Science & Mathematics - 2 December 2006

For statements a) through d) use the reaction:


SiCl4(l) + 2Mg(s) --> 2MgCl2(s) + Si(s)



a) Mg is the reducing agent

b) SiCl4 is the reducing agent

c) Mg is reduced

d) SiCl4 (or Si in SiCl4) is reduced

e) Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g) is a redox reaction

f) O3(g)(aq) + NO(g) --> O2(g) + NO2(g) is a redox reaction

2006-12-02 21:13:14 · 3 answers · asked by purple222 2 in Chemistry

2006-12-02 21:09:52 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2006-12-02 21:03:06 · 6 answers · asked by C.R. Finn 1 in Zoology

2006-12-02 21:03:03 · 6 answers · asked by Anthony R 4 in Astronomy & Space

2006-12-02 21:00:50 · 8 answers · asked by kafka 1 in Physics

2006-12-02 20:58:32 · 4 answers · asked by kadhir p 1 in Physics

2006-12-02 20:55:04 · 31 answers · asked by febin_ignatious2005 2 in Astronomy & Space

2006-12-02 20:54:33 · 2 answers · asked by meher k 1 in Biology

2006-12-02 20:54:26 · 1 answers · asked by Anonymous in Mathematics

name some sites or references that help me.

2006-12-02 20:46:59 · 1 answers · asked by noga_4ever _ 1 in Chemistry

brazil belong to what group of coutry??? like philippines... philippines belong to a group of ASEAN, UN and many more nut i need all group... how about canada, china, japan, united states, egypt, singapore and cambodia??? to what group are they belong??? all groups that they belong..

2006-12-02 20:45:38 · 9 answers · asked by Anonymous in Geography

tnx

2006-12-02 20:38:52 · 2 answers · asked by xei2 1 in Botany

anything to compare it with?

example: 45 kg is roughly as heavy as an anvil

i need it for my research. thank you

2006-12-02 20:37:57 · 17 answers · asked by kaz 3 in Physics

4.Imagine you are on a ship traveling the ocean by the most direct route.
oWhat are the most distant points between which you could sail?
oDiscuss the path you would take and/or other things you learn from working on this.
oHow far apart are these points in flying distance?

2006-12-02 20:32:47 · 1 answers · asked by myyahoo! 2 in Earth Sciences & Geology

Imagine you are going to fly over the continents by the most direct route. What are the most distant points between which you could fly? Discuss the path you would take.

2006-12-02 20:31:26 · 2 answers · asked by myyahoo! 2 in Earth Sciences & Geology

2006-12-02 20:30:52 · 6 answers · asked by deangelariver14 1 in Astronomy & Space

In a certain department, 15% of the females and 25% of the males are working on a project. 60% of the department is female. What percent of the department is working on the project?

A.12
B.19
C.40
D.48
E.One cannot tell from the information given

answer: B

2006-12-02 20:27:01 · 5 answers · asked by rowie 1 in Mathematics

I am doing a project where I have to replace a small city's existing well system with a central plumbing system. I need to know the disadvantages to having a pump as opposed to city plumbing. ANY kind of answer would be greatly appreciated. Thank you.

2006-12-02 20:25:15 · 3 answers · asked by jonbauer99 1 in Engineering

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2006-12-02 20:18:56 · 13 answers · asked by atul_inus 1 in Zoology

2006-12-02 20:18:07 · 3 answers · asked by stamana37043 1 in Weather

A cleaning solutuion is made up of three chemicals: A, B, and C...there are equal amounts of A and B and four times as much C as there is A, what percentage of the bottle is filled with C?

2006-12-02 20:17:05 · 7 answers · asked by Antonio 2 in Mathematics

b. Use identities to rewrite the equation in the terms of a single angle.

cos2X + 3sinX = 2

2006-12-02 20:16:51 · 5 answers · asked by keenan93312 1 in Mathematics

A picture on a page was reduced on a copier to 60% of its original size, and this copy was then reduced by 20%. What percent of the size of the original picture was the final copy?

A.12
B.20
C.40
D.48
E.52

answer: (( D ))

2006-12-02 20:11:30 · 6 answers · asked by rowie 1 in Mathematics

2006-12-02 20:09:51 · 10 answers · asked by deangelariver14 1 in Astronomy & Space

34)
convert the following values into mm Hg:
a. standard pressure
b. 25.3 psi
c.7.5 atm
d. 28.0 in. Hg
e. 41.8 Pa

2006-12-02 20:08:59 · 2 answers · asked by femylatina 1 in Chemistry

2006-12-02 20:07:36 · 1 answers · asked by cindy l 1 in Chemistry

i wounder if there is a limit for flow speed in a vertical pipe when the condition is not under pressure.

2006-12-02 20:05:39 · 1 answers · asked by mehdi m 1 in Physics

2006-12-02 19:59:16 · 9 answers · asked by snsdpt 1 in Astronomy & Space

Location
Type of cells produced
Number of chromosomes in parent cell Number of chromosomes in daughter cell Haploid/diploid
Number of parent cells
Number of daughter cells produced
Comparison

2006-12-02 19:57:25 · 3 answers · asked by Anonymous in Biology