brina
Most popular questions and responses by brina
Chemistry
When a sample of potassium nitrate is heated, oxygen gas is produced. This gas, collected in a 750 milliliter flask, has a pressure of 2.8 atmosphere and the temperature is recorded to be 53.6°C. How many moles of oxygen gas are produced in this reaction?
asked on April 16, 2014 
chemistry
35.00mL of 0.250M KOH solution is required to completely neutralize 10.50mL of H2SO4 solution. what is the molarity of the sulfuric acid solution KOH(aq)+ H2SO4 > K2SO4(aq) +H2O(l
asked on March 15, 2012 
math213
Wally kept track of last week’s money transactions. His salary was $150 plus $54 in overtime and $260 in tips. His transportation expenses were $22, his food expenses were $60, his laundry costs were $15, his entertainment expenditures were $58, and his
asked on November 7, 2009 
MATH 213
13. Consider the set of northwestern states or provinces {Montana, Washington, Idaho, Oregon, Alaska, British Columbia, Alberta}. If a person chooses one element, show that in three yes or no questions, we can determine the element.
asked on November 1, 2009 
math
A survey of 9,286 cars on a company’s parking lot. 15% is chrysler, 5% is honda, 19% is toyota and 35% is chevrolet. how many fords are parked on the lot?
asked on December 6, 2009 
math (unit rate)
please explain how to write the unit rate as a fraction example: 25 feet per second
asked on September 16, 2008 
Physics
A 850 kg car skidding on an icy highway at 32.5 km/h slides onto some bare pavement. If the coefficient of friction between the tires and the bare pavement is 0.200, what time(s) does it take for the car to stop? HOW do i get the answer!!!!
asked on August 2, 2011 
algebra
your high school golf team shot rounds of 68, 70, 72, 78, and 84. if par for the course was 71, how many shots was the team over par?
asked on February 24, 2010 
math
every summer, each student organization at your school sends 2 students to summer camp. the teacher mentor randomly selects the students (pulls from a hat) the club has 10 students among the students is a set of twins. what is the probability the 2 slots
asked on January 16, 2010 
math 214
Answer each of the following: a. Draw a line l’ and any two points A and B so that AB is parallel to the line. Find the image of l under a translation from A to B. b. Draw a line l and any two points A and B so that AB is not parallel to l. Construct
asked on December 21, 2009 
MATH
Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. a. What did the bicycle sell for regularly? b. What is the amount of the new discount?
asked on November 16, 2009 
math213
11. A student reports that it is impossible to mark a product up 150% because 100% of something is all there is. What is your response?
asked on November 3, 2009 
math213
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate
asked on October 27, 2009 
math213
Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate
asked on October 27, 2009 
health
should schools educate teenager about contraception methods or focus only on abstience? please help me, i think yes they should because there are many teenagers who prefer not to adopt abstience. so they should have proper knowledge about contraception.
asked on January 17, 2009 
algebra
solve for y: 1. 3x+2xy=10 2. 1/3x3/4y=6
asked on February 24, 2010 
art
What is known as chroma or intensity?
asked on November 24, 2009 
math
student claims that the square root of x equals three has no solution, since the square root of a negative number does not exist. Why is this argument wrong?
asked on November 11, 2009 
math213
A student reports that it is impossible to mark a product up 150% because 100% of something is all there is. What is your response?
asked on November 5, 2009 
math213
Let U = {u, n, i, t, e} FIND THE SUBSETS
asked on November 2, 2009 
math213
Say you have 12 books, but room to display only 7. I will open this to everyone  how many differnt arrangements are there if the order of the books matters (permutation) and how many if order is of no consequence (combination)?
asked on October 29, 2009

ART PLEASE HELP
The answer is: They painted humans much smaller than the surrounding objects of nature.
posted on December 6, 2016 
Physics
thats wtong tho, the answer is 4.60s i just don't know how to get that
posted on August 2, 2011 
english
no adj
posted on February 24, 2010 
Math
3a7=65 3a7+7=65+7 3a=72 3a/3=72/3 a= 24yr Steve 6524= 41yr Mother
posted on October 27, 2009 
health
thank you so much!!!
posted on January 17, 2009 
health
i am sorry but i still cannot get it. i am so confused. thanks for your help though!!!
posted on January 17, 2009 
math (unit rate)
please explain how to write the unit rate as a fraction example: 25 feet per second
posted on September 16, 2008