Tutorials Posted by hzwill
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hzwill's Posted Tutorials
| Bounty | Category | Question | Tutorial | Purchases | Date Posted |
|---|---|---|---|---|---|
| $1.00 | Mathematics | geometry | a easy way to solve this kind of problem
...rgest one is a acute angle, thus the triangle is acute triangle.And so on. For example:the three angles in the triangle:50,40... | Dec 04, 2008 at 10:31:44PM | |
| $2.00 | Biology | are ionic bonds more common than covalen | It depends on the situation
... it's more in the primary structure of the polymer,such as peptide bond. And the ionic bond,Th... | Dec 04, 2008 at 10:14:20PM | |
| $1.00 | Mathematics | Help me solve this problem 40/x-2=1+42/x | Do you mean:40/(x-2)=1+(42/x)?
...numden:(x-2)x time com... | Dec. 04, 2008 at 10:08:42AM | |
| $0.80 | Biology | how do people use air? | answer
...on of organic matter,such as carbohydrate,li... | Dec. 04, 2008 at 08:11:19AM | |
| $1.00 | Chemistry | a student wanted to make sodium sulphate | It's really dangerous
...sulphuric acid. The reaction of sodium with water is dangerous reaction(2Na+2H2O=2NaOH+H2).the reaction is very... | Dec. 04, 2008 at 01:06:22AM | |
| $1.00 | Mathematics | One flowerbed used 4&1/4 bags of woodchi | process
...7 * X" .Use the number of woodchips used in fir... | Dec. 04, 2008 at 12:23:26AM | |
| $1.00 | Mathematics | 8th grade math.....HELP! | Process
... unknown on the left side of the equation,and t... | Dec 03, 2008 at 9:54:18PM | |
| $1.00 | Chemistry | Help please | Details of the process
...aF2+3Ca3(PO4)2 (in fact they all Ion type) Step 2. CaF2 and Ca3(PO4)2 react with sulfuric aci... | Dec 03, 2008 at 9:26:14PM | |
| $1.00 | Mathematics | 4 women and 3 men sign up to work weeken | process
...f 7. the combination formula:C=N!/[M!*(N-M)!] N=all elements,M=choosed elements Sorry for my bad eng... | Dec. 03, 2008 at 10:16:43AM | |
| $1.00 | Mathematics | age problem | No final answer but process help you
...,and the six years ago is (X-6) so we can list t... | Dec. 03, 2008 at 09:49:39AM | |
| $2.00 | Physics | Help with a physics problem asap please!! | No final answer but process help you
...nly find out the real force on the direction of the displacement. we know the total force is 20N,the ... | Dec. 03, 2008 at 09:38:09AM | |
| $1.00 | Biology | Why is there a limit on cell size? | Three points
...rface area To spherical cells, for example(not all cells are spherical cells),calculation the relationship between Volume and surface area.The results show that when spherical cells increased the...... | Dec. 03, 2008 at 08:02:35AM | |
| $1.00 | Chemistry | For the reaction. What is the approxim | work process
...he formula:w=pV 3.and acc to form:pV=nRT so p`... | Dec. 03, 2008 at 05:54:56AM |