Answer:
wind
pollution free no use of resources
F student 1 because it is a more logical answer
The correct answer is A. T<span>rapping of heat by water vapor and gases in the atmospere. The sun gives off short-wave radiation, which is then absorbed by the atmosphere, which keeps us nice and cozy here on Earth! </span>
Answer:
Explanation:
KCL + AgNO3 = AgCl + KNO3
equal moles
25.7g KCl/74.5 g/mol=0.345 mol
0.345mol/0.9 L= 0.383 molar
0.383 mol/L times 0.0325L= 0.013 mol KCl
Therefor need 0.013 mol AgNO3
0.013 mol AgNO2/0.036 L = 0.35 molar
You have not specified any indication of volume, but I will assume this is in a vessel of 1.00 L.
If 0.0100 mole of H+ is added to this buffer, then in the equilbrium
<span> NH3+H2O ⇄ NH4+ + OH-
the H+ reacts with OH- and decreases [OH-] and shifts the equilibrium to the products. [NH4+] will increase by 0.0100 M and [NH3] will decrease by 0.0100M. So the new concentrations are [NH4+] = 0.110 M and [NH3] = 0.09 M. Then
[OH-] = [NH3]/[NH4+] * Kb</span>
= 0.09/0.110 *1.8*10^-5
<span> = 1.47 x 10^-5
and pOH = -log(</span><span>1.47 x 10^-5) = 4.8318.
Since pH + pOH = 14,
pH = 14 - 4.8318 = 9.168
The answer to this question is therefore 9.168.</span>