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Calculate the frequency of the light that hits the plate that extracts and gives movement to the electrons, also calculate the wavelength of this radiation. Data: h = 6.63 x10^-34 J×s; c = 3 x10^-8 m / s. ; electron charge = 1.6 x 10^-19 C. add figure.
if 5.00 g of each NH3, O2, and CH4 are reacted, what mass of HCN will be produced, assuming 100% yield
Hydrogen has two naturally occurring isotopes, 1H and 2H. Chlorine also has two naturally occurring isotopes, 35Cl and 37Cl. Thus, hydrogen chloride gas consists of four distinct types of molecules
question a 0.5220 g sample of an unknown monoprotic acid was titrated with 9.98times10?2 m naoh . the equivalence point
A) An HBR acid solution has a density of 1.25 g/ml the acid solution is 20% Explain what is the molarity and what is the molality. B) Define what is the normal concentration of 3.2M solution LiI
Sodium and water react according to the equation 2Na +2H2O=>2NaOH + H2. What number of moles of H2 will be produced when 4.0 mol Na is added to 3.3 mol H2O
How many grams of magnesium chloride could be formed from the reaction of 6.82 g of magnesium with excess HCl?
A solution of 2.50 g of a compound dissolved in 25 g g of benzene freezes at 4.3 C. Calculate the molar mass of the compound and determine its molecular formula if its empirical formula is C6H5P.
A sugar water mixture contains 45.8g of sugar and 108.5 g of water. What is the percent by mass of sugar and the percent by mass of water in the solution?
A volume of 18.0 L contains a mixture of 0.250 mols N2 , 0.250 mols O2 , and an unknown quantity of He. The temperature of the mixture is 0 degrees C , and the total pressure is 1.00 atm.
convert the composition of the following alloy from atom percent to weight percent a 44.9 at of silver b 46.3 at of
Solid iron(III) oxide reacts with solid aluminum to produce solid iron and solid aluminum oxide. If 50.0 grams of iron(III) oxide were mixed with 50.0 grams of aluminum, what maximum mass of iron metal could be produced?
How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 63.0 mL of 0.610 M CuSO4 solution.
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