Chemistry, 21.09.2020 15:01 smithad382
Starting in 1982, the Federal Government made pennies out of zinc and used only a copper coating. Would the density of these pennies be less than the density of zinc, greater than the density of zinc, or exactly equal to the density of zinc?
Answers: 2
Chemistry, 22.06.2019 07:20
After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)
Answers: 1
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 21:50
What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car
Answers: 2
Starting in 1982, the Federal Government made pennies out of zinc and used only a copper coating. Wo...
Geography, 12.07.2019 23:30
Mathematics, 12.07.2019 23:30
Spanish, 12.07.2019 23:30
Mathematics, 12.07.2019 23:30
Social Studies, 12.07.2019 23:30
English, 12.07.2019 23:30
Mathematics, 12.07.2019 23:30
Physics, 12.07.2019 23:30