A plant grows three inches in a month. Why is this a physical change?

The atomic mass of an element is defined as the weighted average mass of that element's? (1) most abundant isotope (3) naturally occurring isotopes (4) radioactive isotopes

Using the graph below, at what depth does the thermocline begin? A line graph relating ocean depth to water temperature. At 0 meters, temperature is approximately 27°C. At 50 meters, temperature is approximately 24°C.

Cube have side 11.4 cm. what's is its volume?

What is the [oh-] in a solution with a poh of 11.25

The theoretical yield for CuCO3. Cu (OH) 2+2h2SO4 ®2CuSO4+2H2O+3CO2

Energy leaves the sun as light from a region called the?

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples