Answer:
We need 2.02 grams of NH3
Explanation:
Step 1: Data given
Mass of methanol = 475 grams
Molality of the solution = 0.250 M
Molar mass of NH3 =17.03 g/mol
Molar mass of = methanol = 32.04g/mol
Step 2: Calculate moles NH3
Molality = 0.250 m = mol NH3 / 0.475 kg
moles NH3 = 0.250 molal * 0.475 kg
Moles NH3 = 0.11875 moles
Step 3: Calculate the mass of NH3
Mass NH3 = moles NH3 * molar mass NH3
Mass NH3 = 0.11875 mol * 17.03 g/mol
Mass NH3 = 2.02 grams
We need 2.02 grams of NH3
The balanced equation for the reaction between HCl and Ca(OH)₂ is as follows;
Ca(OH)₂ + 2HCl ---> CaCl₂ + 2H₂O
stoichiometry of Ca(OH)₂ to HCl is 1:2
mass of Ca(OH)₂ reacting - 5 g
therefore number of moles of Ca(OH)₂ - 5 g / 74 g/mol = 0.068 mol
according to molar ratio
number of HCl moles reacted = twice the number of Ca(OH)₂ reacted
number of HCl moles required - 0.068 x 2 = 0.136 mol
molarity if HCl solution - 0.100 M
there are 0.100 mol of HCl in 1 L
therefore 0.136 mol in - 0.136 mol / 0.100 mol/L = 1.36 L
volume of 0.100 M HCl required - 1.36 L
Answer:
c) that the formation and decomposition of ES is the same for a period of time
Explanation:
Michaelis-Menten equation :
This model explain the approach to enzyme kinetics.The Equation shows how a Free enzyme E and Product P is formed depicting by Following equation.
E+S⇌ES→E+P
Left side represents
E =enzyme
S=substrate
ES=enzyme-substrate complex
Right side
E= Free enzyme
P= product
c) that the formation and decomposition of ES is the same for a period of time
These animals are all invertebrates
Answer: The Limiting Reagent is the stuff that limits the solution of the reaction.
Ex: A potato pairs with a tomato. You have 4 potatoes and whatever amount of tomatoes, your solution will always for 4 pairs because potatoes is the <em>limited reagent.</em>
