# Posts by maricela

Total # Posts: 15

**chemistry**

A sample of CaCl2⋅2H2O/K2C2O4⋅H2O solid salt mixture is dissolved in ~150 mL de-ionized H2O. The oven dried precipitate has a mass of 0.253 g. The limiting reactant in the salt mixture is K2C2O4⋅H2O. Determine Mass of K2C2O4⋅H2O(aq) in Salt Mixture in ...

*September 23, 2016*

**Geography**

Hot air balloon A is raising upward at a rate of 10.0 m/s. A passenger aboard balloon A observers balloon B going down at a relative rate of 12.5 m/s. What is the velocity of balloon B relative to the group?

*January 19, 2016*

**Math**

208

*October 21, 2015*

**MATH HELP**

A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 50.700 ft. give the area A of the window in square feet when the width is 8.800 ft. Give the answer to two decimal places.

*September 7, 2015*

**human relations**

A major obstacle to developing good human relations skills is that A.human relations aren't rewarding. B. Few persons have common interests. C. Common interests wont help to keep a conversation going. D.people fear taking risks.

*July 5, 2015*

**human relations**

Which of the statements is true? A.Waste isn't a problem in reaching group goals. B.individual productivity is more important than group productivity. C. Sacrifice isn't necessary to achieve group goals. D. Individual productivity Is necessary for group productivity.

*July 5, 2015*

**english**

Click on the box to choose whether each sentence restates the key idea expressed in the key sentence. Key Idea: When hot weather arrives and the nation takes to the outdoors, mishaps multiply. Drowning is the fourth most frequent cause of accidental deathin the summer.

*March 1, 2013*

**chemistry**

Suppose the concentration of sodium in Phoenix tap water is 70 ppm (mass based), then what is the concentration of sodium in milligrams per liter? The density of water is 1 g/mL. The answer units are mg/L.

*October 4, 2010*

**Art**

c. calligraphy

*May 5, 2010*

**art 101**

a. if it is a painting d. if it is a sculpture

*April 12, 2010*

**Science**

suppose that sunlight falls on both a pair of reading glasses and a pair of dark glasses. Which pair of glasses would you expect to become warmer? defend your answer.

*October 19, 2008*

**calculus**

Find the area of the largest rectangle that has its lower base on the x-axis and its upper vertices on the parabola whose equation is given by Y=12-x^2. i graphed the equation but its gives me a parabola, so i don't know what to do after that

*May 10, 2007*

**calculus**

A format for textbook page layouts is to be chosen so that each printed page has a 4-cm margin at the top and at the bottom and a 2-cm margin on the left and right sides. The rectangular region of printed matter is to have an area of 800 sq. cm. Find the dimensions for the ...

*May 10, 2007*

**math**

A box with a rectangular base and rectangular sides is to be open at the top. It is to be constructed so that its width is 8 meters and its volume is 72 cubic meters. If building this box costs $20 per square meter for the base and $10 per square meter for the sides, what is ...

*May 9, 2007*

**maxima/minima problems**

A regular box is open at the top and has a square base. To construct the box costs $4 a square foot for the base and $3 a square foot for its sides. Find the cost of the least expensive box and the dimensions of this least expensive box. There is not enough data given to set ...

*May 9, 2007*

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