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Nitrogen and hydrogen combine at high temperature, in the presence of a catalyst, to produce ammonia.
N2 (g) + 3H2(g) >> 2NH3(g)
Assume 0.220 mol of N2 and 0.716 mol of H2 are present initially.
How many moles of H2 remain?
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
Identify the element of Period 2 which has the following successive ionization energies, in kJ/mol. IE1: 1314, IE2: 3389, IE3: 5298, IE4: 7471, IE5: 10992, IE6: 13329, IE7: 71345, IE8: 84087.
With reference to relevant clinical analytes, discuss the use of immunoassay within clinical biochemistry.
experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?
What is the final Celsius temperature if 4.55 L of nitric oxide gas at 35°C is cooled until the volume reaches 1.00 L
When you analyze the proteins by electrophoresis, you find that protein B moves further towards the positive end of the gel. Explain if this result is consistent with your hypothesis about the difference between the two proteins.
If 25.0 mL of AgNO3 is needed to precipitate all the Cl- ions in a 0.795 mg sample of KCl(forming AgCl), what is the molarity of the AgNO3 solution.
A solution is prepared by mixing 78.0 mL of 5.00 M HCl and 35.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
A chemical reaction takes place in a container of cross-sectional area 100 cm2. As a result of the reaction, a piston is pushed out through 21 cm against an external pressure of 534 torr.
a student measured 50.0 ml of a salt water solution (density=1.021 g/ml) into a flask. The Cl minus in the measured sample required 16.67 ml of 1.0466 M AgNO3 solution to reach the end point.
Consider the following equilibria for phosphoric acid. H3PO4 ? H+ + H2PO4- K1 = 7.11 x 10-3 H2PO4- ? H+ + HPO42- K2 = 6.34 x 10-8 HPO42- ? H+ + PO43- K3 = 4.22 x 10-13
Write, using correct notation, the balanced nuclear reaction equation for each of the following:a. Electron capture by 93/43 Tc
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