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Problem- A portable CD player that draws 115 milliamperes of current is powered by Ni-Cd rechargeable batteries. Compute the mass of NiO2 consumed when a disk is played for 40 minutes. (Enter your answer in grams).
Please illustrate work and walk me during the problem so that I can follow and understand it. Please comprise units as well
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S. H2SO4 is a stronger acid than H2SeO4 because S is more electro..
Compare and contrast temperature and heat.When bonds or attractions are formed is the energy change given a negative or positive sign? Explain.
A compound containing selenium also fluorine is decomposed in the laboratory and produces 2.231 g of selenium also 3.221 g of fluorine. Determine the empirical formula of the compound.
could the separation in this experiment have been done in a different order? for example if mixture were first
In aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases other. H3PO4, HF, LiOH,
Explain the meanings of Vmax and Km. How do you get them from a graph of v vs. [S]. Draw a generic example and label appropriately. What are the differences between a competitive and non-competitive inhibition
When 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, the freezing point of the solution is 4.53 °C. What is the molar mass of the substance
After mixing 2.00g of H2S with 2.00g of NaOH, a 92.0% yield of sodium sulfide is obtained. Calculate the experimental yield in grams obtained in that reaction.
Write a balance equation for the reaction of nitric acid (HNO3) with each base solution : [1]. NaHCO3, [2]. MgCO3. ( Please include the phases of the substance)
What is the freezing point (C) of a solution prepared by dissolving 15.3 g of Ca(NO3)2 (formula weight=164 g/mol) in 115 g of water? The molal freezing point depression constant for water is 1.86 C/m.
Glycophorin A is a 131 residue integral membrane protein that contains a single transmembrane alpha helix. If the lipid bilayer has a thickness of 30 A, calculate the number of residues of an alpha helix
Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms CaCl2(aq)+Mg3(PO4)2(aq)
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