Titanium can be obtained from its oxide by the reaction shown here. When 42.0 g of TiO2 react with 11.5 gC, 17.8 gTi are obtained. What is the percent yield for the reaction? TiO2(s)+2C(s)→Ti(s)+2CO(g)

A) 77.6 %
B) 129 %
C) 70.7 %
D) 38.8 %

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

Draw metallic bonding if two copper

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !