Questions asked
Which Level of Measurement best describes the following variable and instrument:
Josee Pacheco
Numerade educator
2. Compare the image seen in the compound microscope and dissecting microscope in terms of magnification, dimensions, inversion of image and direction of movement. Tabulate your answers.
Compute for the calibration constant of your ocular micrometer. Show your solution.
Mahendra Rathore
The equation below represents the reaction between nitrogen gas and hydrogen gas to form ammonia. The reaction occurs within a closed container and comes to equilibrium: N? + 3H? ? 2NH? What is the equilibrium constant expression for this reaction? A Keq = [NH?]² / ([N?][H?]³) B Keq = ([N?][H?]³) / [NH?]² C Keq = ([N?][H?]) / [NH?] D Keq = ([N?]²[H?]²) / [NH?]³
Nicole Smina
For the following UNBALANCED exothermic reaction, match the shift to the causal agent: HCl(g) + O2(g) ? Cl2(g) + H2O(g) Increase in pressure [ Choose ] Increase in Temperature [ Choose ] Addition of a Catalyst [ Choose ] Increase in volume [ Choose ]
Jennifer Hudspeth
2Na(s) + Cl2(g) ? 2NaCl(s) What would be the correct Keq for the reaction above?
At 427°C, a 5.0 L flask contains 20.0 moles of HCl, 18.0 moles of O2 , 12.0 mol of Cl2 , and 5.9 moles of water vapor at equilibrium. Calculate the Keq for the reaction: HCl(g) + O2(g) ? Cl2(g) + H2O(g)
CO(g) + 3H2(g) ? CH4(g) + H2O(g) If the reaction above has a Keq of 72, the reaction is in favor of:
An equilibrium is established between substances W, X, Y, and Z in the following reaction: W + X ? Y + Z How would the conditions of the equilibrium be affected by decreasing the concentration of substance W?
The chemical equation below represents a reaction at equilibrium in a closed flask: CO(g) + 3H2(g) ? CH4(g) + H2O(g) ?H = -206.13 (exothermic) What will cause the reaction to shift to the left?