Is a metal wire being bent a chemical or physical property?

What's the oxidation number of p205

What is another name for the rare earth elements? a. Group 1 c. Group 6 b. Lanthanide d. Alkaline Earth

What group of air pollutant gases destroy the stratospheric ozone layer

Why are 3 ammonium groups needed for every 1 nitride ion?

Which one of this is endothermic and which one is exothermic? CH2+O2 - > CO2+H2O+Energy CaCo+Energy - > CaCo+CO2

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.

What happens to wood when it burns?

El cuerpo humano tiene unos 6 billones de células (6,0x1012) y la población de la Tierra es de unos 8 000 millones de personas. Con estos datos aproximados, calcula las moles de células humanas que hay en la Tierra.

True or false: an apple looks red because it absorbs red light?