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11 Nov 2019
2.38141 0.8735g of potassium .31 Chlorine 3. A 2.3814 g sample of a particular compound was found to contain 0.8735 g of potassium, 0.7931 g of chlorine with the balance being oxygen. Calculate the simplest formula of the compound 4. Why is the crucible always cooled before it is weighed? Hot objects weign less than they do when (oled 5. If not all the magnesium burned, how would that affect the MgO ratio? Would the ratio become larger or smaller than the true value? Justify and explain your answer. one Would have move whmich wovld resutt in the 6. A liquid sample weighing 120.7 grans is analyzed and found to contain 7242 sof The ratio would belarger in tve vatu e becase magnes ivm being bigg carbon, 16.09 g of hydrogen, and 32.19 g of oxygen. What is the empirical, or simplest, formula of this substance? Carbon 72 42q 7. A sample of a hydrocarbon (which contains only C and H) weighs 0.234 grams. It is analyzed and found to contain 0.201 g of carbon. What is the empirical, or la of this substance? If the molecular weight of the substance is 56, what is the molecular formula? 8. A compound is analyzed and found to be 27.06 % sodium. 16.47 % nitrogen, and 5647 % oxygen. What is the empirical formula of this substance? 9. What is the percent composition of potassium sulfite? 97
2.38141 0.8735g of potassium .31 Chlorine 3. A 2.3814 g sample of a particular compound was found to contain 0.8735 g of potassium, 0.7931 g of chlorine with the balance being oxygen. Calculate the simplest formula of the compound 4. Why is the crucible always cooled before it is weighed? Hot objects weign less than they do when (oled 5. If not all the magnesium burned, how would that affect the MgO ratio? Would the ratio become larger or smaller than the true value? Justify and explain your answer. one Would have move whmich wovld resutt in the 6. A liquid sample weighing 120.7 grans is analyzed and found to contain 7242 sof The ratio would belarger in tve vatu e becase magnes ivm being bigg carbon, 16.09 g of hydrogen, and 32.19 g of oxygen. What is the empirical, or simplest, formula of this substance? Carbon 72 42q 7. A sample of a hydrocarbon (which contains only C and H) weighs 0.234 grams. It is analyzed and found to contain 0.201 g of carbon. What is the empirical, or la of this substance? If the molecular weight of the substance is 56, what is the molecular formula? 8. A compound is analyzed and found to be 27.06 % sodium. 16.47 % nitrogen, and 5647 % oxygen. What is the empirical formula of this substance? 9. What is the percent composition of potassium sulfite? 97
Deanna HettingerLv2
29 Mar 2019