Friday
December 6, 2013

# Posts by Melanie

Total # Posts: 195

Chemistry
What happens if a student adds distilled water to a flask before starting the titration?

Chemistry
What happens when NaOH has been sitting for a couple of days without cover before starting the titration?

Math
Yeah that's what I thought. But I wasn't sure which was greater, the larger exponent or the smaller one. It's kinda confusing when your dealing with decimals and negative exponents. But thankss :)

Math
Which expression represents the larger number? A. 40.1 x 10 to the -6 power B. 4.1 x 10 to the -7 power C. 0.411 x 10 to the -6 power D. 0.04001 x 10 to the -5 power I got A, but I'm not quite sure if it's the right answer :/

physics
a 650 newton crate rests on the floor. how much work is required to move it at a constant speed, 3 meters against a friction force of 150 Newtons

Word Problems
The manager has one type of coffee that sells for \$5 per pound and another type that sells for \$11 per pound. The manager wishes to mix 90 pounds of the \$11 coffee to get a mixture that will sell for \$10 per pound. How many pounds of \$5 coffee should be used?

Chemistry
If you react 55g of hydrazine and 55g of oxygen gas, what is the maximum moles of nitrogen dioxide gas that can be made and what is the limiting reagent?