How many oxide ions (O-2 ) are needed to balance the positive charge of a titanium ion (Ti+4)?
A) 2
B) 1
C) 3
D) 4
E) 6
A
You might also like to view...
The change in the angle of the sun with latitude does not influence heating at Earth's surface
Indicate whether the statement is true or false
Biopesticides
A) often take 3 to 5 years to gain approval because of their complex mechanisms of action. B) require more training for proper application than more traditional pesticides. C) are often so ineffective that they must be replaced by more toxic pesticides. D) are naturally occurring biochemicals such a pheromones.
Based on your knowledge of the pressure gradient and Coriolis Effect, identify the proper pressure cell and location.
A. high pressure, Northern Hemisphere B. high pressure, Southern Hemisphere C. low pressure, Southern Hemisphere D. low pressure, Northern Hemisphere
Which of the following fossil fuels causes the least environmental problems?
A. Natural gas B. Coal C. Tar sands D. Oil