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Question- If .5 M of a monoprotic weak acid (Ka 5.9*10^-5) is titrated with NaOH, what is the pH at the half equivalence point?
I am in hurry anyone is there provide me the answer in quick phase
What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius
To what volume should you dilute 54.0 mL of a 4.60 M KI solution so that 23.5 mL of the diluted solution contains 3.85 g of
please convert thema 456 cal to joulesb 22.3 j to caloriesc 234 kj to caloriesd 12.4 cal to joules-calculate the amount
The effective nuclear charge tends to decrease from left to right across any period of the periodic table. 3.Electrons in the 2s orbital feel a greater attraction to the nucleus than the 2p electrons and are therefore lower in energy. 4. Valence e..
Cyclopropane gas is 85.7 % C and 14.3 % C H by mass and has a density of 1.71 g/L at 755 mm Hg and 25C. a) What is the molar mass of cyclopropane. b) What is the chemical formula for cyclopropane
if your body develops a charge of -20 (microcoulombs), how many excess electrons has it acquired?
Identify the acid and the base in the following reactions. (The format CO2 for CO2, (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-)
When zinc sulfide is heated in air, zinc oxide and sulfur dioxide forms: 2ZnS(s) + 3O2(g) = 2ZnO(s) + 2SO2(g) How many grams of zinc oxide is formed when 100 grams of zinc sulfide is burned
potassium bromide kbr is soluble to the extent of 64g per 100g of h2o at 20c. is the solution saturated or unsaturated?
1.if the methane ch4 contained in 2.00 l of a saturated solution at temperature of 25 degree celsius was extracted and
Several compounds containing merely sulfur (S) and fluorine (F) are known. Three of them have the subsequent compositions. Explain how do these data illustrate the law of multiple proportions
When 0.564g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.3C to 29.8.C Find Delta Erxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a s..
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