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Make sure that you are showing your work while performing the computations needed to respond to these questions.
Sub-Atomic Particles: What is the mass in grams of 3.5 mol of the element gold, Au?
Gram/Mole Conversions: How many moles of magnesium, Mg, are there in 4.75 grams of magnesium?
Conversions with Avogadro's Number: How many moles of mercury, Hg, are in 1.30 x 107 atoms of mercury?
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm . What is the radius of a gallium atom
Bromine can form compounds or ions with any number of fluorine atoms from one to five. Write the formulas of all five of these species
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 73.0 °C and 1029 mmHg. what temperature does the CCl4 first start to condense
What is the major product when p-fluoroanisole reacts with sulfur trioxide and sulfuric acid. If applicable, minimize formal charges via expanded octets.
a 35.00 ml sample of naoh solution is titrated to an endpoint of 14.76 ml 0.4122 m hbr solution. what is the molarity
Is it essential to know the exact volume of water utilized to dissolve the KHP when setting up the titration. Why or why not.
An electron is confined to a one-dimensional box of length L. It falls from the second energy level to the ground state, and releases a photon with a wavelength of 322 nm. What is the length of the box?
how many grams of lithium hydroxide are required to completely react 10.8 moles of selenous acid. write the
if a container of nitrogen, oxygen, carbon dioxide has a pressure of 2.00atm and the partial pressure of O2 is 312torr,
a student used a dcp solution standardized to 9.94x10-4m to analyze a sample of extract from 3.50g of solid food. the
A beaker has a mass of 85.6 g when empty and 110 g when it contains 38.7 mL of pentane. What is the density of pentane
What is the final temperature in a squeezed cold pack that contains 50.0g of NH4NO3 dissolved in 125 mL of water? Assume a specific heat of 4.18 for the solution, an initial temperature of 27.0 C, and no heat transfer between the cold pack and the..
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