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- Is there a difference between a homogeneous mixture of hydrogen and oxygen in a 2:1 mole ratio and a sample of water vapor? Explain.1. Percentage Composition 1. Calculate the percentage of carbon, hydrogen, and oxygen (by mass) in C12H22O11- Answer must be up to one (1) decimal place only. (2. Which of the following mixtures can be separated by handpicking? * A. solution B. homogeneous C. heterogeneous D. both B and C 3. In your drawer, several solids like thumbtacks, paper clips and pieces of papers are scattered. How will you separate the thumbtacks and paper clips from the pieces of papers? * ) A by handpicking () B. by magnetizing () C. by decantation () D. both A and B 4. Which of the following cannot be separated by magnetizing? * ( A. pebbles and paper ( B. pebbles and paper clips () C. pebbles and staple wires () D. water and pieces of iron
- When is sieving and fractional distillation a good method for separating mixtures? Cite an example."Because composition does not change during a physical change, the appearance of a substance does not change" Is this true or false? ExplainA student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO, and (NH,),CO,. The mixture is 69.14% CO, is by mass. What is the mass percent of MgCO, in the mixture? mass percent of MgCO3: TOOLS X10 wc2 (1).pdf wc2.pdf WC1 (1).pdf Show All 3,417 00 16 étv W MacBook Air 80 DII DD 000 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 2$ & 4 5 7 8. 9. delete NA of
- A student performed the identical experiment to isolate Fe, NaCl, and SiO2 in a mixture. They performed every step correctly except they extracted with 10 mL of deionized water only once rather than the recommended four times. a.) Will this error make the calculated mass percent of Fe, NaCl, and SiO2 accurate or inaccurate. Explain your answer. b.) Will the calculated mass percents of Fe, NaCl, and SiO2 be higher or lower than the true values? - Mass percent of Fe (HIGHER or LOWER) Must explain answer. - Mass percent of NaCl (HIGHER or LOWER) Must explain answer. - Mass percent of SiO2 (HIGHER or LOWER) Must explain answer.The typical grade of Pine Point ore is 3% for Pb, and 7% for Zn. Suppose the sample pictured in the previous question is 13.6 kg in weight. Estimate the masses of Pb and Zn (in g) contained in the sample. Pb: Answer g Zn: Answer g Looking for the "Answers" Thank You!Calculatic E - E- I E|X 4 D S... E S . . 7 Name Date Period: Calculating Percent Composition Directions Use the equation below to calculate the percent composition of each element in the compound. You may do your work on a separate sheet of paper, but make sure to transfer your final answers onto this page. Submit both this sheet and your work (take a picture of it and submit that) upon completion. mass of element % by mass x 100% mass of compound 16 12 47 H. S Mg Ag Hydregen 1) Calculate the percent composition of each element In ammonla (NHJ. N= H= 2) Calculate the percent compostlon of each element In Mgso.. Mg= S= 3) Calculate the percentage of each element In Ag.0. Ag=