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Which statement below best explains why Ernest Rutherford was expecting the alpha particles to pass through the gold foil undeflected?

A gas sample at STP occupies a volume of 81.36 L.  What volume will the same gas sample occupy if the temperature is changed to 86°C?  Assume the pressure remains constant.

Given the following information, calculate

150.0 grams of solid potassium chlorate decomposes to produce solid potassium chloride and oxygen gas. Show all work for every part of this problem, including dimensional analysis, sig figs and units!  Highlight your answer in a readable background color.   A.  (2 pts)  Write the balanced molecular equation, including states of matter. B. (5 pts)  Calculate the mass (in g) of potassium chloride that is produced.  Assume 100% yield. C.  (5 pts)  What volume (in L) of oxygen gas is produced, if the gas is at 37°C and 1430 torr?  Assume 100% yield. D.  (5 pts)  What mass (in g) of potassium chlorate is needed to generate 8.73 L of oxygen gas at 22°C and 1.56 atm partial pressure?  Assume 100% yield.

Given the following data: CO(g) +   O2(g)    —>   CO2(g)                            

  You measure the density of “Cola 161” to be 1.051 g/mL.  If Cola 161 is  a sucrose solution, and a calibration curve is available as shown in Figure 1 above, what is the concentration (in M) of Cola 161?    

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?