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A particular bracelet was made from rose gold with the composition of 72.00 % Au, 2.75 % Ag and 25.25 % Cu.  If the bracelet has a mass of 35.7 g, then what mass of Cu does the bracelet contain?   Show your math setup with answer.  An answer only will NOT receive full credit. You may choose to use the equation editor (x  ).  Click on the three vertical dots to find it in the tool bar. Express answer using significant figure rules. Equation = 1 pt Math setup = 2 pts Answer  = 1 pt Sig Figs = 1 pt

Rank the following according to decreasing wavelength:  red, gamma, infrared, microwaves List the words in the appropriate order in your answer.

What mass of CaI2 would need to be used to make 400.0 mL of a 0.12 M calcium iodide solution?

How many protons, neutrons, and electrons are in an atom of osmium-190?

What is the molecular shape of a chloroform, CHCl3, molecule?  

The solubility maximum for LiCl is given below for several different tempratures: 70 g LiCl in 100 g water @ 5o C 83 g LiCl in 100 g water @ 25o C 105 g LiCl in 100 g water @ 55o C If a solution contains 465 g LiCl in 633 g water @ 5o C, then it would be

If 6.50 mL of a 6.0 M HCl solution is diluted with water to make a 0.15 M HCl solution, what is the final volume of the dilute solution? Show your work below (use the math equation  function from the toolbar above if needed).

An unknown gas occupies a volume of 1.50 L at 21°C and 0.950 atm. If the mass is 2.01 g, what is the molar mass of the gas? (R= 0.0821 atm•L/mol•K)

All of the following would indicate a need for mechanical ventilatory support EXCEPT:

Which one of the following atoms has the lowest first ionization energy?