Well it is Scientific Notation here's what you have to do:
First put the equation down
2.45×10^3
Next its a positive so you will be going to the right:
2450.
Your answer is...
=2450. grams
Answer:
yes and no
Explanation:
If we don't, who knows what they'll do? Remember the stem cell research? that was research that killed an embryo. Then again, that was research, not the entire science itself. Just a limit on WHAT they do would be good.
Hello!
This question can be solved using the
Henderson-Hasselbach equation, but first we need to know the value of pKa
pKa= -log(Ka)= -log(7,1*10⁻⁶)=5,15
Now, we apply the equation:
![pH=pKa+log \frac{[A^{-}] }{[HA]} =5,15+log( \frac{0,025M}{0,037M} )=4,98](https://tex.z-dn.net/?f=pH%3DpKa%2Blog%20%20%5Cfrac%7B%5BA%5E%7B-%7D%5D%20%7D%7B%5BHA%5D%7D%20%3D5%2C15%2Blog%28%20%5Cfrac%7B0%2C025M%7D%7B0%2C037M%7D%20%29%3D4%2C98)
So, the pH of this solution would be
4,98
Have a nice day!
Answer:
Equation of Reaction = AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq)
<u>Steps:</u>
1. Find the moles of AgNO3 with formula n= Mass/Mr (molecular mass)
so you will get moles= 10.0/ 169.87 = 0.05886854654
2. Using stoichiometry you know the equation has 1 mole so the moles of AgCl are gonna be the same; therefore, you will use again the same formula.
3. moles= mass/molecular mass
0.05886854654 = x/ 143.32
You rearrange the formula to find the mass
so mass = moles x molecular mass
mass = 0.05886854654 x 143.32
mass= 8.44 grams
Explanation: