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what law is illustrated by the fact that ice,water,and steam consist of 88.8% oxygen and 11.2% hydrogen by mass.
After losing the electron, how many protons will Na have in its nucleus? Sodium (Na), atomic number 11, has a tendency to lose an electron in the presence of chlorine
The molar heat capacity of a compound with the formula C2H6SO is 88.0 J/mol-K. what is the specific heat of this substance.
A 20.0 ml sample of 0.200 M Hbr solution is titrated with 0.200M of NaOH solution. Calculate the pH after 16 ml of NaOH has been added.
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of magnesium metal in a single replacement reaction. how many grams of lithium are required?
How many grams of P2O5 gas are present in a 750 ml container that is at 75 degrees C and at a pressure of 590 mm Hg?
The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen gas, as is done to fill weather observation balloons.
The mass of a cube of iron is 363 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Determine the value of work (w) when a piston of volume 0.2 litres expands against an external pressure of 200 kPa to a volume of 3.4 Litres?
The work function for Cu metal is 4.80 eV. If a piece of Cu is bombarded by violet light (λ = 4,000 Å), will electrons be ejected? "YES" or "NO" with supporting argument/calculation.
A 0.0560 g quantity of acetic acid is dissolved in enough water to make 50.0 mL of solution. Calculate the concentration of H+, CH3COO-, and CH3COOH at equilibrium. Ka for acetic acid= 1.8x10^-5.
a 4 liter flask contains nitrogen gas at 25C and 1 atm. what is final pressure if 2 g of N2 gas are added and flask is cooled to -55C?
Give the quantitative species inventory for the system ultimately resulting from a mixture
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