Which development in human history first made waste disposal a problem? a. decrease in birth rate b. growth of cities c. increase in agriculture d. new diseases

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

How many atoms of oxygen are contained in 160 grams of n2o3

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?