Is a marshmallow turning black when toasted a physical or chemical change?

What volume is needed to make a 4.0 molar solution holding 12 moles of solute? 3.0 liters 48 liters 12 liters 4.0 liters

When one continental plate slides beneath another

The ph of a substance equals - log[h+] where [h+] is the concentration of hydrogen ions. [h+] for tomato juice is 10-4. what is the ph of tomato juice?

A car advertisement states that a certain car that Emily loves can accelerate from 70km/h in 7 seconds find the cars average acceleration

A 0.100-l sample of an unknown hno3 solution required 32.9 ml of 0.200 m ba (oh) 2 for complete neutralization. what was the concentration of the hno3 solution?

Elements on the periodic table are arranged by increasing?

What is the difference between molecular formula and molecular model

The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is

What might be a scientific question? O A. One that deals with how something happens O B. One that deals with morals and beliefs O C. One that deals with likes and dislikes O D. One that deals with right and wrong

Calculate the energy released in the following fusion reaction. The masses of the isotopes are: 14N (14.00307 amu), 32S (31.97207 amu), 12C (12.00000 amu), and 6Li (6.01512 amu).