Saturday
October 25, 2014

Posts by Mal


Total # Posts: 16

Chemistry
A 6.8 g sample of metal pellets is placed into a graduated cylinder holding 7.1 ml of water. After the pellets are added, the water level stands at 9.30 ml. Determine the density of the pellets. (show all work) I've tried 6.8 g / 9.30 ml and .97-.71 to get .24 but I'm ...
September 4, 2014

Chemistry
Al_S=Al2S3 10 grams of Al were mixed with 15 gram of S Find: limiting reagent al or s? How much Al2S3 were formed in reaction? What is the excess reagent?Al or S? How much excuss reagent left over after reactin? Thanks! <3
November 20, 2012

PHYSICS URGENT
Two forces are exerted on an object. A 32 N force acts at 220° and a 53 N force acts at 315°. What are the magnitude and direction of the equilibrant? ___N ___°
October 26, 2012

geometry
Find the values of a and b. In a quadrilateral a=113 degrees and b=base =36 degrees
May 29, 2012

Chemistry
with regard to the reaction of sodium with chlorine (2 Na + Cl2 = 2 NaCl); if 1.0 mole of Cl2 is heated in the presence of 6.0 moles of sodium metal, how many moles of NaCl will be formed?
May 5, 2011

Chemistry
A penny has a mass of 2.5 g and the moon has a mass of 7.35*10^22kg. What is the mass of 1 mole of pennies? How many moles of pennies have a mass equal to the mass of the moon?
March 23, 2011

Chemistry
A penny has a mass of 2.5 g and the moon has a mass of 7.35*10^22kg. What is the mass of 1 mole of pennies? How many moles of pennies have a mass equal to the mass of the moon?
March 23, 2011

chemistry
calculate the volume in milliliters of 3.6 mol/L sodium nitrate solution that contains 325 mmol of sodium nitrate
March 8, 2011

chemistry
ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O). What mass of water is produced by the reaction of 1.09g of oxygen gas?
March 8, 2011

chemistry
In a reaction involving the bromination of acetone, the following initial concentraions were present in the reaction mixture. acetone (0.8mol/L), H+ (0.2 mol/L), Br2 (0.004 mol/L) At 25 degrees C, it took 240s before the colour of Br2 disappeared. If the reaction is zero order...
February 27, 2011

math
if a enegry bar contains 153 cllories and the protein makes up 11% what is the number of calories from the portein bar
September 15, 2010

PHYSICS
How would I o about solving this: When a load of 1000000 Newtons is placed on a battleship, the ship sinks only 2.5 cm in the water. Estimate the cross-sectional area of te ship at water level.
February 21, 2010

Physics
prairie dogs live in underground burrows with at least 2 entrances. they ventilate their burrows by building a mound around one entrace, which is open to a stream of air. a second entrace at ground level is open to almost stagnant air. use bernoullis principle to explain how ...
February 21, 2010

PHYSICS
why would you use the guage pressure in this case and not the absolute pressure?? im confused
February 21, 2010

chemistry
Write two conversion factors based on the relationship between hours and minutes...
September 22, 2008

chemistry
Write two conversion factors bsd on the relationship between hours and minutes...
September 22, 2008

Pages: 1

Search
Members