A small cube of iron is observed under a microscope. The atomic mass of iron is 55.845 u. The density of iron is 7.86 g/cm³. Find (a) The mass of the cube (b) The number of iron atoms in the cube
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- A study fonds that the metabolic rate of mamals is proportional to the mass of the mamal carried to the exponent of (3/4). By what factor does the metabolic rate of a 70.0 kg human exceed that of a 6.30 kg cat?\ 70.0 3/4 kg = 6.09 6.303/4 kg I set up the values as a ratio and came up with 6.09. OK, I answered my own question. That is the correct answer.What is the density of vibranium with a mass of 186.000 ± 0.004 g and a volume of 120.00 ± 0.02 mL? (answer using 6 significant digits) What is the absolute uncertainty of the density of vibranium with a mass of 186.000 ± 0.004 g and a volume of 120.00 ± 0.02 mL?(answer with two significant digits)Atomic Mass Units and e/u The atomic mass of an isotope is its mass in atomic mass units, where 1 u = 1.661 x 10-27 kg. The ratio of the fundamental charge, e, to the atomic mass unit, u, is e/u = 9.65 x 107 C/kg. 1. Using Atomic Mass Units (a) What is the mass of an isotope with an atomic mass of 19.2 u? m = 31.89e-27 kg (b) What is the charge-to-mass ratio of a +2Li-6 ion, which has an atomic mass of 6.015? 오 = 2.4e6 X C/kg m
- both plsThe walls in a room are 2.82 m tall by 8.09 m long by 3.28 m wide. Assume 1.00 liter of paint covers 10.0 m2. How many liters of paint does it take (exactly - not rounded to nearest gallon) to paint the four walls of this room but not the ceiling and not the floor?What was the error in the following measurements? Mass (kg) Volume(m^3) Density (kg/m^3) 1.16 0.001 1160 2.46 0.0023 1069.565217 5.16 0.005 1032 10.16 0.01 1016 13.66 0.0135 1011.851852 There was no error in measurement There was a random error in the measurement of volume. The mass was measured with a systematic error Human error