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The decomposition of phosphine, PH3, to P4 (g) and H2 (g) is first order. Its rate constant at a certain temperature is 1.1 min^-1. Calculate its half life.
compounds like ccl2f2 are known as chlorofluorocarbons or cfcs. these compounds were once widely used as refrigerants
how much heat in rm kj is evolved in converting 1.00 rm mol of steam at 160.0circ c to ice at -55.0circ c? the heat
explain the anomalous behavior of water when it freezes. That is, why is there water axpansion upon solidification
The pressure on a balloon holding 350 mL of an ideal gas is increased from 254 torr to 1.00 atm. What is the new volume of the balloon (in mL) at constant temperature?
Write a balanced net ionic equation for the neutralization of equal molar amounts of nitric acid and methyl amine (CH3NH2). Indicate whether the pH after neutralization is greater than, equal to, or less than 7.
a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating
Equilibrium can NOT be established when _____is/are placed in a 1.0L closed container: a. 0.25 mol SO2(g) & 0.25 mol O2(g), b. 0.75 mol SO2(g), c. 0.25 mol SO2(g) & 0.25 mol SO3(g), d. 0.50 mol O2(g) & 0.5 mol SO3(g), e. 1.0 mol SO3(g)
Write the chemical equation for the reaction of the basic ion with water to produce hydroxide ion. 1. NaC2H3O2 2. NaHCO3 3. Na2CO3 4. NH4Cl
For a protein w/ a molar mass of 1x10 6 u, calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C
if a 10.0 g sample of zns is treated with excess hcl what volume of hydrogen gas is evolved at stp?zn s 2 hcl aq -gt
Draw the organic product of the following reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide.
In an electrochemical cell, which of the following statements is FALSE? A. The cathode is the electrode where reduction occurs. B. The anode is electrode where oxidation occurs. C. A spontaneous electrochemical cell is called a galvanic cell. D. A..
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