When a sample containing the hydrogen carbonate ion, HCO3-, for this experiment sodium hydrogen carbonate, NaHCO3, is allowed to react with nitric acid, carbon dioxide gas, CO2 (g) and liquid water, H2O (l) is released. You will use the formation of bubbles of CO2 gas to indicate that the hydrogen carbonate ion is present. Create a balanced equation of this reaction

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

Stage in which a typical star has completely stopped fusion