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"Nanotechnology and Rare Earth Elements" Please respond to the following:
Carbon-14 has a half-life of 5730 years. A sample of carbon with a mass of 0.120 g has an activity of 40 decays/hr. The initial specific activity is assumed to have been 900 decays/hr/gram.
alpha-titanium alloy to process into a turbine blade. Based on the fact that the alloy has an HCP crystal structure, what general processing technique
1.52g of an oxide of nitrogen contains 0.56 g of oxygen. determine the empirical formula of the compound.?
How many moles (mol) are in 6.3 ml of a 0.25 M solution of NaOH. your answer must include units
Problem- What is the nickel ion concentration in a solution prepared by mixing 385 mL of 0.432 M nickel nitrate with 413 mL of 0.396 M sodium hydroxide. The Ksp of nickel hydroxide is 1 × 10-16
If 2.00 moles of acetylene react completely with sufficient oxygen, how many grams of carbon dioxide are produced?
a 450.0 mL sample of a 0.273 M solution of silver nitrate is mixed with 400.0 mL of 0.200 M calcium chloride. what is the mass of the solid produced
A rich investor has come to you for advice. She has been come up by a biochemist who seeks financial backing for a company that would market dinitropenol and dicumarol as weight-loss medications. The biochemist has defined to her that these agents..
The bonding in BF3 requires formation of hybrid orbitals on boron. If the molecule is oriented in the xy plane, what is the identity of the unfilled p orbital on boron.
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 700 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 6.00?
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
C2H6, is completely combusted in oxygen. If the total mass of CO2 produced is 34.8 grams, what was the approximate mass of the methane in the original mixture?
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