How many protons and electrons does a neutral atom of beryllium have A nine protons, nine electrons

B two protons, two electrons

C four protons, four electrons

D Four proton, five electrons

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What was bohr’s contribution to the planetary model

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11