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Calculate the percent error in the experiment using the experimental mass of CuO and the theoretical mass of CuO. The percent error is defined as follows.?
This is in Short AnswerDecomposition of Malachite %error= experimental value-theoretical value/theoretical value X100
My notes for the lab are: We placed an empty crucible onto the balance and recorded it's mass to be 88.000g.
We then removed the crucible and added 10g of copper (ll) carbonate hydroxide and placed it back on the balance to recorde the new mass to be 98.000g.
We then took a Bunsen burner and put the crucible containing the 10g of copper (ll) carbonate hydroxide on top at low heat.
The color before heating was bright green. The color after heating on low heat was black.
The mass of the crucible after heating under the Bunsen burner was 95.195g
A J tube is filled with air at 22C and 760 Torr. The long arm is closed off at the top and is 100 cm long. The short arm is 40 cm. Mercury is poured into the short arm with a funnel. What is the pressure on the air when Hg starts to spill out.
If a molecule having an ionization energy of 10.51 eV produces a photoelectron having a kinetic energy of 7.01676E-19 J, what is the wavelength of the incident radiation?
A 125 g aluminum block at an initial temperature of 95°C is dropped into a styrofoam flask containing 150 mL of water at 20°C. What is the final temperature?
For each of the following pairs of substances, determine which has the larger molar entropy at 298 K: [ (A) Cl2(g) or (B) Br2(l) ] [ (C) Fe(s) or (D) Ni(s) ] [ (E) C2H4(g) or (F) C2H6(g) ] [ (G) CCl4(g) or (H) CH4(g) ] [ (I) MgO(s) or (J) HgO(s) ]..
The active ingredient in Philips Milk of Magnesia is Mg(OH)2, in Amphojel is Al(OH)3; and in Aka-Seltzer is NaHCO3. Write balanced net ionic equations showing how each neutralizes stomach acid. (You can answer this question because it is a review of ..
Calculate the rms (average) speed of NF3 atoms or molecules at 202 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant.
If a patient requires 100.0 mg of Ceclor PO every 6.00 hours. Ceclor is accessible in 125 mg/5mL concentration. Explain how many milliliters should be used for one day
Sulfurous acid, H2SO3 has acid dissociation constatns Ka1= 1.5*10^-2 and Ka2= 6.3*10^-8. What is the pH after 10.00 mL of 0.1000 M NaOH is added to 10.00 mL of 0.1000 M H2SO3
State the mass balance and charge balance equations for a solution that is .45 M in NaF as well as saturated with CaF2
The burning of 2.051g glucose, C6H12O6, in a bomb calorimeter causes the temperature of the water to increase from 24.92 to 31.41 degrees Celsius. The bomb calorimater has heat capacity of 4.912 kJ/degree Celsius.
Problem- Glucokinase has a higher Km than hexokinase. Which of the following accurately describes the activity of glucokinase with respect to the enzymes Km
How many liters of O2 gas measured at 861 torr and 250.0°C are formed by the decomposition of 200. g of KClO. (You will need a balanced equation where KClO is the reactant. The other product is KCl.)
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