Recent content by azncocoluver

So for #1 would I set it up like this: # moles of Ca(OH)2 = 0.100 ml * {0.100 moles of OH(!)/l} * (1 mole of Ca(OH)2 / 2moles of OH)

Why is it 0.2M for #1? And can you show me how to set up for #2 please? Thank you once again!

Homework Statement Calculate how many grams of solute are necessary to prepare: 1) 100 mL of 0.1 N (Normal Solution) Ca(OH)2 (molecular weight = 74) 2) 100 mL 5% NaCl (molecular weight = 40) Homework Equations Molarity = # of moles / # of liters The Attempt at a Solution 1. I...

No clue lol.. can you show me the solution because I've never done a problem like this before. I kind of learn better when I see an approach first :]

Ft = Fg?

Haha wow, I totally forgot to put the question. (a) Find the speed of the stone. m/s (b) Find the tension in the string. N I have no idea where to start. :[

Homework Statement A 0.55 kg stone attached to a string is whirled in a horizontal circle of radius 19 cm as in the figure below. The string makes an angle of 35° with the vertical. Homework Equations The Attempt at a Solution

Oh yeah! I totally forgot about that. Thank you!

Homework Statement http://www4c.wolframalpha.com/Calculate/MSP/MSP18091a03ad70feibdhb300005da572897hebg236?MSPStoreType=image/gif&s=52&w=143&h=42 Homework Equations lim x->2+ (x^2 - 3x + 2) / (x^3 - 4x) The Attempt at a Solution I plugged in 2 for x and it was 0/0 so then I...

Oh okay I think I finally understand. 3x-9 / 3x-9 is 1 and since there is a negative outside the parantheses, the limit is just -1 because you can't plug 3 into x since there is no x left.

We can't use L'Hopital's rule yet because my teacher hasn't taught it. Um, the numerator goes to infinity and so does the denominator. So infinity/infinity?

Can you show me the steps to complete this problem because I have no idea where to start.

Okay so the fraction is now 3x -9 / 9-3x? How do I get the answer of -1 though? Also, is the limit of y/abs(y) is always going to be -1?

It would be -|3x-9| = -3x-9.. right?

Homework Statement http://www4c.wolframalpha.com/Calculate/MSP/MSP621a026b7befdf1f1d00003b707661e1i20i4e?MSPStoreType=image/gif&s=55&w=126&h=38 Homework Equations limit x->3- (3x-9)/((abs(3x-9))The Attempt at a Solution I don't understand how to find the limit of absolute values..