How many cal of heat must raise the temp of a 138.45 g of silver ring from 11.8 c to 162.5 c? The specific heat of silver is 0.24 J/gc

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?

Determine the number of moles of air present in 1.35 l at 750 torr and 17.0°c. which equation should you use? n=pv/rt what is the number of moles present? ⇒ 0.056 mol a sample of n2 gas occupying 800.0 ml at 20.0°c is chilled on ice to 0.00°c. if the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? which equation should you use? v2= p1v1t2/p2t1 what is the final volume of the gas? ⇒ 932 ml these are the answers