dioxygen, have a mass of 32.0*g. C is the correct answer. If I'm right just multiply 1.32g by 6.022*10^23 and the answer is 7.949*10^23 molecules. What is the empirical formula for magnesium oxide? To the justified number of significant digits, the masses given correspond to one mole of diatomic oxygen and two moles of diatomic hydrogen. This number is also known as a mole. If a mothball (C10H8) has a mass of 1.32 grams, how many naphthalene molecules does it contain? n=0.8875 mol. a. The molecular weight of oxygen gas is 32 (= 2 x 16) gm/mole. Molecular mass of O 2 = (16 +16) g per mole. Now, each mole of a substance contains an Avogadro's number (or, `6.023 xx 10^(23)` ) of particles. 1.5 mol X 6.0X10^23 molecules/mol = 9X10^23. Since oxygen molecules are O2, one mole oxygen molecules is 32 grams, so you have 1 mole oxygen molecules. Sixteen grams of oxygen gas contains 3.01*10^23 molecules. The number of molecules in half a mole is equal to half of Avogadro's number. For this we use Avagadro's number. 6.4/32=0.20mols of O2. The answer is 15.9994. Questions; Chemistry. Divide 6.4 grams by 32 grams to get the amount of mols you have. And N_A = "Avogadro's number" = 6.022xx10^23*mol^-1 Note that N_A oxygen atoms have a mass of 16.0*g. But N_A oxygen MOLECULES, i.e. Molar Mass: Avogadro's Number is a very large number. 1 grams Oxygen is equal to 0.062502343837894 mole. If one mole of oxygen gas is 32 grams, then 16 grams is equal to half a mole of oxygen gas. Therefore, 32 g contains â 6.022 × 10 23 molecules of di oxygen.. 1 g contains â 6.022 × 10 23 / 32 molecules of di oxygen. 20 c. 6.02 × 1023 d. 1.2 × 1024 Step 2: is to determine how many mols of O2 you have in 6.4 grams of O2. 48 g / 32 g/mol = 1.5 mol. There are 6.023 x 10^23 particles in a mole of something so that makes 5.35 x 10^23 molecules of oxygen in 28.4g of oxygen. How many molecules does a sample of an ideal gas contain if it is held in a 5.75 L container at 2.00 atm of pressure, and at a temperature of 25 °C? 1 mole is 6,022 *10^23 (avogadro constant) particles. ... 48.62 grams of magnesium reacted with 32.00 grams of oxygen to produce magnesium oxide. Which means mass 1 mole of di oxygen is equal to 32 g. As 1 mole contains 6.022 × 10 23 particles.. â Molecular mass of O 2 = 32 g per mole.. There are 2xxN_A oxygen atoms in a 32*g mass of dioxygen. (atomic masses: Mg = 24.31 and O = 15.99) answer choices Step 3: is to determine how many molecules are in 0.2mols of O2. The mass of one mole of any molecule is equal to the molecular mass number, expressed in the units of grams. The SI base unit for amount of substance is the mole. Molar mass of oxygen is 16 g . 2 b. First you find the number of moles of oxygen in 28.4g using the formula: n=m/M. 1 mole oxygen atoms is 16 grams. n=28.4/32. We assume you are converting between grams Oxygen and mole. You can view more details on each measurement unit: molecular weight of Oxygen or mol The molecular formula for Oxygen is O. How many grams Oxygen in 1 mol? One mole of oxygen is 16 grams, so one mole of oxygen gas is 32 grams. How many water molecules are created when 32 grams of oxygen react completely with 4.0 grams of hydrogen?
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