Explanation:
A.
Yes
B.
2KHP + Mg(OH)2 = 2KOH + Mg(HP)2
KHP is an acidic salt which reacts with Mg(OH)2 which is a base via double displacement/decomposition reaction.
C.
• One approach is to prepare the solution volumetrically using KHP crystals.
• Preparing 1 liter of 0.1 M KHP you would add 0.1 moles of KHP
Molar mass of KHP(C8H5KO4)
= (12*8) + (5*1) + 39 + (16*4)
= 204 g/mol
Number of moles = mass/molar mass
= 20.4/204
= 0.1 mol.
• This is added to a 1 liter volumetric flask, add deionized water until near the fill line, stopper and mix
D.
Number of moles = molar concentration * volume
= 0.025 * 0.100
= 0.0025 mol
Equation for the reaction:
Ba(OH)2 + 2KHP --> Ba(KP)2 + 2H2O
1 mole of Ba(OH)2 reacted with 2 moles of KHP. By stoichiometry,
Number of moles of Ba(OH)2 = 0.0025/2
= 0.00125 mol.
Molarity = number of moles/volume
= 0.00125/0.01
= 0.125 M of Ba(OH)2.
Changes into new substances called product.
Answer:
The correct option is C.
In a tightly closed container in a dry and well-ventilated place
Explanation:
Hydrogen peroxide should be store in a tight closed container and ventilated area because it is an oxidizing agent and it's has oxidizing characteristics. If to is exposed or the bottle lid is broken and exposed it can react and liberate oxygen and heat. It can react with the air and chemical it is exposed with. This will make it to be less effective and there will be a change in it's composition.
The complete question is as follows: Which statement describes the way in which energy moves between a system reacting substances in the surroundings.
A) molecule Collisions transfer thermal energy between the system and its surroundings
B) The thermal energy of the system and it’s surroundings increase
C) The potential energy of the system and it’s surroundings increases
D) molecular collisions create energy that is then released into the surroundings
Answer: The statement, molecule Collisions transfer thermal energy between the system and its surroundings describes the way in which energy moves between a system reacting substances in the surroundings.
Explanation:
When there will occur an increase in kinetic energy of molecules then there will occur more number of collisions.
When kinetic energy between these molecules tends to decrease then they will release heat energy into their surroundings.
As a result, it means that molecule collisions transfer thermal energy between the system and its surroundings.
Thus, we can conclude that the statement molecule Collisions transfer thermal energy between the system and its surroundings describes the way in which energy moves between a system reacting substances in the surroundings.
Answer:
NH3(aq) + HNO3(aq) → NH4NO3(aq) Calculate the volume of an acid (1.5 M HNO3) needed to neutralize the 1.5 M HNO3.
Explanation:
