Determine the average atomic mass for nitrogen given the following percentages: 95% N 3% 15N, 2% 16N.
9 N (Give entire numerical value (DO NOT
ROUND) - do not include unit and substance in answer)

Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know

What was bohr’s contribution to the planetary model

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j