Enter your answer in the provided box. Calculate AHan for
Ca(s) + 1/2 O2(g) + CO2(g) → CaCO3(s)
given the following set of reactions:
Ca(s) + 1/2 0g) – CaOs)
CaCO3(s) + Ca(s) + CO2(g)
AH= -635.1 kJ
AH=178.3 kJ
kJ

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?