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How much sodium remains after two half lifes.? DESPERATE for step by step solution !
No calculator alowed. Need to show every step of cálculos .? Math . PLEASE help me ?!? Calculate the force of Earth s gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth s surface if its mass is 1100 kg? Which choice is equivalent to the quotient below when. The problem is in the photo below.i am scared please?