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A least-squares curve fit of the data in the table to the right led to a best straight line with the equation y = 0.615x 1.35. X=1,2,3,4,6 Y=2,3,4,5 (a) If the y value of a new measurement is 3.75, what are the corresponding x value and the uncertainty in the x value? [The uncertainty in y (sy) is 0.196.] x value =? uncertainty =? (b) Suppose y was measured five times and average of these five measurements was 3.75. What is the uncertainty in x based on these five measurements?
Compare the volume of 1.0 g of bromine, Br2, as a solid, liquid, and gas. The density of solid bromine just below the melting point of -7°C is 3.2 g/mL, of liquid bromine at 25°C is 3.1 g/mL.
A solution is made by dissolving 0.0350 mol of HF in enough water to make 1.00L of solution. At 24°C, the osmotic pressure of the solution is .975 atm.
What are some ways to induce recrystallization (Name 3), if your solute refuses to recrystallize after performing the required 7 steps? the seven-step recrystallization procedure
4 KO2 + 2 H2O + 4 CO2 4 KHCO3 + 3 O2 1.86 moles of O2 were produced.Now, How many molecules of O2 does this number of moles represent.
N2H4+3O2----2NO2+2H2O The limiting reagent is O2 how many kg of NO2 are produced from the reaction of 75kg of the limiting reagent.
Methyl alcohol (CH3OH) is made by reacting carbon monoxide with H2. Starting with 2.5 g of H2 and 30 L of CO, what mass of methyl alcohol could be produced at STP? which is the limiting reactant?
calculate the expected change in temperature for 4.5 g of NH4NO3 dissolved in 100.0 mL of H20. Assume that the calorimeter absorbs no heat. (ie. Ccal=0)
The density of 70.4 wt% aqueous nitric acid, HNO3, is 1.41 g/ml. 1. How many grams of solution are in 1.500 L?
If 7.85 x 10 to the 24th power Sc atoms react with excess CaO, how many grams of each product will form? You will need to determine the equation of the reaction.
Calculate the freezing point depression constant (Kf) of phenol ? c)If 24.5899g of unknown was added to 838.72g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
Which of the following is an INCORRECT description of benzene? Which of the following criteria is NOT used to determine if a molecule is aromatic?
I need help describing an experiment where one could measure the value of the extinction coefficient of a solution with a concentration (c mol/L) of chlorophyll in water for a given wavelength.
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