Indiana Jones replaces the idol with a bag of sand of approximately equal volume: (Denisty of gold = 19.32g/cm3) ; density of sand = 2 g/cm3.)  A. Did he have a reasonable chance of not activating the mass-sensitive booby trap? Justify your reasoning.  B. Using a calculation, what is the mass of 1 liter of sand compared to 1 liter of gold?

37.) Consider particle A with a mass number of 62, atomic number 32 and an ionic charge of +2.  Which of the following is correct   a. A has an equal number of protons and neutrons   b. A has an equal number of protons and electrons   c. A has an equal number of neutrons and electrons   d. A has an equal number of protons, electrons and neutrons

Of the following subatomic particles, the one that has the lowest mass is   a. a proton.   b. a neutron   c. an electron.   d. a and b   e. a, b, and c; they all have the same mass.

Caused large deflections of alpha particles in Rutherford's experiment  a. proton b. neutron c. electron d. nucleus

number of fluorine. A tremendous explosion follows emitting light and heat able to be observed from a 41) A teenage child in Wisconsin throws a chunk of sodium metal into a lake consisting of freshwater with an approximate density of 1.01 g/mL. The chunk of sodium has a mass (in kilograms) equal to the atomic number of fluorine. A tremendous explosion follows emitting light and heat able to be observed from a drone flying at an altitude of approximately 53 m. How many atoms of sodium from the original chunk remain in Wisconsin after the reaction is complete? This is an MCAT style question. Keep in mind that some of the data given may not be necessary to solve the problem. Use four sig figs. 1.019/mL ら3m a) 4.616E25 b) 2.357E23 c) 2.853E26 d) 8.390E22 53

for Practice: Given that there are only two stable isotopes of chlorine: chlorine-35, with a mass of 34.968853 amu; and chlorine-37, with a mass of 36.965903 amu. Using the average atomic mass from the periodic table, find the percent abundance of each isotope. (Remember: The sum of the percent abundances must add to 100%).