I need help on my chemistry, please! How many grams of O2 are required to burn 1.20 gal of C8H18 if Octane has a density of 0.692 g/mL at 20 degrees C? My last answer was 884 grams. I got this through
The odor of skunks is caused by chemical compounds called thiols. These compounds of which
butanethiol (C4H10S) is a representative example can be deodorized by reaction with household bleach (NaOCl)
If I were to dissolve 100 mg of salicylic acid, whats the minimum volume of hot water do I need? How to calculate that? Thanks-It depends on the solubility of salicylic acid.
The source below says 2.2
A patient receives all her nutrition from fluids given through the vena cava.Every 12hrs, 750mL of a solution that is 4% (m/v) amino acids, and 25% (m/v) glucose is given along with 500mL of a 10% (m/
A sample of N2O5 was composed of 6.499 g of nitrogen and 18.55 g of oxygen. How many grams of oxygen would there in a sample of NO that contained 8.534 g of nitrogen?-weight of N atom/weight of O atom
Im trying to calculate the Osmolality and Freezing Point of the following problems with the given information: Water Kf = 1.86 C/m , F. pt. = 0.00 Celsius degrees
1) 2.00 m Na2SO4
2) 2.00 m Na3PO4
I
The mass of an individual atom of scandium is 44.96 amu. How many atoms would weigh a total of 0.00003935 g of this element if the mass of 1 amu is 1.6605x10-24 g?-0.00003935 g* 6.023 E23/mole* 1 mole
A photon of radiation of wavelength 305 nm ejects an electron from a metal with kinetic energy 1.77 eV. What is the maximum wavelength capable of ejecting an electron from the metal?-1 eV = 1.60E-19 J
How many photons with a wavelength of 625 nm is needed to heat a 225 g block of ice?
What is the power needed to heat it in 25 seconds?-Are we assuming that youre merely melting the block of ice, and
A blood cholesterol (C27H46O) level >240 mg per deciliter usually suggests medical intervention is needed.
If a patient has 247 mg/dL cholesterol level, calculate the concentration in terms of molar
When 3.40 g Na burns in air, 4.59 g oxide is formed. What is the empirical formula of the oxide?-Molar mass of Na is 23g
so the molar mass of the oxide is 23*4.59/3.4=31.05
if you substract 23 from
i am so confused :((((((((((((((((((((
the specific heat of a solution is 4.18J/g.C and its density is 1.02 g/ml. the solution is formed by combining 25.0 ml of solution a and 25.0 ml of solution b, w
1. Chemical Change
2. Chemical Property
3. Phyiscal Change
4. Physical Property
Please choose one-well, the answer CANT be the chemical ones, because size has nothing to do with changing the molecula
