Chemistry, 19.07.2019 12:20 12345678912345678967
Which clue can be used to identify a chemical reaction as a combustion reaction
Answers: 1
Chemistry, 21.06.2019 23:00
Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom
Answers: 1
Chemistry, 21.06.2019 23:10
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 06:30
Summarize possible ways in which phases of matter could combine to form a solution.
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 clue can be used to identify a chemical reaction as a combustion reaction...
English, 11.11.2020 18:30
English, 11.11.2020 18:30
Mathematics, 11.11.2020 18:30
Chemistry, 11.11.2020 18:30
Mathematics, 11.11.2020 18:30
Mathematics, 11.11.2020 18:30
Social Studies, 11.11.2020 18:30
Health, 11.11.2020 18:30
Mathematics, 11.11.2020 18:30
Mathematics, 11.11.2020 18:30