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Develop a leaching proccess route using Au, Ag , Co, Zn, Cu
1,Lisa consumes a total of 8700 kilojoules per day and her diet consists of 55% of carbohydrates. Calculate the quantity of carbohydrates that her diet provides per day in grams and choose the correct answer.
a.81 g
b.4785kJ
c.281 g
d.106 g
2.Mr Naidoo consumes 157 g of carbohydrates, 107 g of fat and 238 g of protein per day. Calculate the energy provided by each of the energy-yielding nutrients.
a.Protein = 238kJ; Carbohydrates = 157kJ and Fat = 107kJ
b.Protein = 4046kJ; Carbohydrates = 2669kJ and Fat = 4066kJ
c.Protein = 4046kJ; Carbohydrates = 2669kJ and Fat = 1819kJ
d.Protein = 4046kcal; Carbohydrates = 2669kcal and Fat = 4066kcal
The following molarities were calculated from replicate standardization of a solution: 0.5026, 0.5029, 0.5023, 0.5031, 0.5025, 0.5032, 0.5027, and 0.5026 M. Assuming no determinate errors, within what range are you 95% certain that the true mean value of the molarity can be found? Use the table below if necessary.
If the empirical formula of a compound is P2O3, and it has a molecular weight equal to 220 g/mol, what is its molecular formula?
When isopropanol (C3H80) burns in oxygen, carbon dioxide, water and heat are produced.
1. To which class does each enzyme belong? Explain your answers.
a.) pyruvate decarboxylase
b.) alanine aminotransferase
c.) alcohol dehydrogenase
d.) hexokinase
Some plants contain compounds that inhibit serine proteases. It has been hypothesized that these compounds protect the plant from proteolytic enzymes of insects and microorganisms that would damage the plant. Tofu, or bean curd, possesses these compounds. Manufacturers of tofu treat it to eliminate serine protease inhibitors. Why is this treatment necessary?
Substrates and reactive groups in an enzyme’s active site must be precisely aligned in order for a productive reaction to occur. Why, then, is some conformational flexibility also a requirement for catalysis?
Calculate the molarity of a solution containing 2.8 moles of ethyl alcohol (C₂H6O) in 500mL of solution.
What is the molality of 60.5% by mass of nitric acid (HNO3) solution?
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#340153 on Dec 2023