Questions and answers by

lyne

Questions (127)

what are three chemical characteristics and ten physical characteristicsso far for physical i have -color -taste -smell -size
1. 2 answers
2. 524 views
what would the the answer to 55%7 be?
1. 1 answer
2. 325 views
The first character of a(n)__ must be a letter or an undeerscore(_).a.class b.identifier c.module d.program please explain
1. 0 answers
2. 483 views
What mass of iron contains the same number of atoms as 70.05 g of nitrogen?
1. 6 answers
2. 734 views
Dr Bob please answer below
1. 1 answer
2. 373 views
Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar.okay i did it and i got just the C right and
1. 7 answers
2. 2,584 views
Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar.help please?
1. 1 answer
2. 558 views
The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by mass. What is the empirical formula for adrenaline?
1. 4 answers
2. 1,148 views
The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 amu.
1. 7 answers
2. 8,952 views
which element has a more favorable (exothermic) electron affinity?K Mg how do i determine this?
1. 1 answer
2. 1,339 views
A compound containing only sulfur and nitrogen is 69.6% S by mass; the molar mass is 184 g/mol. What are the empirical and
1. 1 answer
2. 3,991 views
a certain substance strongly absorbs infrared light having a wavelength of 3.75µm. what is the frequency of this light in
1. 7 answers
2. 902 views
A 46.2 gram sample of copper is heated to 95.4 degrees celcius and then place into a calorimeter containing 75.0 grams of water
1. 2 answers
2. 4,222 views
how do i balance the following(fill in the blanks):1.) __BF3 + __Li2SO3 --> __B2(SO3)3 + __LiF 2.) __CaCO3 + __H3PO4 -->
1. 8 answers
2. 2,166 views
calcium hydroxide reacts in a neutralization reaction with sulfuric acid in a 1:1 ratio to form water and calcium sulfate. if
1. 2 answers
2. 1,100 views
if you have 55.6 grams of nitrate ions in a compound that consists of nitrate ions and plumbous ions, how many grams of the
1. 3 answers
2. 485 views
if you have 55.6 grams of nitrate ions in a compound that consists of nitrate ions and plumbous ions, how many grams of the
1. 2 answers
2. 498 views
solve for the variable�ã(square root) �ãy+6 - �ãy = �ã2 would i square both sides first? im stuck
1. 3 answers
2. 493 views
what is the name for CsF?i had cesium flouride but it's wrong... help?
1. 4 answers
2. 580 views
DrBob has given you the equation to use:k2 = [H^+][SO4^-]/[HSO4^-] and the values to substitute [H^+] = 0.01 + x [SO4^-2] = x
1. 3 answers
2. 519 views
Next step, multiply both sides by (.01-x).012(.01-x)=.01x+x^2 is the binomial x^2 + .002x-1.2x10^-4 what is the next step is the
1. 1 answer
2. 409 views
Next step, multiply both sides by (.01-x).012(.01-x)=.01x+x^2 gather terms, put in standard binomial form, use the quadratic
1. 2 answers
2. 556 views
k2=[H][SO4]/[HSO4].012=(.01+x)(x)/(.01-x) Solve for x, and calculate pH where H is .01+x When I am solving for x does it become
1. 1 answer
2. 461 views
What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is
1. 0 answers
2. 507 views
What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is
1. 1 answer
2. 425 views
Posted by lyne on Tuesday, March 25, 2008 at 11:44pm.What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric
1. 1 answer
2. 511 views
What is the pH ( 3 significant digits) of a 0.01 M solution of sulfuric acid? Hint is that the first ionization constant is
1. 1 answer
2. 398 views