Physics Properties Of Matter Level: Misc Level
A block of ice at 0% is added to a 150 g aluminum calorimeter cup that holds 200 g of water at 10% C If all but 2.00 g of ice melt, what was the original mass of the block of ice?
Physics Properties Of Matter Level: Misc Level
If the density of gold is 19.3 x103 kg/m3 what buoyant force does a 0.60 kg gold crown experience when it is immersed in water?
Physics Force & Laws Of Motion Level: Misc Level
A plastic block of dimensions 2.00 cm x 3.00 cm x 4.00 cm It has a density of 1.25 g/cm3? What is the maximum pressure it can exert on a horizontal surface?
Physics Properties Of Matter Level: Misc Level
Water is pumped through a pipe of diameter 15.0 cm from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564 m elevation and the village is at 2096 m. (a)At what minimum pressure must the water be pumped to arrive at the village? (b) If 4500 m^3 are pumped per day, what is the speed of the water in the pipe? (c) What additional pressure is necessary to deliver the flow? (note You may assume that the freefall acceleration and the density of the air are constant over the given range of elevations.)
Physics Properties Of Matter Level: Misc Level
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.10 atm, determine the pressure inside a bubble 4.0 m below the surface of the liquid.
Chemistry Inorganic Chemistry Level: Misc Level
Give the pH of a solution that is 1000 times more basic than a solution with a pH of 9.
Chemistry Inorganic Chemistry Level: Misc Level
Give the pH of a solution that is 100 times less acidic than a solution with a pH of 3.
Chemistry Inorganic Chemistry Level: Misc Level
Identify the acid, base, conjugate acid, and conjugate base in the following H2S +NH3 <-------> NH4 +HS-
Chemistry Inorganic Chemistry Level: Misc Level
Write the chemical reaction that describes the reaction of the weak acid HNO2 with water. Identify the acid, base, conjugate acid, and conjugate base in your reaction.
Chemistry Inorganic Chemistry Level: Misc Level
Give the pH, (OH- ) and indicate acid, base, or neutral for a solution that has (H3O+) of 1x10-11. ( 10 with a little minus sign and little 11 to the upper right of the 10. )
Chemistry Organic Chemistry Level: Misc Level
Show the complete reaction between acetic anhydride and dimethylamine
Chemistry Organic Chemistry Level: Misc Level
How many grams of methylamine are required to react with 25 g acetic acid?(10 pts.)
Chemistry Organic Chemistry Level: Misc Level
Which way will the equilibrium shift in the reaction going from a hemiacetal to an acetal if: (10 pts.)
a. Water is added.
b. Water is removed.
c. Alcohol is in excess.
d. A catalyst is added.
Chemistry Organic Chemistry Level: Misc Level
Show the complete reaction for the saponification of methyl -propanoate. (10 pts.)
Chemistry Organic Chemistry Level: Misc Level
What are the reaction conditions to go from 3- pentenal to 1- pentanol? Show the complete reaction. (10 pts.)
