Which model of the atom is the most accurate

Which of the following contain nitrogen? Monosaccharides Amino acids Fatty acids Polysaccharides

Drag each label to the correct location on the chart. Match each empire to the conditions after its fall.

What term defines a hydrocarbon with at least one double bond between carbons?

An elephant eats about 500 pounds of grass and leaves every day. there are 2 african elephants and 3 asian elephants living in the city zoo.

Question 4 2 pts A careless chemistry student performed a chemical reaction where his theoretical yield of Magnesium oxide was 57.82 grams, but he actually produced 12.89 grams.

Consider HA2, the intermediate form of a diprotic acid. Ka for this species is 1024 and Kb is 1028. Nonetheless, the Ka and Kb reac - tions proceed to nearly the same extent when NaHA is dissolved in water. Explain.

Which of the following is true of group 6A? Includes Chlorine Includes Sulfur Gain 2 electrons Tend to form + 2 ions Have 5 valence electrons

What happens if you pour water in baking soda? Does it release energy? What kind?

Define chemistry in relation to biology and physics

If you have 39 g of sodium azide in an air bag [2nan3 (s) - > 2na (s) + 2n2 (g) ], then how many molecules of nitrogen gas will it make at stp?