Biology, 21.06.2019 23:30, stankyweezle. In a fixed volume container, 6*10^23 molecules of a gas exert a pressure of 12 N/m^2. 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). of O₂ molecules = (3.075 mol) × (6.023 × 10²³ molecules/mol) = 1.85 × 10²⁴ molecules Each O₂ molecules contains 2 O atoms Each mole of O₂ contains 6.023 × 10²³ O₂ molecules. The peroxide comes in a light blue color and it is liquid. How many grams of NaCl are produced if 80.0 grams of O_2 are produced? Therefore this decomposition reaction would eventually produce #"KCl"# rather than other salts that contain oxygen. Its formula is H2O2 which means that there are two oxygen molecules and two hydrogen molecules. Answers: 1 Get Other questions on the subject: Biology. Chemistry. 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. How many molecules of each reactant are needed? 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. We begin with a balanced chemical equation that is provided in the question. If 12*10^23 molecules of gas were added to the container, what would the pressure become? 10. How many moles of oxygen gas were produced? With the molar mass, this allows you to convert between mass, moles and molecules. 1mol C8H18 6.02x1023molec X 25mol O2 2mol C8H18 X 32.0g O2 1mol O2 = 4.80 x 103g O2. 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 … (6 points) NH3 and NO have same coefficients so will have some molecules on each side of reaction => 1.33*10^23 molecules 5. If 6.02 X 10 25 molecules of aluminum oxide are produced, then how many grams of aluminum metal and oxygen gas are needed? C8H18 X . H. 18? 7.22 x 1024molec. Isbella B. asked • 37m How many molecules of oxygen gas are present in a 0.108 g sample of oxygen gas? 24. molecules of C. 8. If there are two hydrogen peroxide molecules, that means that two water molecules and two oxygen molecules came together. The O b.What is the molar volume of the oxygen gas at the conditions in the laboratory? d. How many grams of oxygen are needed to react with 7.22 x 10 . a. No. Both the potassium cation #"K"^+# and the chloride anion #"Cl"^-# have attained a noble gas octet configuration of valence shell electrons. With Avogadro's number you can always find the number of molecules. The unbalanced synthesis reaction between aluminum metal and oxygen is: Al (s) + O 2 (g) ===> Al 2 O 3 (s). what can you conclude about the apperence of iceland many thousands of years from now? How many molecules of oxygen gas are produced from photosynthesis. 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 We set up a roadmap to solve the problem grams O_2 -> mol O_2 -> mol NaCl -> … 2NaClO_3 -> 2NaCl + 3O_2 Next we determine what we have and what we want. 11. 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? Chemical reactions tend to favor the most chemically stable combination. 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. Answer _____ 2] How many grams of aluminum oxide are formed when 25.0 grams of Aluminum are reacted with oxygen gas? 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