1. Ammonia, NH3, is prepared by the following reaction: 2 NO2(g) + 5 H2(g) - 2 NH3(g) + 2 H2O(I) Calculate the percentage yield of ammonia in a reaction of 45.8g of NO and 12.4 g of H2? Show all the steps to obtain the final answer. 2. PBrs is prepared according to the following reaction: PBr3 + Br2 PBrs When 65.6 g of Br2 reacts with excess PB13, 125.2 g of PBrs is produced. Calculate the percentage yield for the reaction.

O Assignment Score: one Up 70.6% O Resources O Hint Check Am Draw 3-ethylhexanoic acid. Draw the structure in line-bond form. Select Draw Rings More Erase H

LuLu mixes a solution of vinegar for a homemade salad dressing she is making. She makes 300 mL of vinegar by mixing 135 mL acetic vinegar with water. What is the percent by volume of the solute? Use details to support your answer.

Label the parts of the equation correctly. 2 H2 + 0,– 2 H,0 :: Products :: Reactants 6 7 8 9.

Predict the products of the following reaction. If no reaction will occur, use the NO REACTION button. Be sure your chemical equation is balanced!   →+AlsHNO3aq

Methane, CH4, is the simplest hydrocarbon molecule and in its natural state is a gaseous substance.  If you had 64 grams of methane, how many moles of methane would that be? Group of answer choices A. 1 B. 2 C. 4 D. 8

how many mL of pure alcohol are in a 250 mL glass of wine that 14 percent alcohol by volume

5. A catalyst is a substance that: (a) Increases the rate of a reaction (b) Becomes part of the products (c) Decreases the activation energy (d) All of the above

Question 30 How many grams are in 5.60 x 1024 molecules of NaCI? Previous

All of the following are bases except A. NaOHB. Al(OH)3C. HBrD. Ca(OH)2