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Which statement is correct about transition metals? A. They have incompletely filled d subshells. B. They form paramagnetic compounds. C. They form ions with incompletely filled d subshells. D. They have catalytic activity. E. All of the answers are correct.
What volume of oxygen is needed to react with solid sulfur to form 6.20 L of sulfur dioxide?
Container A (with porous walls) is filled with air at STP. It is then inserted into a large enclosed container (B) which is then flushed with H2(g). What will happen to the pressure inside container A?
Calculate the work done in kJ when 3.2 moles of H2O vaporizes at 1.00 atm and 38.8 oC. Assume the volume of liquid H2O is negligible compared to that of vapour.
an adult person radiates heat to the surroundings at about the same time as a 100-watt lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hrs?
A 635 mL sample of unknown solution reacts completely with to form 19.1g CO2 . What was the concentration of the solution?
m is a metal x is a non-metal. upon strong heating of 0.5000g of mxo3s it decomposes forming mos and xo2g. then all of
Decide if the compound/ion listed can satisfy the octet rule (duet rule for H), if so choose Satisfies Octet Rule from the drop down menu. If the compound/ion cannot satisfy the octet rule for one of the atoms in the formula, choose one of the fol..
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
A 125.0g sample of copper is initially at 25.0oC. It absorbs 12.50 kJ heat from its surroundings. What is the final temperature to the nearest tenth degree? Specific heat copper = 0.3874 J/goC.
a tank contains a mixture of 3.6 mol of n2 2.7 mol of o2 and 1.8 mol of co2 at 25degc and a total pressure of 10.0 atm.
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL
25.00 mL of 0.0200 M MnCl2 is titrated with 0.0250 M Na2H2Y. Both solutions are buffered to pH 8.20. Determine pMn after the addition of the following volumes (mL) of the Na2H2Y.
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