How many moles of calcium are in 5.00 g of calcium

Number of moles = 0.125 mol

Explanation:

Given data:

Mass of calcium = 5.00 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/ molar mass

Molar mass of calcium = 40 g/mol

By putting values,

Number of moles = 5.00 g/ 40 g/mol

Number of moles = 0.125 mol

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)

can you list the answers so i can answer