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Question
Scientists at the National Institute for Standards and Technology (NIST) wrote the initials of their agency with 70 individual cobalt atoms (as shown below). Calculate the total mass of these letters in grams.
Propose an alternative method to produce carbon- or SiO2-based particles with Accessible Surface Areas in the range of 20-200 m2/gram, via size reduction, of common and/or inexpensive materials (coal, sand, biochar, waste streams, etc.).
Problem- When 2-butanol undergoes E1 dehydration, three alkenes are obtained. 1) Draw the structures for these alkenes.
The difference in pH units between two acidic solutions is three. How much more acidic is the stronger acid than the weaker acid
Chemical formulas point to the ratios of the different types of atoms in a compound. Percentage composition indicates the relative masses of each element in a compound. Mass ratios are important for lab work, while atomic ratios are important for ..
sample of a gas at 25.0 oC and at a pressure of 3 atm, what will the pressure be if the temperature is raised to 50.0 oC?
How many milliliters of 2.85 M HCl solution would be needed to react exactly with 40.0 ml of 3.50 M Mg(OH)2.
Place palmitic acid at the middle position. Cis/trans isometry is graded -it may help to draw hydrogen atoms associated with the carbon atoms of the double bond.
Demonstrate awareness of the structures, properties and reactions of common classes of organic compound and Describe how organic compounds can be separated
Sketch the plot of electrical conductivity anainst titre volume(A VS V) you would expect to observe when the strong acid HCl is titrated with the strong base NaOH. Explain the shape of the plot and clearly indicated the end point
the molality of a solution is the number of moles of the solute that is dissolved in 1000 g of solvent. using the
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 83% efficient and the ferric oxide is only 87.5% pure, what mass of ferric oxide is required to make 3 moles of iron
Write the appropriate nuclear equation for the following description. Iodine-131, has a half-life of 8 days. If you started with a 12.0-mg sample of I-131, how much would remain after 24 days
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