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a weather ballon with a volume of 260.0L is launched at 20 degree C at sea level, where the atmospheric pressure is 1.00 atm. The balloon rises to an altitude of 20,000 m, where atmospheric pressure is 55 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000m?
Describe how branched-chain fatty acids affect the fluidity of membranes and rank the following fatty acids in the order of increasing solubility in water.
Consider the reaction: C2H5OH (l) + 3O2 (g) --> 2 CO2 (g) + 3 H2O (l) , ?H= -1.37 x 103 kJ When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat?
A sample of gas has an initial volume of 13.8L at a pressure of 1.26 atm If the sample is compressed to a volume of 10.8L, what will its pressure be?
The name of this covalent compound is nitrogen trioxide. d. The name of this ionic compound is manganese oxide.
what mass of solid La(IO3)3 is formed when 50 ml of 0.250 M La are mixed with 75.0 ml of 0.302 M IO3-
determine How many formula units(formula un) of sodium iodide(NaI) are present in 9.54 grams of this compound and also calculate how many gms of sodium iodide are present in 6.07E+21 formula units of this compound.
Determine how much dolomitic lime(is an anhydrous carbonate mineral composed of calcium magnesium carbonate CaMg(CO 3 ) 2 ) is required to apply to raise the pH to 7.0?
Oxygen gas is collected by water displacement from the reaction of sodium peroxide and water. The oxygen gas displaces 318 ml of water at 23 degrees C and 1 atm. What is the pressure of the dry oxygen gas?
Calculate the [H3O+] and the pH for a buffer that consists of 0.13 M HF and 0.29 M KF. (Ka of HF = 6.8x10^-4)
what volume of 420 ml of hydrogen occupy if the temperature is raised from 0 C to 95 C?
How many moles of oxygen are combined with 4.20 moles of chlorine atoms in C2O7?
find calories and joules lost when 75.0 g of water H20 cools from 86.4 degrees celsius to 2.1 degrees celsius.
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