How many atoms of oxygen are represented in 2 Ca(NO3)2? 6 12 10 4

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

If water is at -10 ° c and energy is added to the water until it is 50 ° c while maintaining a constant pressure of 760 mmhg, describe the phase change of the water?

Physical characteristics of down syndrome