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Vanadium atom has a radius of 121 pm and crystallizes with a BCC unit cell. Determine the number of unit cells present in 1.9 cm3 solid sample of Vanadium. Express answer in scientific notation
What is the pH of a buffer solution containing 0.63 NaHCO3 and 0.32 H2CO3?
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 8.10 MJ
8.10 MJ of energy in the form of heat if the temperature of the sodium is not to increase by more than 10.0 °C?
10.0 °C? Use 𝐶
P
=30.8 J/(K⋅mol)
CP=30.8 J/(K⋅mol) for Na(l)
Na(l) at 500 K.
An unknown salt is added continuously to water until salt is no longer dissolved. Initially, the water weighs 50g. When the mixture reached 65g, salt can no longer be dissolved. What is the saturation concentration of the salt in g/L?
what is the % by mass of a solution with 35.0g of salt dissolved into 230g of hot water?
Calculate how many grams of O2(g)
can be produced from heating 35.7 g KClO3(s)
Determine all possible ratios for the following balanced chemical equations.
a) 4Al(s) + 3O2(g)→2Al2O3(s)
b) 3Fe(s) + 4H2O(l) → Fe3O4(s) + 4H2(g)
Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.129 mol of maleic acid has a mass of 15.0 g, what are the empirical and molecular formulas of maleic acid?
