Chemistry - September 2006

well what i want to know is how to graph a "vs" problem. so in my situatin does the mass data go on the x axis and the volume on the y axis or is it the other way around?

2006-09-21 17:03:16 · 0 answers · asked by ohmv87 4

Lead metal is produced by heating solid lead(II) sulfide with solid lead(II) sulfate, resulting in liquid lead and sulfur dioxide gas. Write a balanced equation for the reaction using complete formulas for the compounds with phase labels.
Pb2S(s) + Pb2SO4= 4Pb(l)+2SO2

2006-09-21 16:42:41 · 6 answers · asked by Anonymous

2006-09-21 16:26:50 · 4 answers · asked by Raymond Z 3

If Epsom Salt is heated too much a gray product is formed and sulfur trioxide gas is given off. What is the balanced equation?

2006-09-21 16:11:26 · 10 answers · asked by Katie 1

Is the sugar in DNA attached to a bases Nitrogen or one of it's Carbons? i can't remember always get so confused!

2006-09-21 16:10:01 · 4 answers · asked by Anonymous

The concentration of carbon monoxide un an urban apartment is 47ug/m^3. What mass of carbon monoxide in grams is present in room measuring 6x12x22 ft? _______g

Please help, I have it on a test tomorrow, and have no clue on how to do it! Thanks!!

2006-09-21 16:01:42 · 3 answers · asked by lsubetty 2

2006-09-21 15:42:53 · 5 answers · asked by Dom 2

Based on the following structural formula, calculate the percentage of carbon present.
(CH2CO)2C6H3(COOH)

a. 67.4%
b. 64.7%
c. 76.7%
d. 66.7%

30.

What mass of silver chloride can be made from the reaction of 4.22 g of silver nitrate with 7.73 g of aluminum chloride? (Be sure to balance the reaction.)
AgNO3 + AlCl3 = Al(NO3)3 + AgCl

a. 12.7 g
b. 10.7 g
c. 24.9 g
d. 3.56 g

2006-09-21 15:40:57 · 6 answers · asked by Anonymous

2006-09-21 15:37:15 · 1 answers · asked by BWW 3

How many grams of alcohol with a density of 0.900 g/cm3 will have the same volume as 20.0 g of mercury, with a density of 13.6 g/cm3?
a. 15.1
b. 1.32
c. 1.47
d. 22.2


A 15.0 g sample of hydrated copper sulfate was heated to dryness and the new mass measured to be 9.59 g. Calculate the percentage of water in the hydrated crystal. Express your answer to the correct number of significant digits.

a. 36.1%
b. 36%
c. 64%
d. 80%

2006-09-21 15:30:37 · 6 answers · asked by Anonymous

I know that the presence of Ions allow for conductivity of electrons, I am just wondering why?

2006-09-21 15:27:08 · 3 answers · asked by applejacks 3

Lithium has two naturally occuring isotopes, one of mass 6.02 amu and the other of mass 7.02 amu. Find the fractional abundances for these two isotopes. The atomic weight is 6.941 amu.

2006-09-21 15:17:04 · 4 answers · asked by Anonymous

Emerald-green crystals of the substance NiSO4*6H2O are used in nickel plating.

2006-09-21 14:44:20 · 5 answers · asked by Anonymous

2006-09-21 14:31:49 · 3 answers · asked by Anonymous

2006-09-21 14:21:03 · 6 answers · asked by rizwanjattala385 1

A student calculates the density of iron as 6.80 g/cm^3 using lab data for mass and volume. A handbook reveals that the correct value is 7.86 g/cm^3. What is the percent error?
(Show work)

2006-09-21 14:18:42 · 3 answers · asked by Lion 1

Which foods that are easy to digest do you get the most potassium from? Not just high potassium food, the ones that are the easiest to digest as well.

2006-09-21 14:03:35 · 2 answers · asked by Joe M 2

2006-09-21 13:59:51 · 3 answers · asked by Anonymous

A sample of a certain material has a mass of 2.03 * 10^-3 g. Calculate the volume of the sample, given that the density is 9.133 * 10-1 g/cm^3. Use the four-step method in solving the problem.

2006-09-21 13:53:36 · 3 answers · asked by Lion 1

The following numbers are in scientific notation. Write them in ordinary notation.
a. 7.050*10^-3 g
b. 4.00005*10^7 mg
c. 2.3500*10^4 mL

2006-09-21 13:39:43 · 4 answers · asked by Lion 1

Write the following numbers in scientific notation.
a. 0.0006730
b. 50000.0
c. 0.000003010

2006-09-21 13:35:31 · 4 answers · asked by Lion 1

I need only a few drops at a time, not large amounts. I dont want to buy a whole gallon--no where to keep it.

2006-09-21 13:13:45 · 8 answers · asked by blackjack 3

if you snort coke 2 or 3 times a month, if even that, would that make you an addict. what about if you did 1 gram at a time, and you only did it every very few so oftens. not on a regular basis?

likebeing able to go months at a time without it?

2006-09-21 12:59:38 · 24 answers · asked by coke makes my teeth squeeky 2

WHAT DOES METHANOIC ACID PRODUCE WHEN BONDED TO METHANOIC ACID(HCOOH)? HCOOH+HCOOH ----------> ????

2006-09-21 12:56:05 · 5 answers · asked by Anonymous

Ok, so I was doing the typical boiling point elevation experiment by addind salt to water.

This is supposed to raise the boiling point.

However, I noticed no raise in boiling point.

I was using 2 pints of water, and 4 tablespoons of salt.

I dissolved the salt thoroughly.

It didn't do anything though.

If anything, it may have lowered the boiling point.

I was using Kosher salt, it's a flaky type of salt.

What I want to know is, what could've happened to not make the boiling point rise, and what are the EXACT (chemical / physical)differences between Kosher (flaky) salt, and the normal grainy salt.

2006-09-21 12:48:54 · 6 answers · asked by RED MIST! 5

i have tried to figure it out and i reached an end in
5f1 ,,,and thats not possible because it ends in the B Family under the d catagory

2006-09-21 12:23:11 · 5 answers · asked by hamzeeco 2

2006-09-21 12:22:07 · 1 answers · asked by Anonymous

2006-09-21 12:19:20 · 5 answers · asked by Anonymous

Is it only a water problem and if so, exactly what levels does one need to achieve that soft, tasty, foldable pizza? Unless you're from NY/NJ/PA/Conn, you are most likely unfamiliar with the crust problem. I'm told that FL water is hard and NY water is soft. What is the scientific term for the level of minerals in water that determine hardness or softness? Would simply adding some kind of digestible softener do the trick or would other steps need to be taken?

2006-09-21 12:17:59 · 3 answers · asked by Florida Teacher 2

2006-09-21 11:58:04 · 1 answers · asked by The Hero Of The World 1