For the following reaction=2Mn+ +8H2O +10CO2E(MnO4-/Mn2+)=+1.51V &E(CO2/H2C2O4)=-0.49V.At 298K, the equilibrium constant is
1.a bottle is labeled 20.0 percent by mass HCl with a density of 1.096g/ml calculate the morality . please show and explain work 2.what is the concentration in ppm of 3.70 L solution (d=1.00g/ml) containing 4.21×10^-7 kg of the pestcide DDT?
RNA Silencing How does your chose type of epigenetic modification function to shut-off or silence genes? How does your chosen type of epigenetic modification get passed down from parent to offspring? In other words, how or is it inherited? Give an example if one is known. Address the concept of environmentally-induced epigenetic changes. Is your […]
A person with pheochromocytoma is experiencing symptoms created by its hyper secretion of epinephrine, including high blood pressure, elevated heart rate, excessive sweating, anxiety, and weight loss. Where would this neuroendocrine tumor be located?
release of luteinizing hormone (lh) during the reproductive cycle of a female by increases in estrogen levels is an example of? A)negative feedback control b)reabsorption c)homeostasis d)secretion e)positive feedback control
An airtight box has a removable lid of area 2.0 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 105Pa. The inside of the box is completely evacuated. What is the magnitude of the force required to pull the lid off the box?
the long-term regulation of arterial blood pressure involves the a)release of hormones over a period of minutes b)immediate change in activity of the nervous system c)control of peripheral resistance d)stimulation of an increase in urine flow through the kidneys e)control of blood volume by the kidneys
A sealed container holds 0.020 moles of ideal nitrogen (N2) gas at a pressure of 1.5 atmospheres and a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol. a. What is the approximate translational kinetic energy of a nitrogen molecule, in SI units? b. What is the approximate quantity of heat, transferred […]
The hormonal trigger for menstruation involves a ________. a)reduction of inhibit secretion b)reduction of plasma follicle-stimulating hormone (FSH) c)loss of progesterone secretion from the corpus luteum d)drop in plasma luteinizing hormone(LH) e)loss of estrogen secretion from the adrenal cortex
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
