Table 1: Gas Collection Data for Mg and HCI Reaction Mass Mg (g) 0.040 g Volume HCl (mL) 10.00 mL Concentration HCI 1.00 mol/L (mol/L) Atmospheric Pressure 14.50 psi ( Temp Air (°C) 21.0 Temp Water (°C) 22.5 Volume of Gas (mL) 17.20

HQ12.22 X Answered. 1 attempt left Find the volume of HCI gas at STP required to prepare 3.50 L of a 0.100 m HCI solution (assume water density = 1.00 g/mL). Numeric answer 8.68 X X Answered - Incorrect Done

est Ort a gamb rement: 56°F Cloudy Sodium chloride (NaCl) has a solubility of 36.0 g/100 g H₂O at 20 °C. Select the temperature at which the solubility of NaCl will be higher than 36.0 g/100 g H₂O among the following. U 20 °C O 10 °C O 40 °C chemistry and reaction of Employ... paymen... O 5 °C receipt % 10 f6 & hp

What is the concentration of helium dissolved in 3.5 L of water when enclosed in a sealed container and pressurized with 15 atm of helium gas? (kH(He) = 3.7 x 104 mol L-1 atm1) 0.019 mol/L O 0.0016 mol/L 0.056 mol/L O 0.0031 mol/L

Please help I'm not sure how to solve these.  A solution is prepared by dissolving 20g of NaCl (f.w.= 58.44 g mol^-1), a nonvolatile solute, in enough water (m.w. = 18.02 g mol^-1) to result in exactly 1 L of solution at 25 C. The density of the solution is 1 g mL ^-1.   How do you calculate freezing point of the solution as well as vapor pressure and the osmotic pressure? I understand boiling point.

g The solubility of Ni(OH)2 in water at 25 °C is measured to be 4.9 × 10-4 Use this information to calculate Ksp for Ni(OH)2. Round your answer to 2 significant digits. 8 0 x10 L 3

You are asked to prepare a 1.000 L solution of 4.5 M you commit a user error while preparing this solution. Assumed volume Volumetric error Preparation details Added water 2.0 cm above the line, which corresponds to 8.2 mL (0.0082 L) additional solution volume C6H12O6 (glucose; molar mass = 180.16 g/mol) in a lab by dissolving 811.0 g of glucose in water. Consider the following two scenarios in whic Prepared in a beaker Prepared in a volumetric flask 1.000 L You add the glucose to a volumetric flask and then add water until it dissolves. The water bottle you are using has a worn tip, and you inadvertently add too much water such that the meniscus is above the line. The diameter of the neck of the volumetric flask is 2.29 cm. 811.0 g glucose Concentration: You decide to evaluate and compare the errors you made while preparing the solutions using the different methods. Calculate the actual concentrations of the intended 4.5 M glucose solutions prepared by each method based on their…

Consider the neutralization reaction 2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq)2HNO3(aq)+Ba(OH)2(aq)⟶2H2O(l)+Ba(NO3)2(aq) A 0.125 L0.125 L sample of an unknown HNO3HNO3 solution required 54.3 mL54.3 mL of 0.200 M Ba(OH)20.200 M Ba(OH)2 for complete neutralization. What is the concentration of the HNO3HNO3 solution?

Where stated, classify reactions both by the key reaction event (PPT, A/B, R/O) and by the changes in composition (COM, DEC, SDP, DDP). 21. 2NI3(s) → N2(g) + 31,(g) classify: When 730 mL at STP of N2 form, mL at STP of I2 form as well. To make 55 liters at STP of I2t mol of NI3 must react.

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