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Element Y has two natural isotopes: Y-62 (61.940 amu) and Y-64 (63.928 amu). Calculate the atomic mass of element Y given the abundance of Y-62 is 68.07%. (Hint: What do all percents need to add up to?)

I agree that I have completed a thorough honorlock room scan which clearly shows my work area. I agree that I will uphold academic integrity during this exam. I agree that I will not use any external notes, books, phones, or any other electronic device. I agree that I am taking this exam alone without assistance from anyone else. I understand that if I do not follow these conditions, I will receive a grade of 0 on this exam

Sterling silver is composed of 92.5% silver and 7.5% copper. If a sterling silver ring contains 6.55 g of silver, what is the mass of the ring? Show all work

35 grams of water is decomposed to produce 31 grams of oxygen and hydrogen. How many grams of hydrogen are produced?

If a marble weighs 3150 mg, what is the mass in centigrams? Show all work

Before we start, show your two pieces of blank scratch paper to the camera. Failure to do this may constitute academic dishonesty and result in a grade of 0 for the exam

Multiply 1.50 cm by 1.050 cm by 0.8 cm and round the answer to the correct number of significant figures. Show all work

According to Susan Bardo, with Descartes’ rationalism, objectivity replaced what as the chief philosophical issue?

Which of the following pre-modern philosophers is cited as offering an argument similar to Descartes’ cogito argument?

What is the display output of the following code?  Display output is what is produced by the print statement. score = 82if score >= 70:           print (‘C’)elif score >= 80:           print (‘B’)elif score >= 90:           print (‘A’)else:            print (‘not passing’)