Thursday

July 24, 2014

July 24, 2014

Total # Posts: 10

**math**

simplify 2xcubed+3x+5 divided by x+1. i am finding 2x squared-3x-5 and the book says 2xsquared-2x+5.please help am stuck

**History**

If u were a immigrant in America at 1880 its most likely u were a- german N Lutheran b Italin N Catholic C Irish N protestant Or D Swedish n protestant

**chemistry**

use the following data to calculate the mean bond enthalpy values for the C-H and C-C bonds. CH4(g)-C(g) + 4H(g) standard enthalpy change is +1648 kj/mol C2H6(g)-2C(g) + 6H(g) standard enthalpy change is +2820 kj/mol

**chemistry**

thank you

**chemistry**

What volume of 0.010M silver nitrate will exactly react with 20ml of 0.0080M socium chloride solution?

**chemistry**

a sample of compound C,H,N and O with a mass of 0.6216 was found to contain 0.1735g C,0.01455g H,0.2024g N.Its molecular mass 129.calculate its epirical and molecular formulas.

**chemistry**

an iron supplement is used to treat anaemia and 50mg of iron 2 is required per tablet.if the iron compound used in the tablet is FeSO4.7H2O,what mass of this compound would be required per tablet to provide the desired amount of iron 2?

**Math**

40.43

**Chemistry-Science**

I know that the edge for the first one is 2r so in terms of r the lattice point (pt) would = 16. To find the face diagonal using the Pythagorean theorem it would be (2r)^2+(2r)^2= (face diagonal)^2.. But every time I would plug it in, its incorrect. And for the body diagonal, ...

**Chemistry-Science**

Answer the following for a primitive cubic unit cell. Answers should be numerical, set r = 8.0 -edge in terms of r, the lattice pt radius:___ -face diagonal in terms of r, the lattice pt radius:___ -body diagonal in terms of r, the lattice pt radius:___ Answer the following fo...

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