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What is the oxidation number of the bromine atom in sodium bromate?

Rank the following metric prefixes in order of increasing (lowest to highest) power of 10.  

Consider the reaction below.   Cu  +  4 HNO3  –>  Cu(NO3)2  +  2 NO2  +  2 H2O   A.   (11 pts – 1 pt each)  Assign oxidation numbers to each atom in the equation.  Make sure it’s clear in your answer to which atom in which substance the oxidation number belongs. B.  (4 pts – 2 pts each)  Identify the oxidizing agent and the reducing agent.  

What is the volume (in L) of 655 grams of methane at 25°C and 745 torr?

6.24 grams of a sugar is burned in a bomb calorimeter, increasing the temperature of the calorimeter from 15.0°C to 37.6°C.  If the heat capacity of the bomb calorimeter is 4.14 kJ/C°, how much heat (in kJ) was involved in this combustion reaction?

Which of the following substances would be written as dissociated in a total ionic equation?

27.33 grams of solid aluminum oxide reacts with 235.1 mL of 5.16 M hydrochloric acid via one of the five types of reactions described in Unit 2 of our CHEM& 161 class.  Show all work, using dimensional analysis, and highlight your answer in a readable background color. A.  (1 pt)  What type of reaction is this? B.  (3 pts)  Write the balanced chemical equation for the reaction, including states of matter. C.  (3 pts)  Which reactant is limiting?   D.  (4 pts)  Calculate the theoretical yield (in grams) of the molecular product. E.   (5 pts) If 15.88 grams of ionic product is obtained, calculate the percent yield.  

2.68 g of zinc reacts with 120.0 mL of 0.750 M hydrochloric acid, producing 6.28 kJ of heat.  Calculate

You carry out a chemical reaction, and obtain 1.261 grams of product.  The expected yield is 1.855 grams of product.  What is the percent yield of product?

A container contains a gas mixture of 1 mol Ar, 1 mol Kr, 1 mol He and 1 mol Ne.  Which gas particles are hitting the container walls with the most force per collision?