What is its molecular formula of compound
A compound composed of sulfur and fluorine is found to contain 25.24% by mass of sulfur. If the molar mass of the compound is 254.11 g/mol, what is its molecular formula?
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An Ice cube tray holds 325 grams of water. If the water initially has a temperature of 25 C, how many kilojoules of heat must be removed to cool and freeze the water 0 C?
What is the concentration of the unknown {rm{H}}_3 {rm{PO}}_4 solution? The neutralization reaction is:
Compare the molar solubility of AgOH in pure water, with that in a solution buffered at pH 7.00. Note the difference between the two cases.
The intensity increases as speaker 2 is moved forward and first reaches maximum, with amplitude 2a, when it is 30cm in front of speaker 1. What is the amplitude of the sound (as a multiple of a) if the speakers are placed side by side?
What mass of natural gas {rm{(CH}}_4 ) must you burn to emit 262 kJ of heat?
What is the lowest-frequency standing wave for which there is a node at the junction between the two metals?
The specific heat of liquid water is 4.18 J/mol K. The molar heat of vaporization is 40.6 kJ/mol. The resulting sample contains which of the following?
Human pepsinogen contains 388 amino acids. What is the minimum number of nucleotides that must be present in the mRNA that codes for this protein?
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