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Five mL of a 10-to-1 dilution of a sample were added to 5 mL of Bradford reagent. The absorbance at 595 nm was 0.78 and, according to a standard curve, corresponds to 0.015 mg of protein on the x-axis. What is the protein concentration of the original solution?
Estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn
What is the kinetic energy of the emitted electrons whencesium is exposed to UV rays of frequency 1.5x10 15 Hz?
How many micrograms of fluoride are present in 2.0 g of a solution that has a fluoride concentration
how much heat is released when 75.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol
What is the ee?, The optical rotation of a compound is -165. What is the ee for a solution mixture with a measured rotation of -50?
The "Zebra" cell was invented in 1985 in South Africa as part of the "ZEolite Battery Research Africa" project, and is used in all-electric municipal buses and other vehicles.
Consider the following gas-phase equalibrium reaction: N2(g)+O2(g) 2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?
An experiment requires 40.0 of ethylene glycol, a liquid whose density is 1.114 . Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K.
Potassium and oxygen gas react to form potassium oxide. b. Sodium and water react to form sodium hydroxide and hydrogen gas. c. Iron and oxygen gas react to form iron (III) oxide.
it changes the complex to the cis isomer. Any idea as to why
what is the net ionic equation potassium hydroxide and iron(III) nitrate.
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