Part A Use standard enthalpies of formation to calculate A:H° for the following reaction. 2H, S(g) + 302 (g9) → 2H2O(1) + 2sO2(g) Express your answer using one decimal place. Templates Symbols undo redo reset keyboard shortcuts help' A,H° = kJ mol¬1 Use standard enthalpies of formation to calculate A, H° for the following reaction. CH4 (9) + 202 (9)→CO2(g) + 2H2O(9) Express your answer using one decimal place. Templates Symbols undo redo 'reseť keyboard shortcuts help' A¸H° = kJ mol-1 Use standard enthalpies of formation to calculate A¡H° for the following reaction. C(s) + H2O(9) → CO(9) + H2(9) Express your answer using one decimal place. Templates Symbols undo rêdo 'reset keyboard shortcuts help' A,H° = kJ mol-1 Use standard enthalpies of formation to calculate A, H° for the following reaction. N2O4 (g) + 4H2(9) → N2(g) + 4H2O(g) Express your answer using one decimal place. Templates Symbols undo redo 'reset keyboard shortcuts help' A,H° = kJ mol-1 Submit Request Answer

Part c

All changes save 7. When two solutions are mixed, a color change occurs. The data tables show the time between mixing and the color change for two sets of conditions. For Condition One, the solution concentrations were constant and temperature varied. For Condition Two, the temperature was constant and concentrations varied. Condition One: Concentration Time for Temperature (°C) Sample Color to Change 1 10° 36 sec 22° 14 sec Condition Two: Temperature Time for Concentration Sample Color to % Change 1. 100% 15 sec 2. 50% 24 sec Which of these statements is true according to the data? O The reaction rate is greater at 22°C than at 10°C. O Reducing the temperature increases the rate of the reaction. The reaction is affected by changes in temperature not by changes in concentration. O Decreasing the concentration increases the reaction rate. PREVIOUS 17 of 25 NEXT SAVE & EXIT

Suppose a normally distributed set of data with 8900 observations has a mean of 123 and a standard deviation of 16. Use the 68-95-99.7 Rule to determine the number of observations in the data set expected to be above a value of 107. Round your answer to the nearest whole value. Hint: This problem is asking for how many observations not the percent. Answer Tip: Don't round any probabilities or percentages in your calculations. Keep all decimal places and round at the END of the problem.

please help?

In a particular trial, a student got a value for R of 0.083. Calculate the percent deviation of this result. Enter a number without the % sign. The percent deviation should be reported as a positive value.

kindly help me calculate the % error of the data

7. Don believes that fewer than one-third of the students at his college hold part-time jobs while in school. To investigate this, he randomly surveyed 116 students and found that 32 students held part-time jobs. a. ( - Provide a 90% confidence interval for the population proportion of students that hold a part-time job. b. 1 (a). ;Give the correct interpretation of the interval in part c. Extra Credit: Does this interval support Don's claim? Why?

kindly help me how to get or how they solve the  Average Height kindly show some solution on how did they get the answer

You can type the answer doesn’t have to be an audio.