A 58-year-old patient was taken to surgery for debridement of the left sinus. Direct smear of the clinical material from the left sinus obtained at the time of surgery indicated the presence of a mucormycete (zygomycete). Which of the following factor(s) predisposes an individual to infection caused by the group of fungi? Select all that apply.

Using the balanced chemical equation: 2Al + O3 —> Al2O3 What mass of Al2O3 can be produced from the reaction of 10.0 g of Al and 19.0 g of O3? 

What was the name of the supercontinent that formed approximately 1.1 billion years ago?  (billion, not million)

Balance the following double displacement equation: Silver bromide  +   Galium phosphate  —->   ___  _______  +  ____ ________

Give the formula aluminum phosphate   

An oxide of lead contains 90.65% Pb, by weight. The empirical formula is:

Dmitri Mendeleev organized the chemical elements:

Convert 1.75 lb to grams _________________

According to the first law of thermodynamics: 

How many calories are in 854.3 J? (1 cal = 4.184 J)?