Objective: Apply the concepts of mole and stoichiometry. Question: In our Limiting Reactant lab, we started with an unknown mixture of two reactants, zinc sulfate and sodium phosphate, that reacted in the experiment according to the following equation: 3 ZnSO: (aq) + 2 Na3PO4 (aq) ? Zn (PO4)2 (s) + 3 Na?SO4 (aq) Realistically, some solid was lost in the experiment, so assume 99.0% yield for the purpose of your calculations. Include definitions, explanations, discussion of limiting reactant and percent yield in your response. Use this student's lab data to calculate the percentage of Sodium Phosphate and Zinc Sulfate in the unknown mixture: Mass of unknown mixture of reactants: Mass of solid precipitate collected: Qualitative test determined limiting reactant: 1.983 g 0.759 g Na PO, made the supernatant cloudy
A basketball player moves down the court, dribbling a basketball. Use Newton's Third Law of Motion and the Second Law of Motion to explain why the basketball returns to the player's hand after it strikes the floor (there should be two distinct parts to your answer). For the Third Law, make sure you identify the action-reaction pair using the notation FA on B and FB on A
Which of these is not a requirement to be a US Senator? 1. must be a natural born US citizen 2. must be a resident of the state when elected 3. must be 30 years old 4.all answers are correct
Given 1: f ( x ) = 12 x + 1 Given 2: g ( x ) ? f ( x ) Given 3: g ( x ) passes through ( 1 , 5 ) Write the equation for g ( x ) Write your answer as either [an equation in y = simplified slope-intercept form] or [an equation in point-slope form] using decimals rounded to the nearest hundredth - do not use spaces.
A decathlete at the Olympics throws a javelin such that its height, h, above the ground can be modeled as a quadratic function of the horizontal distance, d, that it has traveled. Which of the following is a realistic quadratic function for this scenario? (1) 1/100d^2 +75d+3 2) 1/100d^2 +75d-3 3) -1/100d^2 +75d+3 4) -1/100d^2 +75d-3
Question Is this statement true or false? The Chinese knew how to produce silk by about 2700 B.C. Responses true false
Drag each of Jackson's actions to the effect it had on different populations. One tile will not be used.
Which of the following is the best example of a key difference between capitalist and socialist economies. In capitalistic economies, competition between businesses is kept to a minimum; in socialist economies there is a great deal of competition among businesses Capitalist economies push for perfect equality between all people; socialist economies encourage a great deal of inequality among people In capitalist economies, the government doesn't interfere too much with business ownership; in socialist economies the government owns or runs most businesses. In capitalist economies, religion plays a strong role in all business ownership; in socialist economies religion plays no role in business ownership
Jane and Jill collect yo-yos. The ratio of the number of Janes yo-yos to the number of JIlls yo-yos is 5:4. If jane will give 15 of her yo-yos to her little brother, Jane and Jill will have the same number of yo-yos in their collections. How many yo-yos do both girls have together?
Protons carry ___ compared to electrons. A) an equal magnitude of charge B) more magnitude of charge C) less magnitude of charge Pick ONE only.
Choose the equation that represents the line that passes through the point (6, -3) and has a slope of. 1/2 y-2x+6 y-1x-6 y=2x-3 y=x+3
