which is stronger than in NH3. Also the London dispersion forces are somewhat greater for methanol than for ammonia. All of this makes methanol a liquid at room temp, while the others are all gases.
 |
 Sheer Cover Mineral Foundation Buff 4 grams 90 days size sealed  US $20.95
|
 Sheer Cover Latte Mineral Foundation 4 grams 90 days size sealed container US $20.95
|
 BareMINERALS Honey BISQUE multi tasking 2 GRAMS sealed US $17.99
|
 |
Yogurt Culture 2-Packs (Sealed Together) of 5-Gram Each List Price: $2.95 Sale Price: $2.95  |
|
The Donvier Collection of ice cream and yogurt makers will add an element of fun and nutrition to your cooking. Now you can create yogurts and ice creams while using nothing but the best and freshest ingredients... |
 |
Sheer Cover Mineral Foundation BUFF 4 Grams NEW & SEALED Sale Price: $10.99 |
|
NEW & SEALED |
 |
SHEER COVER MINERAL FOUNDATION MOCHA 4 GRAMS NEW SEALED! Sale Price: $39.95 |
|
Sheer Cover Mineral Foundation 4GRAMS |
 |
Sheer Cover Mineral Foundation GOLDEN 4 Grams NEW & SEALED Sale Price: $34.95 |
|
Now infused with innovative skin-nurturing ingredients, this flaw-fixing Mineral Foundation SPF 15 treats and protects while it perfects. A powerful anti-oxidant found in Green Rooibos Tea is the exciting new ingredient story here - it's formulated to defend skin against oxidative stress and future damage... |
 |
Dry-Packs Moisture Absorbing Silica Gel Indicating Packets (20 packs) List Price: $11.95 Sale Price: $6.00 |
|
Dry-Packs Moisture Absorbing Indicating Silica Gel Packets item number DP1-20R includes 20 of the Indicating Silica Gel Packets that have indicating crystals inside the clear packet so when the indicating beads turn from orange to dark green you know that the packets are about 60% absorbed and must consider replacing... |
 |
New 1 Gram Gold Bar-Solid Gold Bullion List Price: $89.95 Sale Price: $76.95 |
|
Beautiful bar of 24 karat Pure Gold(Solid Gold) bullion from Istanbul Gold Refinery which weights 1 gram and has the purity of 999.9 /1000. The gold is minted on a credit card-sized plastic. The front side has the item serial # and the certificate of authenticity is at the back of the card... |
 |
NEW 1 GRAM PAMP SUISSE GOLD BAR SEALED Sale Price: $84.99 |
|
NEW SEALED 1 GRAM PAMP SUISSE "Statue of Liberty" Gold bar ingot. Pamp Suisse is a trusted and recognized name in the precious metals industry all over the world These bars have unique individual serial numbers and are all pure 999... |
|
Sheer Cover Mineral Foundation MOCHA 4 Grams NEW & SEALED dark Sale Price: $36.95 |
|
Now infused with innovative skin-nurturing ingredients, this flaw-fixing Mineral Foundation SPF 15 treats and protects while it perfects. A powerful anti-oxidant found in Green Rooibos Tea is the exciting new ingredient story here - it's formulated to defend skin against oxidative stress and future damage... |
|
Sheer Cover Mineral Foundation ALMOND 4 Grams NEW & SEALED Sale Price: $28.98 |
|
Now infused with innovative skin-nurturing ingredients, this flaw-fixing Mineral Foundation SPF 15 treats and protects while it perfects. A powerful anti-oxidant found in Green Rooibos Tea is the exciting new ingredient story here - it's formulated to defend skin against oxidative stress and future damage... |
 |
Brother TN360 TN330 TN-360 TN-330 Toner Refill Kit - For Use In: Brother DCP7030, DCP7040, HL2140, HL2150, HL2170, MFC7440, MFC7840 Sale Price: $3.49 |
|
1 NEW sealed High Yield(90 gram) highest Quality refill Toner for Brother TN-360 TN-330 cartridge Brother HL-2140 HL-2170W MFC-7340, MFC-7345n, MFC-7440n, MFC-7840W DCP-7030, DCP-7040 90 gram absolute black toner refill(up to 3500 pages) 1 - pouring spout w/cap and glove 1 - set easy-to-do instructions This toner is warranted to be free from defect, 100% compatible The cartridge is very easy to refill for everyone... |
Comment