For Be-10, find the: a.) mase defect (in grams)  b.) binding energy in kilojoules per mole. mass proton= 1.00728 amu; mass neutron= 1.00867 amu; mass Be-10 = 10.013534679 amu

Iodine has 37 known isotopes.  Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.

please explain

A dry oil shale has a unit weight of 26.3 KN/ m³ when saturated with oil of Unit weight 5.80 kN/ m3 the shale has a unit weight of 28.9 KN/ m³ . How many gallons of oil can be extracted from 4.72 x 106 m3 of saturated oil shale?

The energy released from fission is about 200 MeV per fission event or 3.2-10-11 J per 235U nucleus. The fission of 1 g of 235U generates about 1 MW of thermal power; thus, a reactor that contains 1 kg of 235U fuel generates about 1 GW (109 W). If the reactor core is immersed in a heat bath containing 8.7.105 liters of water (12 m x 6 m x 12 m) initially at 25°C, how long will it take for the water to begin to boil off? Assume that the heat capacity of water is constant and that there is no heat lost from the reactor coolant to the surroundings.

A sample of helium is initially at 605 torr in a volume of 2.85 L. At 24.7 °C you found the density of He to be 0.130 g/L and the density of Ar to be 1.30 g/L even though both samples had the same number of moles. Which one of the following best explains why the densities are different? A B C D Argon is a heavier atom than helium, so it has more mass in the same volume occupied by the gas. Argon is a larger atom than helium so it occupies more volume. An argon atom is more dense than a helium atom. The densities are different only because of rounding.

Predict the approximate ratio peaks in the mass spectrum of 1,2-Dichloroethane at m/z values 98, 100, and 102.

How are these equal? How would I know to match these? 25 km = 25,000 m 2.5 cm = 2.5 × 104 μm 0.25 m = 2.5 × 108 nm 2.5 mm = 2.5 × 10-6 km

The molecular weight of glucose is 180.16 g/mol. Say you want to make 100 ml of a 0.6M solution of glucose. How much glucose and water should you use? Show your calculations for how you would make this solution.