8. Se necesita una solución endulzada para preparar agua de limón, ¿Cuántos gramos de azúcar morena (C12H22O11) es necesario agregar a 600 mL de agua para hacer la solución ¼ molal? 9. Se preparo una solución 6 décimos molal de alcohol etílico (C2H6O) en agua. ¿Cuentos gramos de alcohol etílico están disueltos en 3000 mL de agua?

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

i wish i could but this one is weird give me abc and i can solve it.

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol