# 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.

*October 18, 2016*

**chemi**

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

*October 18, 2016*

**chemistry**

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

*October 18, 2016*

**chemistry**

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

*October 18, 2016*

**Chemistry**

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

*February 4, 2014*

**World geography**

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

*April 26, 2013*

**Stat**

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

*December 4, 2012*

**5th Grade word problems**

De escritura

*October 31, 2012*

**Spanish 6th grado**

Mi pasatiempo favorito es tocar la guitarra.

*November 11, 2011*

**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?

*October 25, 2011*

**Math**

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

*January 24, 2011*

**11th grade**

2H2S(g)+3O2(g)→2SO2(g)+2H2O(g)

*May 24, 2010*

**math**

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

*February 1, 2010*

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