Chemistry, 17.12.2019 09:31 mendezmarco2004
Match each vocabulary term to its definition. 1. electrons a. a horizontal row on the periodic table 2. metals b. a homogeneous mixture whose particles are too small to reflect or scatter light 3. period c. elements that are malleable, polish to a luster, conduct heat and electricity well and tend to lose electrons in a chemical reaction 4. compound d. elements with properties intermediate between those of metals and nonmetals 5. solution e. two or more elements that have chemically combined 6. protons f. negatively charged, subatomic particles 7. group g. a vertical column on the periodic table 8. metalloids h. positively charged, subatomic particles found in the nucleus of the atom
Answers: 3
Chemistry, 21.06.2019 22:30
Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0
Answers: 2
Chemistry, 22.06.2019 00:30
Drive down any three characteristic of modern periodic table
Answers: 1
Chemistry, 22.06.2019 13:00
These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.
Answers: 1
Chemistry, 22.06.2019 14:00
What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
Answers: 2
Match each vocabulary term to its definition. 1. electrons a. a horizontal row on the periodic table...
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