Number of results: 106
when you ride a bicycle at full speed and the bike stops suddenly, why do you have to push hard on the handle bars to keep from flying forward?
Sunday, October 7, 2007 at 12:21am by kelsie
for my marie curie report I need 5 things that will fit into a bag from my home that will help me tell my class about her. What do I bring?
Tuesday, November 20, 2007 at 9:03pm by Kelsie
Spelin!!! plse chek my spellin!
How do you spell, 'dog'?
Friday, March 28, 2008 at 1:00pm by Kelsie Emily
A MOSQUITO CAN FLY AT 0.6 MI/HR. HOW MANY INCHES PER SECOND IS THIS?
Wednesday, October 1, 2008 at 10:25pm by KELSIE
AN ARCTIC TERN FLEW 11,000 MILES IN 115 DAYS. HOW MANY FEET PER MINUTE DID THE BIRD AVERAGE?
Wednesday, October 1, 2008 at 10:27pm by KELSIE
A SNEEZE CAN TRAVEL UP TP 100 MI/HR. HOW MANY FEET PER SECOND IS THIS?
Wednesday, October 1, 2008 at 10:28pm by KELSIE
An unknown volume of water at 18.2 degrees celsius is added to 24.4 mL of water at 35.0 degrees celsius. If the final temperature is 23.5 degrees celsius what was the unknown volume? (assume no heat is lost to surroundings and D of water is 1.00g/mL)
Sunday, October 12, 2008 at 6:16pm by Kelsie
x= unknown mass of H2O x(4.184)(23.5-35) + 17.008(4.184)(23.5-18.2)=0 -48.116x + 377.156= 0 x = 7.84g d=1.00g/mL x=unknown volume 1.00= 7.84/x x=7.84mL
Sunday, October 12, 2008 at 6:16pm by Kelsie
high purtity benzoic acid (C6H5COOH; ^Hrxn for combustion is -3227kJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221g sample burns in a calorimeter(heat capacity=1365J/C) that contains exactly 1.270kg of H2O. What temperature change was observed?
Sunday, October 12, 2008 at 7:00pm by Kelsie
When a 28.8mL of .500M H2SO4 is added to 28.8mL of 1.00M KOH in a coffee-cup calorimeter at 23.50 degrees Celsius, teh temperature rises to 30.17 degrees Celsius. Calculate the ^H(change in enthalpy)of this reaction. (assume total volume is the sum of individual volumes and ...
Sunday, October 12, 2008 at 7:06pm by Kelsie
one reason carbon monoxide(CO) is toxic is that it binds to the blood protein hemoglobin more strongly than oxygen does. The bond between hemoglobin and CO absorbs radiation of 1953 cm^-1. (the units are the reciprocal of the wavelength in centimeters). Calculate the ...
Monday, October 13, 2008 at 7:45pm by kelsie
Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of soup containing 177 g of water is heated in a microwave oven from 20degrees Celsius to 98 degrees Celsius, with readiation of wavelength 1.55x10^-2m. How many photons are ...
Monday, October 13, 2008 at 7:48pm by kelsie
the complex ion[Ti(H2O)6]^3+ has a maximum absorption wavelength of 512 nm. Calculate the energy change in joules per ion.
Monday, October 13, 2008 at 7:50pm by kelsie
use the Rydberg equation to calculate the wavelength (in A) of the photon absorbed when a hydrogen atom undergoes a transition from n=1 to n=3.
Saturday, October 18, 2008 at 3:55pm by kelsie
Consider a light-sensitive reaction. What energy, in joules per photon, is needed to drive the reaction if delta H of the reaction is equal to 307kJ/mol?
Saturday, October 18, 2008 at 4:43pm by kelsie
I have a supermarket science project that is due in a couple of days. I have to compare quality and quantity of at least two similar products. I have to use these procedures for a formal lab report. TITLE~ PROBLEM STATEMENT~ HYPOTHESIS~ MATERIALS~ MV~ RV~ PROCEDURE~(must be ...
Monday, October 27, 2008 at 10:11am by KELSIE
8th gr. Algebra
I have 3 math problems for homework that are stumping me. Can anyone help guide me? Thanks! Here they are: 1. A full bucket of water weighs eight kilograms. If the water weighs five times as much as the empty bucket, how much does the water weigh? 2. Helen has twice as many ...
Tuesday, October 28, 2008 at 4:25pm by Kelsie
The answer is no the first card doesn't affect what card you could draw next. Just like the dime doesn't affect the quarter. They are two different variables.
Tuesday, October 28, 2008 at 4:03pm by Kelsie
I can only figure out number 1. First you want to make a table. B 1 2 3 4 5 6 7 this is the # ----------------------- G 5 6 7 8 9 10 11 and so on. Do you know how many kids there are?? Or at least how many girls there are. That might help you figure out the answer.
Tuesday, October 28, 2008 at 4:18pm by Kelsie
Well do you know the pythagorean theorum?? It say that the base squared + the height squared should equal the slope squared. So your going to do (15x15)+(10x10)= the slpoe. Hope that helps. Answer:the square root of 325.
Tuesday, October 28, 2008 at 3:22pm by Kelsie