Lculate the mass, in grams, of a single tellurium atom (mTe m
T
e
= 127.60 amu
a
m
u
).
Express your answer using four significant figures.

2.120x10^-22 g

Explanation:

Te 127.60 = 6.02214076*10^23 atoms

1 atom = 127.60/6.02214076*10^23 = 21.2001 x 10^-23 g

b. examine and describe cells

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)