Friday

August 1, 2014

August 1, 2014

Total # Posts: 7

**Chemistry**

Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 260.0 mg of the compound in a 110 mL bulb at 100°C gives a pressure of 410.0 torr. What is the molar mass of this compound? whats the formula for this and do I need to convert anything?

**Chemistry-Explanation Please**

Oxygen gas can be generated by heating KClO3 in the presence of some MnO2. 2KClO3 → 2KCl + 3O2 If all the KClO3 in a mixture containing 1.00 g KClO3 and 0.25 g MnO2 is decomposed, how many liters of O2 gas will be generated at T = 24.0°C and P = 755.6 torr?

**math**

1. A teacher has 10 boys and 12 girls in her grade school class. In how many ways can she select 8 of the children to be in a play if she must select 5 boys and 3 girls. 2. The manager of the various displays in the Acme Fine Clothing Emporium has a window which will hold 4 du...

**Statistics**

In 1972, there were 3.4 trillion cigarettes purchased worldwide, and in 1984, there were 4.3 trillion cigarettes purchased worldwide(in trillions) in the year x, where x=0 represents the year 1972. (a) Which of the following linear equations could be used to predict the number...

**physics**

Approximately what force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 7.9 kg shot put (Fig. 9-66)? Assume the lower arm has a mass of 2.8 kg and its CG is 11.2 cm from the pivot point.

**algebra**

to rent a dvd a customer must pay $3.99 plus $0.99 for every day that it is late, write a rule in function notation for this situation? f(x)=3.99+0.99x

**Social studies**

where do all human comes from? from the mother stomach Most scientists believe that humans originated in Africa.

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