# Posts by rolando

Total # Posts: 13

chemisty
Calculate the moles of Cu in 8.4×1021 atoms of Cu. Express your answer using two significant figures.

chemi
Calculate the moles of Cu in 8.4×1021 atoms of Cu. Express your answer using two significant figures.

chemistry
Calculate the number of CO2 molecules in 7.30×10−2 mole of CO2. Express your answer using three significant figures.

chemistry
Calculate the number of Li atoms in 3.0 moles of Li. Express your answer using two significant figures.

Chemistry
How many grams of sucrose (molecular weight = 342.3 g/mol) would you dissolve in 350 ml to get a 7% solution?

World geography
Scotland's lake and rugged highlands were created by what?

Stat
What particular measure of correlation would be most appropriate for use with two variables measured at an ordinallevel?

5th Grade word problems
De escritura

Spanish 6th grado
Mi pasatiempo favorito es tocar la guitarra.

Science
an autographed baseball rolls off of a .70m high desk and strikes the floor .25m away from the base of the desk. How fast was it rolling?

Math
If line f is parallel to the line h, and line f has y-intercept 5, what is the equation of line f ?

11th grade
2H2S(g)+3O2(g)→2SO2(g)+2H2O(g)

math
what is the value of the cordinate of the solution to the system of equations x-2y=1 and x+4=7