Which of the following aqueous solutions are good buffer systems? . 0.11 m sodium hydroxide + 0.30 m sodium bromide 0.33 m potassium chloride + 0.20 m calcium chloride 0.28 m nitric acid + 0.23 m sodium nitrate 0.31 m ammonia + 0.31 m calcium hydroxide 0.21 m hydrofluoric acid + 0.20 m potassium fluoride

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)