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Match the chemical equations to the appropriate types of chemical reactions.
H2CO3-H20 + CO2
8Cu + Sg - 8 Cus
BaCO3-BaO + CO2
24+502- 2P205
KCIO3-KCI + O2
8Fe + S8 - 8Fes

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

Most short-period comets do not have randomly oriented orbits because

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )