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Do elements and compounds exist as molecules? and why?
If the caffeine concentration in a particular brand of soda is 2.43 mg/oz, drinking how many cans of soda would be lethal? Assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.
A mixture of 6.5 mole of H2 at 3.5 moles of O2 gas was contained in a 3m³ container at 273k.calculate the pressure of the gas mixture
nitric acid + sodium oxide
What is the mass of 2,15moles of sulphur
A chemist determines by measurements that 0.055 moles of oxygen gas participate in a chemical reaction.
Calculate the mass of oxygen gas that participates.
Round your answer to 2 significant digits.
(4.0x10^20) (3.0x10^15)
a graduated cylinder contains 20.5ml of water. what is the new water level after 41.3g of silver metal with a density of 10.5g/cm3 is submerged in the water
It is desired to make up 100kg of a solution containing 35%wt salt. Two solutions are available, one containing 10%wt salt and the other containing 50%wt salt. How many kg of each solution will be required?
How much of 0. 3 AM start solution of sucrose what you need to make 150 mL dilution of sucrose at a final concentration 0.1
