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When elements in the d-block are ionized, the electrons enter the nd orbitals before they enter the (n+1)s orbitals. Explain why this is so.
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Suppose 1.7 g of zinc is treated with 6.2 g of pure hydrogen chloride. What is the maximum mass (in g) of hydrogen gas that can be produced?
How many grams of H2SO4 must be dissolved into 0.709 L of solution to generate a concentration of 0.303 M?
How much will the temperature change when 3.0 g of tooth enamel (specific heat = 0.18 cal/g C) absorbs 0.80 cal of heat energy?
What roman numeral is required in the name of the following compound? Ag2SO4 What roman numeral is required in the name of the following compound? CuCO3 What roman numeral is required in the name of the following compoun ...
A 0.0500-mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 × 10 2 g H 2 O. If the molar mass of this nutrient substance is 114 g/mol, what is the fuel value (in nutritional Cal) if the t ...
A hydrogen atom emits a photon as its electron changes from n = 5 to n = 2. For the H atom, E n = -2.18E-18*(1/n 2 ) J. What is the wavelength (in m) of the photon? ( ) m The number of significant digits is set to 3; t ...
Q1: In your gravimatric analysis experiment, you weigh the precipitate of AgCl in a filtering crucible. You have to weight your filtering crucible first (three weighing measurement), then do the filtration. After drying ...
Please attach sources.websites used if any. Thanks! Determine the mass of chlorine in the original sample (39.096g) as the difference in mass between the anhydrous sample (38.585g) and the mass of copper. From the mass o ...
The mass of a sample of CaCO3 is 751 grams How many total atoms are present in this sample?
A sample of gas in a cylinder has an initial volume of 56.0 L , and you have determined that it contains1.60 moles of gas. The next day you notice that some of the gas hasleaked out. The pressure and temperature remain t ...
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