A calculator is found to have a mass of 118 grams. Using unit analysis, show what the mass of this calculator is in pounds. Use one of the following to set up the conversion factor.
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A calculator is found to have a mass of 118 grams.
Using unit analysis, show what the mass of this calculator is in pounds.
Use one of the following to set up the conversion factor.
454 g = 1 lb = 16 oz
1 m = 39.4 in = 3.28 feet
2.54 cm = 1 in
1 km = 0.621 mile
1L = 1.06 qt
3.79 L = 1 gal
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118 grams x
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- A student decided to undertake a balance calibration exercise during a lab session involving burette calibration. He found the apparent weight of calcium carbonate in air to be 100 grams and density to be 1.33g/mL. Assume that the standard steel weight used in the calibration has a density of 8.0g/mL and air has a density of 0.0012g/mL. What would be the true mass of the calcium carbonate sample?A volume of 25.00 mL of the original solution was diluted to a total volume of 100.0 mL and then 10.00 mL of that diluted solution was diluted to a total volume of 15.00 mL to make the sample for analysis. If a student in lab found that the solution for spectroscopic analysis had a concentration of (4.0x10^-5) M, what was the concentration of the original solution, in units of M?Why should the selected rule(s) be followed? A residue left on the balance will contaminate the balance pan surface and anything that comes into contact with it afterwards. There may be discrepancies in accuracy between individual balances. Objects at any temperature other than room temperature can create air currents which can affect the balance pan, causing the measured mass to be higher or lower than the true mass. Weighing wet items will cause the displayed mass to be greater than the actual mass of the object.
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