Saturday
November 29, 2014

Posts by Ambra


Total # Posts: 15

CHEM
how many milliliters of a stock solution of 6.0 m hno3 would you have to use to prepare 110mL of 0.500 M HNO3?
July 14, 2014

chemistry
What is the molarity of a solution prepared by dissolving 2.41 g of potassium iodide, KI in 100 mL of water?
May 6, 2012

chemistry
What is the pressure in a 1.5 L vessel containing 0.25 moles of )2 if the temperature is 37 degrees C? R the universal gas constatn is 0.082 L atm/mole K
May 6, 2012

cheistry
What is the fromulat for copper (II) sulfate?
May 6, 2012

statistics
a coin is tossed 16 times. What is the standard deviation?
May 3, 2012

Statistics
An insurance sales representative selects 4 policies to review. The group of policies she can select from contains 10 life policies, 5 automobile policies, and 3 homeowners policies. Find the probability of selecting all life policies. The number of ways to select all life ...
May 3, 2012

statistics
A committee consisting of 6 people is to be selected from eight parents and four teachers Find the probability of selecting three parents and three teachers?
May 2, 2012

Chemistry
What is the molarity of a solution prepared by dissolving 4.92 g of calicum nitrate in 250 mL of water?
May 1, 2012

Chemistry
What volume (in liters) is occupied by 0.01 moles of carbon monoxide, CO at 9 degrees C and 0.973 atm?
May 1, 2012

Chemistry
Ethane, C2H6, has a molar heat of vaporization of 15kJ/mole. How many kilojoules or energy are required to vaporize 5 g of ethane?
May 1, 2012

Chemistry
how many gram of Co2 are formed for every gram of CH4 that combusts
April 22, 2012

statistics
Give the boundaries of 47.4 miles
April 3, 2012

Chemistry
How many grams of Fe are in 6.6 g FeO. (Remember the percent Fe in FeO is the grams of Fe in 100 g of FeO)
March 29, 2012

Chemistry
Lithium hydroxide is used in the space program to remove carbon dioxide (frin respiration) in spacecraft. Specifically, lithium hydroxide, LiOH reacts with carbon dioxide, CO2 to form lithium carbonate Li2Co3, and water. 2 liOH + Co2 Li2Co3+ H2O. What mass of CO2 can be ...
March 28, 2012

chemistry
What is the molarity of a solution prepared by dissolving 4.92 g of calcium nitrate in 250 mL of water? 4.92 x 164 = 806.88 806.88 x 250 =201720 is this the answer???
March 25, 2012

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