Using this reaction: 2 Fe (s) + 6 HCl (aq) →    2 FeCl3 (aq)  +   3 H2 (g)  When 1.836 L of 6.000 M hydrochloric acid react with 25.0 g iron how many liters of hydrogen gas form at 25.0℃ and 1.00 atm? a. 0.03132 mol b. none of these

Using this reaction:  2 Fe (s) + 6 HCl (aq)     →    2 FeCl3 (aq)  +   3 H2 (g) When 1.836 L of 6.000 M hydrochloric acid react with excess iron how many liters of hydrogen gas form at 25.0℃ and 1.00 atm? a. 0.5637 mol b. 0.09395 mol c. 135 L d. none of these e. 16.4 L f. 5.508 mol g. 0.1879 mol h. 0.03132 mol

Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. collected gas chemical water reaction Suppose the C0, gas evolved by a certain chemical reaction taking place at 45.0 °C is collected over water, using 圖 an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 32.9 mL. Sketch of a gas-collection apparatus Calculate the mass of CO, that is in the collection tube, Round your answer to 2 significant digits, You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases. Help Explanation Check étv 30 DII 110 F7 F3 & 24 % 09 %23 7 5 2 3

How many grams of Magnesium Oxide form when 14.8L of oxygen gas, measured in STP, completely reacts with Magnesium metal in accordance with the following reaction : 2MgO (s) + O2 (g) = 2MgO (s)

Automobile airbags are inflated by the rapid decomposition of sodium azide (NaN3). 2 NaN3(s) --> 2 Na(s) + 3 N2(g) What volume of N2 gas, at 0.973 atm and 21.3 oC, is produced by the complete decomposition of 119 g of sodium azide? V = ___ L

Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCI(aq) ZnClą(aq) +H2(g) The product gas, H,, is collected over water at a temperature of 20 °C and a pressure of 755 mm Hg. If the wet H, gas formed occupies a volume of 6.66 L, the number of moles of Zn reacted was mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.

T8 When 1.836 L of 6.000 M hydrochloric acid react with excess iron how many liters of hydrogen gas form at 25.0°C and 1.00 atm? This and the next 2 questions use the reaction: 2 Fe (s) + 6 HCI (aq) → 2 FeCl3 (aq) + 3 H2 (g) Select one: a. 0.5637 mol b. 0.03132 mol C. none of these d. 0.09395 mol e. 16.4 L f.5.508 mol g. 0.1879 mol h. 135 L

A fictitious metal called Oscium (MM = 72.4 g· mol) reacts with nitrogen gas according to the following reaction: 6 Oc (s) + N2(g) → 2 OC3N(s) Part A How many moles of N2 gas would be present in 55.1 mL at STP? Express your answer using three significant figures. ? mol

[References] Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal ions (such as Mn or Fe): 2H2O2(aq) → 2H2O(1) + O2(g) What volume of pure O2(g), collected at 25°C and 744 torr, would be generated by decomposition of 127 g of a 50.0% by mass hydrogen peroxide solution? Ignore any water vapor that may be present. Volume = L

Carbon dioxide can be made in the lab by the reaction of hydrochloric acid with calcium carbonate. CaCO3 (s) + 2 HCl (aq) --> CaCl2 (aq) + H2O (l) + CO2 (g) How many milliliters of CO2 at 20.0C and 745 torr can be prepared from a mixture of 12.3 g CaCO3 and 185 mL of 0.250 M HCl?