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- How do you answer 1, 2, and 3? (This is a practice exercise).Mass of beaker and milk= 65.922 g Mass of beaker= 45.347 g Mass of milk (g)? pH of milk= 8 Isoelectric point= 5 Mass of watch glass and casein= 28.438 g Mass of watch glass= 27.832 g Mass of casein (g)? Percent casein in milk?Chemistry Please estimate the Km and Vmax and then calculate the kinetic constants (Km, Vmax, kcat, and kcat/Km) Please and thank you <3
- In a metered-dose inhaler (MDI), such as those used for asthma medication, medicine isdelivered by a compressed-gas propellant. (The device is similar in concept to a can of spraypaint.) When the inhaler is activated, a fixed amount of the medicine suspended in thepropellant is expelled from the mouthpiece and inhaled. In the past, chlorofluorocarbons(CFCs) were used as propellants; however, because of their reactivity with the Earth's ozonelayer, they have been replaced by hydrofluorocarbons (HFCs), which do not react withozone. Now HFC use is also being reduced due to their high global warming potential. In one brand of inhalers, the original CFC propellant was replaced by HFC 227ea (C3HF7,heptafluoropropane). The volume of the inhaler propellant reservoir is 1.00×102 mL, and thepropellant is charged into the reservoir to a gauge pressure of 4.443 atm at 23°C. An onlinesearch for properties of HFC 227ea yields the information that the critical temperature andpressure of the substance…A race car goes around a level, circular track with a diameter of 1.00 km at a constant speed of 85 km/h. What is the car's centripetal acceleration in m/s2? m/s2In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.(b) Find a 0.95 confidence interval for p.(c) As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified nonsmoker? What is the margin of error based on a 95% confidence interval?
- how do u know its 1,1,0?When using the LWQ method, a pharmacist needs to obtain 60 mg of a drug using a balance that has a MWQ of 120 mg. If the desired quantity of drug is to be contained in a mixture mass of 150 for the last step, what mass of diluent (in mg) is to be weighed by the pharmacist? Question is proper.A pool is treated with calcium hypochlorite pool shock. If Ca(OCl)subscript2 has 50% available chlorine by mass, what ppm chlorine increase will result from the addition of 5kg of pool shock to a 40x10raised to 3 L swimming pool? I think if I can understand this one I can apply the principles to other practice problems. Thanks so much!
- You are on the management team of a company that is considering purchasing a tanker truck. The truck you want has a volume of 26,000 liters and an empty mass/weight of 15,500 kg. However, the route you wish to travel has a bridge with a weight limit of 25 tons. If you purchase the truck and fill it to capacity with a liquid whose density is 0.80kg/L, what will the mass of the truck be?Gyuri performed an analysis of Simvastatin tablets. The following are the data she obtained: 39.5 mg, 41.2 mg, 40.7 mg, 38.9 mg, 42.1 mg, 41.7 mg, 38.7 mg Suppose the mg of Simvastatin stated in label is 40 mg, is there a significant difference between her results and the label claim?In the standardization of HCl against pure anhydrous Na2CO3, 1mL was found to be equivalent to 0.05g of the primary standard. Compute for the normality.