How many grams of carbon dioxide would be producedfrom the following reaction, if175 kJ of energy is given off? 2 CO + O2→2 CO2ΔH = -566 kJ

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element

What 3 categories are elements divided