Fatty foods become rancid due to the process of

As the temperature of a sample of gas falls from 37.8 ºC to 77.9 ºC, its pressure falls to 103.8 mm Hg. If the volume did not change, what was the original gas pressure? Select one: a. 91.9 b. 50.4 c. 120 d. 414

How many moles of hydrogen gas are produced from 2.35mol of water? 2K (s) + 2H2O (1) ► 2KOH (aq) + H2 (8)

The atomic radii of Li, Na, and Rb are 152 pm, 186 pm, and 244 pm, respectively. What is a reasonable estimate for the atomic radius of K? Group of answer choices 231 pm 105 pm 268 pm 163 pm

If there are 7.2 mol of H, how many moles of each do the following compounds are present? H2SO4

A 40 g sample of water at an inital temperature of 40°C is heated to 99°C. How much heat did the water absorb? The specific heat of water is 4.18J/gºC a. 413.82j b.-9864j c. 9864.8j d.-413.82j

How much heat is needed to raise the temperature of 75 g of a substance by 15 C when the specific heat is 0.92 J/g-C?

A nitric acid solution flows at a constant rate of 5L/min into a large tank that initially held 200L of a 0.5% nitric acid solution. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 10L/min.

How many molecules are in 237g (about a cup of water)

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?