Determine the type of reaction: agno3 + cu --> cu(no3)2 + ag double displacement single displacement synthesis decomposition

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

What is the correct lewis structure for chloroform chcl3

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123