What reactions are responsible for the glow and heat from the sun? nuclear fission nuclear fusion chemical reactions atomic disintegration?

What is the basic unit of all matter? neutron atom electron proton nucleus

A cylinder with a moveable piston contains 0.87 mol of gas and has a volume of 334 ml. what will its volume be in an additional 0.22 mol of gas is added to the cylinder?

If you have a electromagnet how many it's magnetic field stronger

Was the Titanic ship made out of the element, titanium and does the name titanium have anything to do with the Titanic?

How would isopropanol behave when poured out of its container onto a table

What is the molar mass of mgf2

Hydrogen's sole electron occupies the 1s orbital but can be excited to the 4p orbital. List all the orbitals this electron might occupy on its way back to its ground state.

For the process 2SO2 (g) + O2 (g) Right arrow. 2SO3 (g), Delta. S = - 187.9 J/K and Delta. H = - 198.4 kJ at 297.0 K are known. What is the entropy of this reaction? Use Delta. G = Delta. H - TDelta. S.

Is condensation of dew on grass a chemical or physical change?

Which part of the eye controls whether or not the pupil dilates or constricts? iris cornea retina optic nerve