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A 99.11 g sample of a highly radioactive element is determined to contain 0.4271 mol of the element. What is the element?
A volume of water was delivered using a buret and experimentally determined to have a mass of 2.00-g. What was the final volume of water on the buret if the inital was 0.44-mL? [assume the density of water is 1.00g/mL]
What is the lead (II) ion concentration in a solution prepared by mixing 397 mL of 0.416 M lead (II) nitrate with 457 mL of 0.284 M sodium fluoride? The Ksp of lead (II) fluoride is 3.6 × 10-8
Give the structure of the products that you would expect from the reaction of 1-butyne with each of the following: a) 1 mol equivalent of BR2 b) 1 mole equivalent of HBr c) H2 in excess/Pt, then 3 mol equivalent of NaNH2 and then CH3I d) NaNH2 the..
Barium chloride + sodium carbonate --> a) balanced formula equation b) complete ionic equation c) net ionic equation
What is the work exchanged between the system(gas) and its surroundings. What is the change in internal energy of the gas. What is the change in enthalpy of the gas
If one started will 6.73 g of copper chloride, how many grams of copper could be produced?
Which set of atoms is correctly arranged in order of increasing electronegativity (lowest electronegative atom listed first)
Draw the mechanism that illustrates the conversion of 2-chloro-2-methylbutane to 2-methyl-2-butanol with water (H2O) as the nucleophile.
Draw the structural formula(s) for the branched constitutional isomer(s) with the molecular formula C7H16 that do not have a methyl
When relatively small amounts of magnesium burns, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water?
How do you know whether it is talking about the concentration of the OH in MgOH2 or NH3, cuz they give different answers and apparently they are using NH3 not mgoh2
If the specific heat of the ball bearing is .474 J/g times degress C, calculate the final temperature of the water. Assume the calorimeter to have neglible heat capacity.
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