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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?
Describe the role of biotin in the gluconeogenic pathway. What effect would biotin deficiency have on a person, and how might you overcome or avoid that effect?
Problem- A .1 M NaC2H3O2 solution gave a 7.77 pH meter reading. Use the concentration and pH reading to approximate the Ka for acetic acid. Show calculations.
Write reactions that describes the dissolution of solid zinc hydroxide with aqueous ammonia, and determine the numerical value of the equilibrium constant for the reaction
A 100.-L flask contains a mixture of methane (CH4) and argon gases at 25 degrees Celsius. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. Calculate the total kinetic energy of the gaseous mixture.
what is the minimum amount of NaCl needed to get the 18.2 degrees? Its a molality equation
A balloon has a volume of 1.20 liters at 24.0 C. The balloon is heated to 48.0 C. Compute the new volume of the balloon.
A sample of chemical X is found to contain 5.0 grams of oxygen 10.0 grams of carbon, and 20.0 grams of nitrogen. The law of definite proportion would predict that a 78 gram sample of chemical X must contain how many grams of carbon
How many liters of flouridated drinking water would a 70 kg person have to consume in one day to reach this toxic level? How many kg of sodium flouride would be needed to treat a 7.49x 10^6 -gal reservior?
a solid consists of a mixture of nano3 and mgno32. when 6.50 g of the solid is dissolved in 50.0 g of water the
Consider a solution that contains 73.0% R isomer and 27.0% S isomer. If the observed specific rotation of the mixture is -87.0°, what is the specific rotation of the pure R isomer
calculate the total length obtained when you add 12.3cm, 2.75dm, and 0.450m. give the answer in centimeters
Draw products A and B of the following series of reactions. Use either condensed or line structures. Assume there is enough of each reagent to completely react the relevant functional groups.
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