Which is the part of a plant absorbs sunlight

a. flower

b. stem

c. leaves

d. stigma

Which of the following vertebrates evolved in the Carboniferous period? Amphibians Reptiles Mammals Fish

Based on the location of nitrogen (N) on the periodic table how many additional electrons does a nitrogen atom need in its valence shell to satisfy the octect rule when it forms bonds

How many vitamins are known to be required in the diet of human beings? ?

A chemical reaction has just occurred in an insulated isolated system which caused an overall increase in the potential energy of the system. Which statement below is true? Select one: a. The temperature of the system decreased. b.

What products form when a hydrocarbon is completely combusted in air?

15.434 g of kcl (m. m 74.55 g/mol) is dissolved in water up t a total volume of 500.0 mL. the density of this solution is 1.02 g/mL. what is the concentration of he solution in molality

Determine the molar mass of an unknown monoprotic acid to two decimal places if 20.01 ml of a 0.098 m naoh solution were used to titrate 0.215 g of the unknown acid

A diatomic molecule with a triple covalent bond is A. H2 B. N2 C. O2 D. Br2 (P. S. The answer turned out to be B. N2)

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?