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What is Bernoulli's principle? Is pressure greater or less in regions where streamlines are crowded? What happens to the internal pressure in a fluid flowing in a horizontal pipe when its speed increases? Does Bernoulli's principle refer to changes in the internal pressure of a fluid or to pressures the fluid may exert on objects? How does faster-moving water between two ships affect the water pressure against the sides of the ships?
Dry air (0% humidity) is approximately 78% N2, 21% O2, and 1% Ar by moles. Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures in your answers.
Problem- The half life of iodine 131, also called radio iodine is 8.02 days. How much iodine-131 will remain after two half lives in a sample that initially contains 5.0g of the nuclei de. Please give detailed explanation.
For a solution having 1.00 x 10^-3 equivalents/L total alkalinity (contributions from HCO3-, CO32- and OH-) at [H+] = 4.69 x 10^-11, what is the percentage contribution to alkalinity from CO32-
identify the compounds that act as acids in the following equilibriumnh4 aq cn- aq nh3 aq hcn
what are the special characters of hollow tube, herring bone and bambo like carbon nano tubes in chemistry?
Give the formula for an ionic compound formed from the following pairs of ions. Tip: Use the Xy button to subscript the numbers.
For a certain reaction, the frequency factor A is 3.1 × 109 s-1 and the activation energy is 25.0 kJ/mol. What is the rate constant for the reaction at 89°C.
A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 14.55 % naphthalene by mass. Calculate the vapor pressure at 25 °C of hexane above the solution. The vapor pressure of pure hexane at 25 °C is 151 torr.
the water level in a graduated cylinder initially at 221 rises to 271 after a piece of lead is submerged. what is the
Calculate the molecular weight of a small protein if a 0.40-g sample dissolved in 101mL of water has an osmotic pressure of 9.3 mmHg at 28degC.
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
according to the law of conservation of mass if the products of a reaction have a mass of 64.0 grams then the total
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