What is the percent yield if 5.64 g of copper are produced when 1.87 g of aluminum reacts with an excess of copper(II) sulfate?

Aluminium has a density of 2.70g/cm(cubed). How many moles of aluminum are in a 13.2cm(cubed) block of the metal substance?

QUESTION 1 Please answer the questions below completely. Show ALL work for credit. Give all answers in 3 significant figures. Please calculate molecular weight (mass) to two numbers after the decimal. You can use the f button to build you equations. 1. Determine the theoretical yield of HCI if 60.0 g of BCI3 and 37.5 g of H20 are reacted according to the following balanced reaction. H20 is in excess. A possibly useful molar mass is BCI3 = 117.16 g/mol. BCI3(g) + 3 H20(1) → H3BO3(s) + 3 HCI(g) 2. Calculate the percent yield if the actual yield is 37.1 g HCI. T TT Arial 3 (12pt) ▼T-三 因i Y Words:0 Path: p Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers DELL he prtsc F10 Esc F1 F2 F3 F4 F5 F6 F7 F8 F9

Solution Stoichiometry: Practice Questions Instructions Answer the following questions in the space provided. What mass of gold is produced from the reaction of excess iron with 150 mL of 0.75 mol/L gold (1II) nitrate solution?

2.CaCl2  +  Na2CO3  ---> Given 74.3 g of CaCl2 and 5.94 x 1023 formula units of Na2CO3 , how may formula units of NaCl would be formed? If 70.5 g of NaCl is collected during lab, what is the percent yield of NaCl in the reaction? _____x10^_______ formula units NaCl _____% NaCl   Blank 1: Blank 2: Blank 3:

What is the percent yield of NH3 for the reaction depicted in the following figure? The blue spheres represent nitrogen and the white spheres represent hydrogen.

Use the References to access important values if needed for this question. According to the following reaction, how many moles of oxygen gas are necessary to form 0.625 moles carbon dioxide? carbon (graphite) (s) + oxygen (g) → carbon dioxide (g) Amount = mol

According to the following reaction, how many grams of mercury(II) oxide are necessary to form 0.349 moles oxygen gas? mercury(II) oxide (s) mercury (1) + oxygen (g) grams mercury(II) oxide

When sodium chloride reacts with silver ni- trate, silver chloride precipitates. What mass of AgCl is produced from 61 g of AgNO3? Answer in units of g.

How many molecules (not moles) of NH3 are produced from 7.43×10-4 g of H2? Express your answer numerically as the number of molecules. • View Available Hint(s) 2.47 • 10-4 molecules Submit Previous Answers X Incorrect; Try Again; 3 attempts remaining