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Question- The length of a piece of rope was reported to be 75.2 m. According to significant figure conventions, what is the uncertainty in this value (+/- how many meters)?
I don't know how to reach these answers thus please show the steps, thank you!
The few gas analysis shows as carbon dioxide 14%, carbon monoxide 0.4%, oxygen 5.6% and nitrogen 80%. The air used has a dew point of 50°F. The barometer shows 29.9 inches of mercury. Calculate the dew point of the stack gas.
Suppose your thermometer read consistently 1.0 o C lowered throughout both parts in the colligative properties lab. What effect would that have on your experimental value for the molar mass of your unknown solute?
Calculate the minimum concentration of mg 2+ that must be added to .10 M NaF in order to initiate a precipitate of magnesium flouride. ( Ksp for MgF2= 6.9 x 10-9)
(b) calculate the moles of each gas before the reaction (c) determine the limiting reactant (d) calculate the moles of ammonia produced (e) calculate the partial pressures of all species in the system (f) the total pressure in the system
use a sketch to show the change that occurs as a sulfur atombecomes a sulfide ion. describe how the distance from the
what is the ratio of the rate of reaction A to reaction B ? B) if the initial concentrations of the reactants are both 1.80 M, what is the ratio of the rate of reaction A to reaction B ?
The initial concentration of a reactant in a first order reaction is 0.620 molar. What will be its concentration after 3 half-lives
A cereal product containing 55% water is made at the rate of 500 kg/hr. You need to dry the product so that it contains only 30% water. How much water has to be evaporated per hour
How many grams of aluminum metal and how many liters of chlorine gas can be produced by passage of 4.8 amp of current for 2.3 hours under standard conditions
Problem- For the dissolving of ammonium nitrate in water, change in H = 25.7 kj/mol and change in S= 108.7 J/mol k. Calculate change in G and Ksp for the process at 25 degrees Celsius.
Find the Anode Half-Reaction, Cathode Half-Reaction and Volts, Lit. of the following cells Ag-Cd, Ag-Cu, Ag-Pb, Ag-Zn, Cd-Cu, Cd-Pb, Cd-Zn, Cu-Pb, Cu-Zn and Pb-Zn
Draw structures corresponding to each of the given names. Draw: 2-fluoro-3-methylpentane, 3-cyclobutylpentane
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