General Chemistry Answers

1. Iodic acid, HIO3, can be prepared by reacting iodine, I2, with concentrated nitric

acid. The skeleton equation is:

I2(s) + NO3

-

(aq) → IO3

-

(aq) + NO2(g). Balance this equation using the half reaction method.

How many moles present in 23.3 Kg Ar ?  

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1. Calculate the vapor pressure of a solution made by dissolving 65.0 g CaCl2, C6H12O6, in 655 g of water. The vapor pressure of pure water is 47.1 torr at 37°C.

2. What is the vapor pressure of an aqueous solution that has a solute mole fraction of 0.2000? The vapor pressure of water is 35.576 mmHg at 25 °C.

complete the equation in your answer booklet for the decay of phosphorus-30 by writing a notation for the missing product.

List the radicals you know

exactly 15.6 g of cab4 compound was dissolved in 1500 cm³ of water. calculate the total number of b atoms in 500 ml of the solution. 

How do you infer that cathode rays are ubiquitous for all matters? 

Caffeine, a stimulant found in coffee and some soft drinks, consists of 49.5% C, 5.15% H, and 28.9% N by mass; the rest is oxygen. Given the molar mass of caffeine is 195 g/mol, determine its molecular formula.

Vanillin, the compound responsible for the flavour vanilla, has a percentage composition of 63.2% C,

5.26% H, and 31.6% O by mass. Determine the empirical formula of vanillin.