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A sample of 0.0500 mol of ammonia (NH3) gas had a volume of 235. mL.The temperature andpressure were held constant and some ammonia was removed from the sample. Its new volumewas 175 mL. How many grams of ammonia were removed
If 36 L of Hydrogen at 44 C and 94 kPa react with sufficient oxygen to produce water, what mass of water can be produced?
If none of the available reagents can be used for this purpose, then identify another reagent from the table that could be used. For each reagent you've identified, write down a balanced chemical equation for the reaction that occurs.
The halogenation of a hydrocarbon (RH): RH + X2 ? RX + HX may proceed by the mechanism below. Derive the rate law for the mechanism using the steady state approximation. (1) X2 ? 2X (2) X + RH ? R + HX (3) R + X2 ? RX +X (4) R + X ? RX
What is the pH of this buffer solution? (Neglect the volume change that occurs with addition of solid sodium nitrite) b.) Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Atoms of an unknown element have the following masses and percent abundance: 90.92% of the atoms have a mass of 19.988 u, 0.26% of the atoms have a mass of 20.983 u, and 8.82% of atoms have a mass of 21.978 u.
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. determine the partial pressure of O2?
Problem- The equation of line determined from a Beer's Law plot is y = 0.195x + 0.4. What is the resistance of an unknown water sample if the assumed concentration is 1.8ppm
What is the net charge of following polypeptide LEFVYSCQ at pH 10.07 and 13.56?
Explain which element is the central atom, define how many bonds does the central atom form, is it polar or non-polar, define what the direction of negativity is
if 6.73 g of Na2CO3 is dissolved in enough water to make 250 ml of solution, what is the molarity of the sodiam carbonate?
Constant pressure molar heat capacity of a compound is found to vary with temp, according to molar cp= 15.25 +.138* T--2.21*10^4/T^2 Calculate the enthalpy change when 1 mole of this compound
Explain how long would it take to build up a lethal concentration of CO of 1000 ppmv parts per million by volume
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