20. mol H2 reacts with 8.0 mol O2 to produce H2O. Determine the number of grams reactant in excess and number of grams H2O produced. Identify the limiting reactant. 8.1 g H2 , 2.9 x 102 g H2O 17. How many litres of O2 gas are required to produce 100. g Al2O3?
(Divide the mass of the liquid calculated above by the volume of the liquid.) * Trial 1: 10.16/8.12=1.25 * Trial 2: 10.61/8.26=1.28 * Trial 3: 10.38/8.52=1.22 Part II: Density of Irregular-Shaped Solid 3. Calculate the volume of the irregular-shaped solid for each trial.
Materials and Methods Part 1 For the cation elimination test first 10 drops of potassium, iron (III), zinc (II), copper (II), and cobalt (II) were added to 5 centrifuge tubes and the color was recorded. Then for the metal hydroxide test, 6 M NaOH was added drop wise till a precipitate was formed. Each solution except potassium formed a precipitate, so then 10 additional drops of NaOH were added to the remaining solutions. Tubes were cleaned with distilled water and 6 M HCL. Next was the ammonia test 10 drops of each metal solution were added to new centrifuge tubes and 15 M NH4OH was added until the solution changed color or a precipitate was formed.
Name: ______________________ Class: _________________ Date: _________ ID: A quiz 6.1-6.3 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ ____ 1. Determine which binomial is a factor of −2x 3 + 14x 2 − 24x + 20. a. x + 5 b. x + 20 c. x – 24 d. x – 5 2. The volume of a shipping box in cubic feet can be expressed as the polynomial 2x 3 + 11x 2 + 17x + 6. Each dimension of the box can be expressed as a linear expression with integer coefficients.
3.03 Periodic Trends Julianne Mazzaro 1. Refer to the graph that you created in Part I of this assignment. Describe the general trend or patterns that you observed in the atomic radius as you go across the periodic table. As the number of protons (atomic number) gets bigger, the atomic radius gets smaller. The largest decrease in size was from 3 to 4, and it leveled out after the 5 to 6 decrease.
Why is the multiplier related only to consumption spending? (5 points) The multiplier is “the number by which a permanent change in autonomous real investment or autonomous real consumption is multiplied to get the change in the equilibrium level of real GDP” (Miller, 2012, pg. 265). An increase in the real investment or in components of consumption will cause a rise in the real GDP and a decrease in real spending will cause a decrease in the real GDP. To calculate the multiplier one takes 1 and divides it by 1 minus the marginal propensity to consume, which is equal to one divided by the marginal propensity to save.
Using a test tube holder, heat the R tube over the Bunsen burner, moving the tube in a circular motion until all the water has evaporated. The P tube will be carefully heated next, for about 10 minutes, until all the water has evaporated, and there is a white substance in the tube. After the water has evaporated, continue heating the tube over the burner for a minute longer, being careful to watch out for purple gas and yellow spots. The P tube
During 2011, Z-Mart made installments sales of $300,000 and received payments of $135,000 on those sales. Z-Mart's gross profit on sales is 30%. Required: Prepare the necessary journal entries for 2011. 10 Solutions Multiple Choice Question Number Answer 1 a 2 c 3 b 4 c 5 d 6 c 7 a