Which of the following data would support the claim that the gravitational force between objects depends on mass? (A)- An object’s weight can change depending on where it is on Earth.

(B)- The further a planet is away from the sun, the smaller the gravitational force.

(C)- Gravitational force is stronger on more massive planets.

(D)- A rocket can escape Earth’s gravity by traveling at high speed.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1