Oxygen and sugar is transported to cells by the what system 1. Excretory system
2. Nervous system
3. Circulatory system

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?