The volume of a sample of gas is 2.8 L when the pressure is 749,5 mm Hg and the temperature 31.2 What is the temperature in degrees Celsius if the volume increases to 4.3 L and the pressure increases to 776.2 mm Hg?

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.