Discover Questions

.differentiate primary minerals from secondary minerals? provide best example for each of them? When the equation is balanced, Zn + CuSO4 → ZnSO4 + Cu, the coefficient of copper is:
0,
1,
2, or
3? Help me to solve about probability density function please? How can liberals say the big bang happened if none of them seen it? Find The Temperature of air if velocity of sound is 340 meter per second at that temperature?