Ethylene glycol, HOCH2CH2OH, is a common ingredient in automobile antifreeze. If 651 grams of ethylene glycol is dissolved in 1500 grams of water, what is the vapor pressure of the water over the solution at 90°C? The vapor pressure of pure water at 90°C is 525.8 mm Hg. (NEED ANSWER ASAP)​

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

All forces cause motion? true or false