1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergejj [24]
3 years ago
14

Can anyone help me with the last question. it whould help me a ton

Chemistry
1 answer:
lina2011 [118]3 years ago
8 0
For the very last question you would first divide 8,900 by 12 and the number you get will be the answer. You should get 741.66
You might be interested in
What is the name of a solution whose concentration of solute is equal to the maximum concentration that
Travka [436]

Answer:

g

Explanation:

7 0
3 years ago
⦁ Find the concentration of H+, OH-, PH and POH of 0.03 M of magnesium hydroxide which ionizes to the extent of only 1 /3 in aqu
lions [1.4K]

Answer:

pH=12.3\\\\pOH=1.7\\

[H^+]=5x10^{-13}M

[OH^-]=0.02M

Explanation:

Hello there!

In this case, according to the given ionization of magnesium hydroxide, it is possible for us to set up the following reaction:

Mg(OH)_2(s)\rightleftharpoons Mg^{2+}(aq)+2OH^-(aq)

Thus, since the ionization occurs at an extent of 1/3, we can set  up the following relationship:

\frac{1}{3} =\frac{x}{[Mg(OH)_2]}

Thus, x for this problem is:

x=\frac{[Mg(OH)_2]}{3}=\frac{0.03M}{3}\\\\x=  0.01M

Now, according to an ICE table, we have that:

[OH^-]=2x=2*0.01M=0.02M

Therefore, we can calculate the H^+, pH and pOH now:

[H^+]=\frac{1x10^{-14}}{0.02}=5x10^{-13}M

pH=-log(5x10^{-13})=12.3\\\\pOH=14-pH=14-12.3=1.7

Best regards!

4 0
3 years ago
What is the coefficient for water after the equation is balanced?
Pie

Answer:

1

Explanation:

6 0
2 years ago
How many kJ are 3,340J?
forsale [732]
The answer I believe is 3.340kj.
8 0
3 years ago
PLEASE HELPPPP???!!!!!!
sertanlavr [38]
Mass of molecule (g) = Mr of substance over avarogado constant
5 0
3 years ago
Other questions:
  • Which formula represents an ionic compound AICI3
    12·1 answer
  • All but one is a method of passve transport in cells
    15·2 answers
  • The radii of the sodium and potassium ions are 102 pm and 138 pm, respectively. which compound has stronger ionic at- tractions,
    15·1 answer
  • A chemist prepares a solution of copper(II) fluoride by measuring out of copper(II) fluoride into a volumetric flask and filling
    14·1 answer
  • How long will it take a piece of strontium-90 (produced in a nuclear test blast) weighing exactly 1000.0 g to be
    8·1 answer
  • Find the equilibrium value of [CO] if Kc=14.5 : CO (g) + 2H2 (g) ↔ CH3OH (g) Equilibrium concentrations: [H2] = 0.322 M and [CH3
    10·1 answer
  • What type of molecule provide cells with energy
    7·1 answer
  • 3.5g of nitrogen combine with 2g of oxygen to produce an oxide of nitrogen
    5·1 answer
  • Water is a ______ molecule and the bond between the H-O is a __ ______ bond.
    11·1 answer
  • What type of compound results from the reaction of an acid chloride and a 2° amine?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!