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Can someone answer these THREE questions?
1.) Jenny wants to determine if a new brand name washing detergent is better than her old detergent. She washes ten dirty t-shirts with the new washing detergent and ten dirty t-shirts with the old detergent. Identify the dependent and independent variables for this experiment.
2. ) Ronald wants to see if a new shower cleaner works better in removing soap scum than his old cleaner. He pumps 50 sprays on one half of the shower and pumps 50 sprays of his old cleaner on the other half. Identify the constant in this experiment.
3.) A solid is cooled to a very low temperature. Assuming the mass remains constant, how, if at all, does this affect the density of the solid?
Draw the structure of an alkane or cycloalkane that has more than three but fewer than ten carbon atoms, and only primary hydrogens.
CsCl crystallizes in a unit cell that contains the Cs+ ion at the center of a cube that has a Cl- at each corner. Each unit cell contains __________ Cs+ ions and __________ Cl-, ions, respectively.
Problem- What is the buffer range of a solution composed of equal molar concentration of phenol and sodium phenolate. (Ka = 1.3x10-10)
Calculate Delta mixG, Delta mixS, and Delta mixH for mixing 150.0 g of benzene with 200.0 g of toluene at 20 degree C and 1 atm.
Explain what mass of NCl must dissolve in 65 grams of water to lower the freezing point by 7.50 degrees Celsius? The freezing point depression constant, Kfp, for water is -1.86 degrees Celsius/m.
an ice cube of mass 8.5 is added to a cup of coffee whose temperature is 95 and which contains 130 of liquid. assume
A Buffer solution with a pH reading of 8.50 was prepared by mixing 0.25 mole acid(HA) and 0.05 mole NaOH in 500.0ml DI water.
Use the reactions below and their equilibrium constants to predict the equilibrium constant for the reaction, 2A(s) 3D(g).
A sample of AgBr(s) is added to a text tube containing 10 mL or 6.0 M NH3. Determine how many grams of AgBr(s) will dissolve.
The Ksp of Ca(OH)2 is 5.5x10^-5. What is the concentration of the OH^- (aq) when in a saturated solution of Ca(OH)2 (aq)
Examine the relationship between whistle blowing and ethics by examining both sides of the argument. Does it or does it not promote ethical standards?
A compound, C5H10O exhibits IR absorption at 1730 cm-1. Its carbon NMR shifts are given below. The number of hydrogen's at each carbon, resolute by DEPT, is given in parentheses subsequent to the chemical shift
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