Which type of reaction is shown by the equation below? P4O10(s) + 6H2O(l) 4 H3PO4(aq)

a. Combustion
b. Double replacement
c. Synthesis
d. Decomposition

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Classify this reaction: 2al+n2-> aln.

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?