Science & Mathematics - 30 November 2006

2006-11-30 13:25:30 · 9 answers · asked by Pierre G 1 in Engineering

2006-11-30 13:23:59 · 7 answers · asked by Ronaldo V 1 in Geography

I need to build a machine of some sort that no one made yet for a project.

2006-11-30 13:23:26 · 5 answers · asked by Anonymous in Engineering

Write a Balanced equatiion for each of these:
44 A) Ag2 O (s) >>>
B) Nickel (II) Carbonate >>>>>Nickel (II) Oxide + ?
C) Ammonium Nitrate >>>>> Dinitrogen monoxide + Water
48) A) HCl (aq) + Ca (OH)2 (aq) >>>>
B) Ag2 SO4 (aq) + AlCl3 (aq) >>>>(silver chloride is a precipitate)
C) H2C2O4 (aq) + KOH (aq)>>>>
D) CdBr2 (aq) + Na2S (Aq)>>>(Cadium sulfide is a precipitate)
50 Write a Balanced equation for the complete combustion of each compound:
A) Butene (C4H8)
B) Octane (C8H18)
C) glycerol (C3H8O3)
D) Acetone (C3H6O)
52: Complete these:
A) Al (s) + H2SO4 (aq)>>>>
B) HCl (aq) + Ba (OH)2 (aq)>>>>
C) Au (s) + HCl (aq) >>>>>
54) EACH IS BALANCED BUT "INCORRECT", so correct these:
A) Cl2 + NaI >>> NaCl2 + I
B)NH3 >>> N + H3
C) Na+ O2 >>NaO2
D) 2Mg +H2SO4 >>Mg2SO4 + H2
E) MgCl + CaOH >>> MgOH + CaCl
F) H2 + Cl2 >> H2Cl2

Please answer just at least a few of these, because this counts as a nice grade in chemistry class! I'll give 5 stars 2 whoever answers most & best

2006-11-30 13:21:46 · 2 answers · asked by truckin_90 2 in Chemistry

Cash Per Person

1910 : $34.07
1920 : 53.18
1930 : 36.74
1940 : 59.40
1950 : 179.03
1960 : 177.47
1970 : 265.39
1980 : 570.51
1990 : 1,062.86
2000 : 2,075.63

By what multiple did the amount of currency per person grow from 1910 to 2000?

2006-11-30 13:21:44 · 3 answers · asked by vivixoxo 2 in Mathematics

2006-11-30 13:21:28 · 2 answers · asked by Pierre G 1 in Engineering

How do we do selection of transformer with a given specific load

2006-11-30 13:20:35 · 3 answers · asked by viswambaran s 1 in Engineering

CaO(s) into ions than to break up KF(s) into ions?
isnt Fluorine the most electronegative atom and thus woudlnt it be harder to break it from potassium?

2006-11-30 13:20:21 · 3 answers · asked by Anonymous in Chemistry

2006-11-30 13:20:10 · 12 answers · asked by quinyanna~da~1~n~only 2 in Astronomy & Space

2006-11-30 13:18:43 · 4 answers · asked by Anonymous in Mathematics

2006-11-30 13:18:27 · 6 answers · asked by Dave 1 in Mathematics

Did George Westinghouse Invent The VERY FIRST Circuit Breaker?Michael faraday?Thomas Davenport?or somebody Hilliard in 1925?or Someone else?(circuit breaker's are found/used in Electricity)

2006-11-30 13:17:25 · 8 answers · asked by ASHERS 1 in Engineering

What did you see?

2006-11-30 13:17:24 · 11 answers · asked by Mississippi River 3 in Physics

2006-11-30 13:16:39 · 6 answers · asked by Pierre G 1 in Engineering

rectangle is 21 square inches. What is the length of the rectangle?

2006-11-30 13:16:17 · 10 answers · asked by Anonymous in Mathematics

2006-11-30 13:15:23 · 5 answers · asked by Anonymous in Zoology

2006-11-30 13:14:48 · 6 answers · asked by Kat B 1 in Geography

2006-11-30 13:13:08 · 3 answers · asked by thesunshineking 2 in Weather

2006-11-30 13:12:23 · 5 answers · asked by thesunshineking 2 in Weather

2006-11-30 13:12:22 · 1 answers · asked by cambridgebrian 1 in Earth Sciences & Geology

2006-11-30 13:11:45 · 4 answers · asked by Mrs. J 3 in Mathematics

2006-11-30 13:11:33 · 16 answers · asked by thesunshineking 2 in Weather

2006-11-30 13:11:10 · 4 answers · asked by thesunshineking 2 in Weather

Can someone tell me formulae used in mensuration?

and some websites that explain mensuration with problems and answers.

2006-11-30 13:10:01 · 2 answers · asked by free aung san su kyi forthwith 2 in Mathematics

2006-11-30 13:09:55 · 9 answers · asked by thesunshineking 2 in Weather

2006-11-30 13:09:48 · 3 answers · asked by Nathan 3 in Earth Sciences & Geology

Why do you call it an asteroid when its outside the hemisphere, yet call it hemorrhoid when its in your ***?

2006-11-30 13:09:13 · 5 answers · asked by Anonymous in Astronomy & Space

2006-11-30 13:07:59 · 9 answers · asked by Britt 1 in Biology

I am curious because in science we learned about lake effect snow but not rain! How does it work?

2006-11-30 13:07:10 · 4 answers · asked by Rosemary Anna Bell Smith The 3rd 2 in Weather

1910 : 3,148,700,000
1920 : 5,698,214,612
1930 : 4,521,987,962
1940 : 7,847,501,324
1950 : 27,156,290,042
1960 : 32,064,619,064
1970 : 54,350,971,661
1980 : 127,097,367,798
1990 : 266,902,367,798
2000 : 571,121,194,344

By what multiple did the amount of currency grow from 1910 to 2000 ?

2006-11-30 13:05:43 · 8 answers · asked by vivixoxo 2 in Mathematics