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If an astronaut on the Moon dropped a hammer, would there be sound? Explain. (Follow-up: How do astronauts communicate with each other and with mission control?)
What formula is used to find the work needed to compress water from atmospheric pressure to a higher pressure (with ambient Temperature)? I know about w = integral (-PdV), but V is constant. What is this formula in terms of delta-P
estimate the effective nuclear charge for an n1 n2 n3 electron in sulfur. show
at 500degc and 93.2 kpa the mass density of sulfur vapour is 3.710 kg m-3. what is the molecular formula of sulfur
If a wheelchair-marathon racer moving at 13.3 miles per hour expends energy at a rate of 635 Calories per hour, how much energy in Calories would be required to complete a marathon race (26.2 miles) at this pace
a solid circular rod that is 800 mm long with a radius of 15mm is subjected to an axial force of p80kn. the elongation
If 115 of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m. ?
At 25?°C, the vapor pressure of diethyl ether is higher than the vapor pressure of its isomer n-butanol, because A. diethyl ether has a higher density than n-butanol.
Without first writing a full molecular or ionic equation, write the net ionic equations for any precipitation reactions that occur when aqueous solutions of the following compounds are mixed.
from the equation C2H5OH + 3O2 --> 2CO2 + 3H2O, how many mols of ethanol are needed to use up 3.24 mols of oxygen?
Provide structures of the two allylic free radical intermediates in this reaction. b. Provide structures of the two substitution products in this reaction. c. Identify and circle the major product in (b) above.
A sample of nitrogen has a volume of 605 mL at a pressure of 84.77 kPa. Assuming that the temperature is constant, at what pressure will the gas has a volume of 0.766 L
use maxwell distribution of speeds to estimate the fraction of CO2 molecules at 300K that have speeds in the range 200 to 250 m/s.
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