In your data analysis for this lab, write a paragraph describing how and why electrons produce light, how this causes atoms to produce the characteristic colors of a flame test, how this information can be used to identify elements, what combination of metallic cations were present in the unknown mixture, and how you determined this based on your observations.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?