Chemistry, 19.05.2020 20:16 royaltyjl11
Which equation describes a reduction? Upper M g (s) right arrow Uper M g superscript 2 plus (a q) plus 2 e superscript minus. 2 upper C l plus 2 e superscript minus right arrow 2 upper C l superscript minus. Upper N a (s) right arrow upper N a superscript plus (a q) plus e superscript minus. Upper A l (s) right arrow upper A l superscript 3 plus (a q) plus 3 e superscript minus.
Answers: 2
Chemistry, 21.06.2019 14:00
Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.
Answers: 1
Chemistry, 22.06.2019 02:30
The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!
Answers: 2
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Which equation describes a reduction? Upper M g (s) right arrow Uper M g superscript 2 plus (a q) pl...
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