I recently got a trail pair for these contacts from my eye doctor. I threw away the packaging and now want to order more. I remember the power -3.75 but not the BC. It was either 8.30 or 8.70. If I were to get a trial size would it matter what BC number?2 AnswersOptical1 decade ago
in this laboratory activity you will produce 2.00g of calcium carbonate from aqueous solutions of calcium chloride and sodium carbonate.
Before the lab begins I have to convert my known grams to grams of my both unknowns. I
CaCl2 + Na2CO3 -----> CaCO3
is that right? I am not sure because what happened to the Cl at the end of the equation? Please Help. I also thought of it as a double replacement reaction
please help, much appreciated!2 AnswersChemistry1 decade ago
My 2Wire 802.11G USB wireless adapter is not compatible with Vista (so it says when I scan the upragde advice thingy from microsoft) Can I still upgrade and use it or will it just not work? Can I just plug in an ethernet and or a dsl cable to the computer and have it work taht way? I really don't want to have to buy something else besides the OS itself just to be able to use it.
Help????1 AnswerComputer Networking1 decade ago
ok so I ran Norton anti-virus and it found something called Bloodhound.1 and it said it got rid of it after the reboot. But it keeps coming back! There are internet radio ads playing at random times when I am on the internet, I am not able to instal iTunes 8, I am not able to use Automatic updates, anytime I shut the computer off some user called I-User Admin comes up out of no where on the login screen and you need a password to log in. But if I go onto mine I can delete it. So I deleted it. but whenever I shut the computer off and go back on it shows up again. I really need help! whatever anyone can give me is appreciated I have never had this much trouble with a virus before. I have been going at it for like 2 weeks already. Plus the added "bonus" of my computer taking FOREVER to load the shut down options when you click shut off or the whole start up shut down processjust takes forever. help, please!5 AnswersSecurity1 decade ago
Every time I try to install the new version of iTunes, I get this:
I downloaded it from the apple site itself. Help?!?!?1 AnswerSoftware1 decade ago
Ok, so I start the computer and log in. But after I log in nothing will load. The Task Bar, no desktop icons, nothing at all. I was only able to get on the computer after opening the Task Manager with Ctrl Alt Delete and clicking on New Task.
Can anyone help me?!?!? I tried tapping F8 when the computer started and booting up the computer with the last good known settings checked off, but still won't load anything.
Help?9 AnswersOther - Computers1 decade ago
My system was slow and just really bad so I restored it. I am trying to get my files back but I totally forgot that I made all my files private and so now it won't let me get into My Documents from the previous windows. Help?!?5 AnswersOther - Computers1 decade ago
1. x/3 - 6/x = 1
What would my common denominator with one fraction being a number and the other a variable?!?!
how would I multiply these three? I have done it with two. Would I just multiply the first two and than multiply that by the last one?
If so would I get x^2-2x-30? I think that it is wrong, but not sure.