You find a ring with a mass of 107g you fill graduated cylinder with up with 10ml of water and put the ring into the cylinder. The water rises up to the 15ml mark. What is the ring made of

Although the diagram is not shown, i know that the convection is heated by a the core.

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b

It shows that you are ctually  doing what are u asking