Answers: 2
Chemistry, 21.06.2019 16:50
If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster
Answers: 2
Chemistry, 22.06.2019 04:00
Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
Answers: 2
Chemistry, 22.06.2019 10:30
How do you lengthen a pattern piece? (family and consumer science, sewing)
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
According to the valence bond theory, a triple bond in C2H2 consists of: A. 1.5 sigma bonds and 1.5...
Mathematics, 10.11.2020 20:50
Mathematics, 10.11.2020 20:50
Chemistry, 10.11.2020 20:50
Health, 10.11.2020 20:50
English, 10.11.2020 20:50
Arts, 10.11.2020 21:00
Mathematics, 10.11.2020 21:00
History, 10.11.2020 21:00