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23 mar 2020 · Answer: We need 0.68 moles of aluminium ions to be present to make 0.34 moles Al2 (SO4)3. Explanation: Step 1: Data given. Number of moles Al2 (SO4)3 = 0.34 moles. Step 2: The balanced equation. 2Al + 3H2SO4 = Al2 (SO4)3 + 3H2. Step 3: Calculate the number of moles aluminium ions.
The unit of molarity, M or mol/L, simply tells you how many moles of solute are dissolved in one liter of solution. For example, a 1 M (1 mol/L) solution contains 1 mole of solute in every liter of solution. For very low concentrations, mM (millimoles per liter), μM (micromoles per liter), or other smaller units are also used as units of ...
Science. Chemistry questions and answers. How many moles of aluminum ions are present in 0.34 moles of Al2 (SO4)3? Express the number of moles to two significant figures. Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. See Answer.
7 lut 2024 · Since each formula unit of Al₂(SO₄)₃ contains 2 moles of aluminum ions (Al³⁺), we can calculate this by simply multiplying the number of moles of Al₂(SO₄)₃ by 2, the number of Al³⁺ ions per formula unit. The calculation will be: 0.34 moles of Al₂(SO₄)₃ × 2 mol Al³⁺/mol of Al₂(SO₄)₃ = 0.68 moles of Al³⁺.
30 sty 2024 · Moles allow you to directly read weight from the periodic table (e.g., 1 mole of N₂ is 28 g or 1 mole of NaCl is 58.5 g). We can link the number of entities X in a specified sample – N(X), to the moles of X in the same sample – n(X), with the relation: n(X) = N(X)/NA .
Calculate the quantity of substance in moles using mass and chemical formula. Plus, learn six different formulas to calculate moles.
To calculate the number of moles of an element use the formula: n = m/M, where m is the Mass of the element, and M is the Molecular weight. How much is 1 mole to grams? The mass of one mole of a substance is equal to its molar mass in grams.
