Earth is unusual among the planets of the Solar System in having such a high concentration of oxygen gas in its atmosphere: Mars (with 0.1% O 2 by volume) and Venus have much less. 11. C8H18 X . The peroxide comes in a light blue color and it is liquid. In a fixed volume container, 6*10^23 molecules of a gas exert a pressure of 12 N/m^2. of O₂ molecules = (3.075 mol) × (6.023 × 10²³ molecules/mol) = 1.85 × 10²⁴ molecules Each O₂ molecules contains 2 O atoms Given that 4NH 3 + 5O 2 4NO + 6H 2 O, if _____ molecules NH 3 were made to react with an excess of oxygen gas, how many molecules of NO would form? The number of molecules present is given by the number of moles x the avogadro constant (6.022x10^23) So the number of oxygen gas molecules present is … Its formula is H2O2 which means that there are two oxygen molecules and two hydrogen molecules. 2NaClO_3 -> 2NaCl + 3O_2 Next we determine what we have and what we want. How many grams of NaCl are produced if 80.0 grams of O_2 are produced? In iceland, the mid atlantic ridge runs through the center of the contry. We have 80.0 grams of Oxygen and we want grams of Sodium Chloride. With Avogadro's number you can always find the number of molecules. what can you conclude about the apperence of iceland many thousands of years from now? Isbella B. asked • 37m How many molecules of oxygen gas are present in a 0.108 g sample of oxygen gas? Therefore this decomposition reaction would eventually produce #"KCl"# rather than other salts that contain oxygen. d. How many grams of oxygen are needed to react with 7.22 x 10 . Chemistry. b.What is the molar volume of the oxygen gas at the conditions in the laboratory? Oxygen gas is the second most common component of the Earth's atmosphere, taking up 20.8% of its volume and 23.1% of its mass (some 10 15 tonnes). Each mole of O₂ contains 6.023 × 10²³ O₂ molecules. H. 18? With the molar mass, this allows you to convert between mass, moles and molecules. Biology, 21.06.2019 23:30, stankyweezle. 24. molecules of C. 8. Chemical reactions tend to favor the most chemically stable combination. How many molecules of each reactant are needed? How many moles of oxygen gas were produced? Answers: 1 Get Other questions on the subject: Biology. 10. We set up a roadmap to solve the problem grams O_2 -> mol O_2 -> mol NaCl -> … No. We begin with a balanced chemical equation that is provided in the question. Both the potassium cation #"K"^+# and the chloride anion #"Cl"^-# have attained a noble gas octet configuration of valence shell electrons. The O How many molecules of oxygen gas are produced from photosynthesis. If there are two hydrogen peroxide molecules, that means that two water molecules and two oxygen molecules came together. The unbalanced synthesis reaction between aluminum metal and oxygen is: Al (s) + O 2 (g) ===> Al 2 O 3 (s). If 12*10^23 molecules of gas were added to the container, what would the pressure become? If 6.02 X 10 25 molecules of aluminum oxide are produced, then how many grams of aluminum metal and oxygen gas are needed? The total number of molecules in 32 grams of oxygen gas will contain {eq}\begin{align*} 6.022x10^{23} \end{align*} {/eq} Become a member and unlock all Study Answers Try it risk-free for 30 days Answer _____ 2] How many grams of aluminum oxide are formed when 25.0 grams of Aluminum are reacted with oxygen gas? 1mol C8H18 6.02x1023molec X 25mol O2 2mol C8H18 X 32.0g O2 1mol O2 = 4.80 x 103g O2. Avogadro's number (6.022 x 10^23) is a collective number which tells you how many molecules of a substance there are in 1 mole of that substance. a. 7.22 x 1024molec. (6 points) NH3 and NO have same coefficients so will have some molecules on each side of reaction => 1.33*10^23 molecules 5. The most chemically stable combination X 25mol O2 2mol C8H18 X 32.0g O2 1mol =! 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