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In the single replacement reaction between zinc and HCl, what reaction resulted from inserting the lit splint into the test tube mouth? PLEASE HELP, I'M STRUGGLING Use Newton's method 7 cos(x)=x+1 x=? What is the universe? A photon has a wavelength of 609 nm. Calculate the energy of the photon in joules. Enter your answer in scientific notation.? Put the following equations into an augmented matrices form:
5x + 8y = 15
2x â€“ 4y = 5?