This is for earth science I need help (Question 8.) What is the density of a mineral which has a mass of 100 grams and a volume of 25 cm3?

A.)0.25g/cm3
B.)2.5g/cm3
C.)4.0g/cm3
D.)2,500g/cm3

It couldn’t fit in the picture so I had to write it down. PLEASE HELP! ❤️

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Which accurately compares concave and convex lenses?