Chemistry, 27.01.2020 22:31 mariahbugg7
Ammonia can be prepared by the reaction of magnesium nitride with water. the products are ammonia and magnesium hydroxide. when the equation is written and balanced, the coefficient of magnesium nitride is
Answers: 1
Chemistry, 22.06.2019 03:00
In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?
Answers: 3
Chemistry, 22.06.2019 11:00
What is the molar mass of a gas that has density of 2.054 g/l
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
Chemistry, 22.06.2019 13:30
How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
Answers: 1
Ammonia can be prepared by the reaction of magnesium nitride with water. the products are ammonia an...
Mathematics, 28.08.2021 01:00
Biology, 28.08.2021 01:00
Mathematics, 28.08.2021 01:00
Mathematics, 28.08.2021 01:00
Mathematics, 28.08.2021 01:00
Chemistry, 28.08.2021 01:00
Geography, 28.08.2021 01:00