Science & Mathematics - 1 July 2007

2007-07-01 11:56:16 · 17 answers · asked by Anonymous in Mathematics

1)what is the mass, in grams, of a cubic meter ofblasa wood if the density of balsa wood is .02 g/mL?

2)A student measures a volume as 25 mL, whereas the correct volume is 23 mL. What is the percent error?

3)What is the volume of 700.0 g. of ether if the density of ether is .70g/mL?

4)The density of aluminum is 2.70 g/cm cubed. what is the mass of a cube of aluminum 1.oo cm on each edge?

5) A 10 cm cubed sample of an unknown liquid has a mass of 1.4x10(to the fourth power) mg. What is the density of the liquid in g/cm cubed?

2007-07-01 11:49:57 · 3 answers · asked by Becca 1 in Chemistry

In terms of size and landmass. I say Singapore compared to only the big Island of Hawaii. But if u put all of Hawaii together and compare it to Singapore, isn't Hawaii still bigger?

2007-07-01 11:48:59 · 10 answers · asked by Anonymous in Geography

2007-07-01 11:47:15 · 4 answers · asked by Shawn C 1 in Earth Sciences & Geology

2007-07-01 11:28:32 · 12 answers · asked by Anonymous in Astronomy & Space

2007-07-01 11:27:30 · 9 answers · asked by Anonymous in Biology

2007-07-01 11:25:45 · 5 answers · asked by heppy1712 1 in Mathematics

I Just asked this answer and got some great responses. But what Im wondering is how do I find the Ka of a weak acid or base without any values?


Thanks in adavance. This type of questions always trip me up on tests. Basically Im being asked which of the following anions is the strongest base?
ClO-
ClO3-
ClO4-
Cl-
I-

How am I supposed to know? For reference Im studying pH & pOH.

2007-07-01 11:16:44 · 3 answers · asked by Anonymous in Chemistry

2007-07-01 11:15:12 · 5 answers · asked by Anonymous in Biology

2007-07-01 11:14:59 · 15 answers · asked by me 1 in Astronomy & Space

Last question and I'm done =)

I have to predict which element has

a) A positive electron affinity
b) A very high first ionization energy
c) One of the smallest atomic radii in it's period

correct me if I'm wrong, but don't "a" and "b" contradict each other?

Which element has those 3 properties?

2007-07-01 11:06:46 · 2 answers · asked by Anonymous in Chemistry

My husband was born without part of his sternum what is the scientific term for this?

2007-07-01 11:03:31 · 2 answers · asked by cutenwild1769 5 in Medicine

Is it one big cover-up

2007-07-01 10:58:11 · 4 answers · asked by Anonymous in Medicine

having a set of thousands of objects falling into the hole in a line. At a moment in time the object that is nearest the black hole inside the event horizon takes photos of what it looks like within the black hole. This digital information is immediately transmitted to the next object just outside where it is then transmitted out to the next object behind it.
At a point in time the transmission is across the line of the event horizon, and let us say that the two objects are only one meter apart. Although it would not be possible for light and radio waves to get the whole way out, gravity is not strong enough to prevent the radio waves from crossing that short distance.
Then once the information is outside the event horizon, and it can be transmitted out in the normal way.

Would this be a way (obviously in theory only) to view the insides of a black hole?

Just curious.

2007-07-01 10:55:20 · 6 answers · asked by Anonymous in Astronomy & Space

matter,energy,space & time

2007-07-01 10:53:47 · 5 answers · asked by Quickfix008(∞Cicci∞) 5 in Astronomy & Space

clouds are rather really close or up hig but how do clouds not fall with all the weight of the evatopated water.

2007-07-01 10:49:15 · 10 answers · asked by Anonymous in Weather

2007-07-01 10:42:18 · 23 answers · asked by Quickfix008(∞Cicci∞) 5 in Astronomy & Space

2007-07-01 10:42:10 · 7 answers · asked by drew_addison 1 in Engineering

Two hikers are 8.2 miles apart and begin walking toward each other, and finally meet in 2 hours. One of them walked 0.5 miles per hour faster than the other. How fast did each of them walk?

2007-07-01 10:39:41 · 5 answers · asked by Anonymous in Mathematics

i know its a basic question but i dont know my centimeters and stuff that well

2007-07-01 10:32:39 · 13 answers · asked by Anonymous in Mathematics

How does light manage to travel through void if there are no particles? How does the "perturbance" get transmited?

2007-07-01 10:32:34 · 2 answers · asked by Sticky 2 in Physics

2007-07-01 10:32:06 · 14 answers · asked by Dawn M 1 in Mathematics

2007-07-01 10:27:41 · 13 answers · asked by Mike M. 7 in Astronomy & Space

2007-07-01 10:25:39 · 4 answers · asked by sunshine 4 in Other - Science

itz supposed 2 say if m angle 1 = 50 degrees then m<5= ? i know the answer is 50degrees Corresponding Angles Postulate..but i dont know how 2 get he answer. I need to know the steps..

2007-07-01 10:21:34 · 2 answers · asked by brittany f 1 in Mathematics

2007-07-01 10:19:02 · 6 answers · asked by Anonymous in Zoology

2007-07-01 10:18:17 · 7 answers · asked by Anonymous in Mathematics

2007-07-01 10:15:52 · 2 answers · asked by Megan 1 in Biology

A. a base.
B. an acid.
C. a source of hydroxide ions.
D. a source of H- ions.
E. a proton acceptor.

2007-07-01 10:05:10 · 1 answers · asked by wonderwoman 1 in Chemistry

Ok I just wanted to double check my answer.
The problem is 3 square roots of 25...but since 25 is a perfect square do I add 5 (square root of 25) to 3 or do I multiply it by the 3? Because I multiplied it and got an answer of 15 but I wanted to ask you guys. Thanks

2007-07-01 10:04:12 · 6 answers · asked by ellyceqt 1 in Mathematics