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Inorganic Chemistry
Stability constant is measure of extent of?
Inorganic Chemistry
Which of the following liquids would make a good solvent for iodine, I2?NH3
CH3OH
HCI
H2O
OH-CH2-CH2-OH
Inorganic Chemistry
Mg (s) + O 2 (g) MgO (s)
Inorganic Chemistry
Diosmetin is a natural flavonoid present in the rind of ‘kalamansi’ and the leaves of ‘alagao’. It is a good antioxidant and anti-inflammatory agent. It is medically prescribed to treat hemorrhoids and varicose veins. Its molecular weight is 300.26 g/mol.
(a) How many millimoles (mmol) of diosmetin are in a caplet that contains 250 mg of diosmetin?
(b) If one is prescribed to take 3 caplets a day, how many milligrams of diosmetin are to be taken a day?
(c) If one has to obtain 1.5 mole of diosmetin for treatment, how many caplets does he need?
Inorganic Chemistry
How many moles of specified particles are present in a sample of each of the following substances if each sample weighs 7.00 g?
a. N2O molecules
b. NO2 molecules
c. P4O10 molecules
d. V atoms
a. N2O molecules
b. NO2 molecules
c. P4O10 molecules
d. V atoms
Inorganic Chemistry
0.5M KOH is one of the reagents needed in the qualitative determination of stimulant cathartic anthraquinone in plants. How many grams of KOH are required to prepare 1L solution? MW KOH = 56 g/mol
Inorganic Chemistry
In analyzing the crude fiber content of a certain food, 0.313N NaOH is required. What is the mass of NaOH pellets needed to prepare 500ml of the solution? What is the molarity of the solution?
Inorganic Chemistry
What is the molality of a 10% by mass NaCl solution when used in qualitative determination of
tannins in plants?
tannins in plants?
Inorganic Chemistry
1. How much salt and how much water must be mixed to make 250 g brine solution that is 50% salt by mass?
2. An isotonic saline solution was prepared by dissolving 0.92 g of NaCI in enough distilled water to make 100 ml solution. What is the percent by mass/volume of the solution?
3. 0.5 M KOH is one of the reagents needed in the qualitative determination of stimulant cathartic anthraquinone in plants. How many grams of KOH are required to prepare 1L solution? MW KOH = 56 g/mol
4.In analyzing the crude fiber content of a certain food, 0.313N NaOH is required. What is the mass of NaOH pellets needed to prepare 500ml of the solution? What is the molarity of the solution?
5. What is the molality of a 10% by mass NaCl solution when used in qualitative determination of tannins in plants?
2. An isotonic saline solution was prepared by dissolving 0.92 g of NaCI in enough distilled water to make 100 ml solution. What is the percent by mass/volume of the solution?
3. 0.5 M KOH is one of the reagents needed in the qualitative determination of stimulant cathartic anthraquinone in plants. How many grams of KOH are required to prepare 1L solution? MW KOH = 56 g/mol
4.In analyzing the crude fiber content of a certain food, 0.313N NaOH is required. What is the mass of NaOH pellets needed to prepare 500ml of the solution? What is the molarity of the solution?
5. What is the molality of a 10% by mass NaCl solution when used in qualitative determination of tannins in plants?
Inorganic Chemistry
Which of the following reactions involve redox In each case where redox occurs state what has been oxidised and reduced
(a) NaOH +HCl --- NaCl +H2O
(a) NaOH +HCl --- NaCl +H2O
