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Classify these 3 elements by whether they get oxidized or reduced in the reactions shown here: Calcium Oxygen Flourine Lithium 2Ca (s) + O2 (g)= 2CaO (s) F2 (g)+2Li (s) = 2LiF (s)
What is the concentration of Cu2+ in the following cell at 25 degrees C if the cell voltage is 0.955V?
Out of what will you construct your calorimeters? please answers have to be related to chemistry and specifically to this experiment.
Substituents on an aromatic ring can have several effects on electrophilic aromatic substitution reactions. Substituents can activate or deactivate the ring to substitution
A buffer was prepared by adding 2.4 g of ammonium nitrate to 100.0 mL of 0.30 M ammonia (Kb = 1.8 × 10-5). To this solution was then added 10.0 mL of 0.30 M sodium hydroxide
If 420 Joules are added to 20 grams of water to 30oC, what will be the final temperature of the water?
The rate constant for the first-order conversion of A to B is 3.33hr-1. How much time will be required for the concentration of A to reach 75% of its original value?
What is the velocity (m/s) of a doubly protonated ion with a m/z ration of 324.9, which has been accelerated to a kinetic energy of 0.75 MeV?
A mixture of CS2 (g) and excess O2 (g) is placed in a 10.0 L reaction vessel at 100.0 degrees C and the pressure of 3.00 atm, A spark causes the CS2 to ignite, burning it completely, according to the equation:
What is the molecular weigh of acetic acid that will form 2 moles of CO2 assuming complete combustion.
At what temperature will He atoms have the same Crms value as N2 molecules at 25 degrees Celsius. Solve this problem without calculating the value of Crms for N2. Crms is the root mean square speed.
The specific heat of silver is .24 j/g. How many joules of energy are need to warm 4.37g from 25 to 27.5 ?
If a 220 mg piece of gold (density =19.32 {rm g}/{rm cm}^{3}) is hammered into a sheet measuring 2.5times1.0 {rm ft}, what is the average thickness of the sheet in meters?
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