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a compound consists of 17.6% of hydrogen and 82.4% nitrogen. Determine the empirical formula of the compound

The empirical formula of butane, the fuel used in the disposal of
the empirical formula of butane, the fuel used in the disposal of lighters, is C₂H₅. In an experiment, the molar mass of butane was determined to be 58 g/mol. what is the molecular formula of butane

The heat of fusion per gram of p-dibromobenzene, C6H4Br2, is 86.10 joules and the melting point is 86 degrees celcius. Calculate the ideal solubility at 25 degrees celcius.

Calculate the heat when 150 ml of .500 M HCI is mixed with450 ml of .100 M barium hydroxide. Assuming the temperature of both solutions was initially 25℃ and that the final mixture has a mass of 600 g and specific heat if water, calculate the final temperature of the mixture?

The density of a 56.0% by weight aqueous solution of 1-propanol is 0.8975g/cm3. What is the mole fraction of the compound?

What is the molarity of (SO4)^-2 ion in aqueous solution that contain 34.2ppm of Al2(SO4)3?

what is the ph value at 0.002m

What is the balanced chemical equation for heated FeSO4 x 7H2O, CoCl2 x 6H2O and for FeSO4 x 7H2O?

what is the mass of a box if its weight is 16.0N?

Is it right to say that carbon compounds usually have low melting points & low boiling points because they have covalent bonds.Please help me with explanatory answer.