A moving object has 20 Joules of potential energy and has a mass of 10 kilograms. What is the formula used to velocity (blank 1)? How fast is the object moving in
meters per second (blank 2)?
Blank # 1
Blank # 2

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

confused

confused             hewdejdnjnjsnd

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