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An enzyme catalyzed reaction is carried out in a 50mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 00002 mole of H+ were produced. Explain what is the ratio of TRIS base to TRIS acid at the start of the experiment?
Explain what is the ratio at the end of the experiment?Explain what is the final pH?
dissolving 3.00 g of an impure sample of CaCo3 in an excess of HCl produced 0.656 L of CO2 (measured at 20 C and 792 torr) . Calculate the percent by mass of CaCO3 in the sample
A certain compound is made up of three chlorine atoms, one phosphorus atom, and one oxygen atom. What is the chemical formula of this compound
All of the common noble gases are mono atomic and low boiling. Their boiling points in °C are: Ne,-245: Ar,-186;Kr,-152: and Xe, -107. Using the periodic relationship between the noble gases, predict the boiling point of Radon.
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20 ? C and 9.95 × 10 4 Pa.
What is the rate law for step 2 of this reaction? Express your answer in standard MasteringChemistry notation. For example, if the rate law is type k*[A]*[C]^3.
you are a manufacturer of antacids. you could use either mg (oh)2 or al(oh)3 in your formulation. you can buy either of these for $2.00 per pound.
an unknown rectangular substance measures 3.6 cm high 4.21 cm long and 1.17 cm wide. if the mass is 21.3g what is this
A patient needs 2.70×10^-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
a helium-filled weather balloon has a volume of 815 l at 22 oc and 752 mmhg. it is released and rises to an altitude of
Draw the electron dot formula for each of the following molecules or ions: a) H2O; b) CCl4; c) H3O^+; d) SiF4; e) CF2Cl2; f) C2H6 HH
How would a decrease in the volume of a gas initially heldat STP affect. The Kinetic energy of the gas if T is constant, the average speed of the gas and the total number of collision with the walls of the vessel
How many grams of sodium lactate must be added to a 1.00 L solution of 0.400 M lactic acid to make a buffer with a pH of 3.70
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