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Which of the following changes in a DNA molecule may have no effect on the protein for which the DNA codes
a. a deletion mutationb. formation of a thymine dimerc. changing the first base in a tripletd. changing the second base in a triplete. changing the third base in a triplet
reacted with 0.0040 mol NaOH (very strong base) and then brought up to a volume of 1.0 liter with water. What is the pH of the resulting solution?
An acid solution is 0.100 M in HCl and 0.190 M in H2SO4.What volume of a 0.150 M KOH solution would have to be added to 550.0 mL of the acidic solution to neutralize completely all of the acid?
Nitrogen gas may react with hydrogen gas to form hydrazine gas, N2H4, according to the reaction N2 + 2 H2 ---> N2H4. 10 L of N and 25 L H react to completion (the limiting reagent is converted entirely to hydrazine).
Explain how a competitive inhibitor inhibits an enzyme and how the effect is different from that of an irreversible inhibitor.
sulfate pentahydrate are made into a solution with 512.441 g of water. What is the molality of the copper sulfate solution?
Dehydration of two alcohols leads to preparation of methylcyclohexene. write chemical equations for both reactions.
Assuming that equilibrium has been reached, calculate Kc and Kp for the reaction.
RNAse is an enzyme that cleaves the P-O5\' bond in RNA. It has two His residues in the active site. Suggest a plausible explanation
The standard enthalpy of formation of SiH4(g) is +34.3 kJ. The standard enthalpy of formation reaction is below. Si(s) + 2 H2(g) SiH4(g) What is the enthalpy change for the following reaction?
The following heats of formation are used to find the change in enthalpy for the formation of tin chloride in the following reaction Sn (s) + 2Cl2(g) --> SnCl4(l).
Capsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3. (a) Calculate its molar mass.
Both stopcocks are opened. The pressure throughout the system is 33.5 mmHg. How many moles of N2 are in the system? How many moles of CO2 are in the system?
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