- How many copper atoms are in the formula cupric chloride is it 1 or 2?

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Rolls of foil are 304 mm wide and 0.012 mm thick. density of foil is 2.7 g/cm3
What maximum length of foil can be made from 1.21 kg of foil? The scores of students had a normal distribution with μ=548.6 and σ=28.4
(a) What's the prob. that a student's test scores 555 or higher? A 340-Hz sound travels through pure argon. The wavelength of the sound is measured to be 0.94 m. What is the speed of sound in argon? Calculus help with two particles traveling in the same direction.? How do i find the answer about study?