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The edge length of the unit cell of Ta, is 330.6 pm; the unit cell is body-centered cubic. Tantalum has a density of 16.69 g/cm3. Calculate the mass of a tantalum atom.
Problem- A solution is prepared by mixing 500mL of 0.10M NaOCl and 500mL of 0.20M HOCl. What is the pH of the solution. [Ka(HOCl) = 3.2E-8]
An unknown metal reacts with oxygen to give the metal oxide, MO2. Identify the metal based on the following information: Mass of Metal: 0.356g
Ten milliliters of this solution is after that diluted to 250mL. The absorbance of the solution is 0.241 in a 1cm cell. Explain what is the percentage of vitamin C in the tablet. The molar absorptivity is 7415.
given the concentration of either hydrogen ion or hydroxide ion use the ion product constant of water to calculate the
Which ground-state atom has an electron configuration described by the following orbital diagram? A antimony B germanium C indium D lead E tin
How many grams of NaOH would you need to prepare 500mL of a 1M solution (assume 100% purity of the base)? M= (# of moles / L of solvent)
Problem- Predict the ground-state electron configuration of the following ions. Write your answers in abbreviated form, that is, beginning with a noble gas in brackets.
a 20 year old male was brought to paramedics after ingesting 100mL of pure ethylene glycol which is a lethal dose. The hospital pharmacy is out of ehtanol so they use a bottle of 100-proof whiskey in your medical bag.
Radio waves travel at the speed =3.00 108 m/s(speed of light,). if Saturn is 7.9 108 km from Earth then Determine how many minutes does it take for a radio message to reach Earth from Saturn?
Explain the volume of a gas is 6.10 L measured at 1.00 atm. Define what is the pressure of the gas in mmHg if the volume is changed to 9.59 L. The temperature remains constant.
Equilibrium can NOT be established when _____is/are placed in a 1.0L closed container: a. 0.25 mol SO2(g) & 0.25 mol O2(g), b. 0.75 mol SO2(g), c. 0.25 mol SO2(g) & 0.25 mol SO3(g), d. 0.50 mol O2(g) & 0.5 mol SO3(g), e. 1.0 mol SO3(g)
3.5 g of a hydrocarbon fuel is burned in a vessel that contains 250. grams of water initially at 25.00 C. After the combustion,the temperature of the water is 26.55 C.
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