Paolo added 5.8 mL of 4.9 M NAOH to 5.4 mL of 0.89 M HCI. Calculate the concentration, in units of M, of excess OH in the resulting solution. Note: Do not use scientific notation or units in your response. Sig figs will not be graded in this question, enter the unrounded value to four decimal places Carmen may add or remove zeros from vour response

If 2 ml of 25 N H2SO4 is transferred to 50 ml volumetric flask and complete to mark with ditilled water, the concentration of acid will be .. M* O 2.5 O 1.5 2 O 0.5 0 1 Non of these

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We used 0.001M of HCl

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1 Settings „l ? 9:57 AM • 97% kzb-vvdv-bir » Grace Dykstra is presenting TAM Mo Fa 2 H the amount of water added was 1000 mL instead. Would t V ז ןיידצל 1oODmL - LoNIcediud Lies solvent) concentrated than the initial KOOL-AID? Examples: Concentration Calculations Part A Determining Concentration from moles and V: (answers: 0.46 mel; 247 mol ; 0.658 ma) 1. Determine the molar concentration when 0.23 mol of sodium sulfate are dissolved in 500ml of water. G: lo00 0.50ol 0.a3 mol 0.50OL 0. a3 mol = 0.4b mol /L mol 0.500 L 1. 2. Determine the concentration when 1.20 moles of sodium hydroxide dissolves into 450 ml of water. 3. Determine the concentration of a Nacl solution if 25.0 g of sodium chloride is dissolved into 650 ml of water. Alyssa Khadija You Grac 22 others

Determine the molarity of a KOH solution when each of the following amounts of acid neutralizes 23.5 mL of the KOH solution: Input number only with the correct significant figures. a)  18.98 mL of 0.280 M H_3PO_4      blank       M KOH