Your calculated density of aluminum is d = 2.69 g/cm3. aluminum’s accepted density is 2.70 g/cm3. without writing the "%" sign, calculate the percent error up to two decimal places: your calculated density of aluminum is d = 2.69 g/cm3. aluminum’s accepted density is 2.70 g/cm3. without writing the "%" sign, calculate the percent error up to two decimal places:

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.