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 %

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm