The local weather forecaster reports that the current barometric pressure is 30.
ID: 493874 • Letter: T
Question
The local weather forecaster reports that the current barometric pressure is 30.4 inches of mercury. What is the current pressure in atmospheres? A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6 Degree C. Determine the temperature at which the volume of the gas is 3.42 L. Which of the following is the correct net ionic equation for the reaction that occurs when solutions of Pb(NO_3)_2 and NH_4Cl are mixed? Pb(NO_3)_2(aq) + 2NH_4Cl(aq) rightarrow NH_4NO_3(aq) + PbCl_2(s) Pb^2+(aq) + 2Cl-(aq) rightarrow PbCl_2(s) Pb^2+(aq) + 2Cl-(aq) rightarrow PbCl_2(s) + 2Cl(aq) rightarrow 2NH_2(aq) + 2NO_3 (aq) + PbCl_2(s) NH(aq)+ NO_3 (aq) rightarrow 2NH_4NO_3(s) No reaction occurs when the solutions are mixed. A 16.4-g sample of HF is dissolved in water to give 2.0 times 10^2 mL of solution. The concentration of the solution is: How many grams of NaCl are contained in 350. mL of a 0.287 M solution of sodium chloride? Nitric oxide. NO, is made from the oxidation of NH_3 and the reaction is represented by the equation: 4NH_3 + 5O_2 rightarrow 4NO + 6H_2O What mass of NO can be produced from 7.55 g of NH_3? What mass of Na_2CO_3 is present in 0.300 L of a 0.723 M Na_2CO_3 solution? What volume of 1.45 M HCl is required to prepare 724.8 mL of 0.477 M HCl?Explanation / Answer
Ans 8
Inches of mercury is the unit of pressure, usually used in weather reports.
1 atm is equal to 29.92 inches of mercury. In the question, 30.4 inches of mercury is mentioned so atmospheric pressure will be , ( 30.4 × 1) / 29.92 = 1.016 atm.
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