True!
For example:
The atomic mass of carbon is 12.011 (i think) and the weight of carbon is 12. But with C13 and C14 being a little higher, it makes the average higher. Random fact: C14 is used for carbon dating.
Answer:
<em>The three gases, in the three identical containers, will all have the same number of molecules</em>
Explanation:
If these three gases (Helium He, Neon Ne, and Oxygen 
) are all contained in separate identical containers with the same volume. And they are all stored at the same temperature, and pressure. Then, they'll all contain the same number of molecules. This is in line with Avogadro's law which states that "Equal volume of all gases, at the same temperature and pressure, have the same number of molecules."
Answer: I believe/don't believe that smoking increases the risk of lung cancer because...(add your three reasons if writing an essay)
Explanation:
Since a hypothesis is basically your inference, these hypothesis can vary.
:) Hope this helped
Answer:
Silver chromate, Ag2CrO4 , a sparingly soluble compound, has a solubility product, Ksp , of 1.2 x 10-12
What is the molar solubility of Ag2CrO4 in pure water?
Explanation:
Use the ICE approach: Write the Ksp equilibrium:
Ag2CrO4(s) = 2 Ag+(aq) + CrO4 2- (aq) Ksp = 1.2 x 10 -12
I : 1 0 0
C : (“0”) +2x +x
E : 1 2x x
Note: above, we let x = [CrO4 2- ] and so [Ag+] = 2x )
Ksp = [Ag+] 2 [CrO4 2-]/1 = (2x)2(x) = 4x3 = 1.2 x 10-12
Or, x3 = 3.0 x 10 -13 Take cube root of both sides:
=> x = 6.7 x 10 -5 M = [ CrO4 2- ] => [ Ag+ ] =2x = 1.3 x 10 -4 M
