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How are DNA oligonucleotides chemically synthesized?
What kind of structure is an example for the description of a DNA oligonucleotide?
A rolaids tablet contains calcium carbonate, which neutralizes stomach acid. If a rolaids tablet neutralizes 42.15 mL of 0.320 M hydrochloric acid, how many milligrams of calcium carbonate are in a rolaids tablet. CaCO3(s) + 2HCI(aq) -(arrow right)..
a standard solution of sodium hydroxide has a molar concentration of 0.128m. you use 25.00ml of a solution of
The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
When solutions containing silver and chloride ions are mixed, silver chloride precipitates: Ag+ (aq) plus Cl- (aq) ---> AgCl(s)
an unknown compound has the empirical formula ch2. a 0.050-mol sample of this compound weighs 4.20 g. what is the
One is a metalloid; the other is a metal. Both form oxides of the formula RO2. the first is acidic; the next is amphoteric. Identify the two elements and explain your reasoning.
Problem- In TLC which bands correspond to which compounds in the crude spinach extract, discuss how the measured data supports conclusions, and discuss the purity of the bands?
What volume of O2 at 684 mmHg and 21 degree celsius is required to synthesize 25.0 mole of NO?
A particular natural gas consists, in mole percents, of 83.0% CH4 (methane), 11.2% C2H6 (ethane), and 5.80% C3H8 (propane). A 385-L sample of this gas, measured at 21C and 739 mmHg, is burned in an excess of oxygen gas.
Showing only Valence electrons, write an equation for the reaction that occurs between sodium, Na
At equilibrium,beaker a lost 7.0g. Define what will happen for the system to be equilibrium as well as compute the molar mass of the unknown and state any assumption
Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation
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