how to prepare 1 m tris hcl ph 6.8?
159204
1.5 M Tris, pH 6.8 (stock buffer for stacking gels) For 1 L • Dissolve 181.65 g Tris base in around 700 mL of ddH2O • Adjust the pH to 6.8 with concentrated HCl • Bring up the volume to 1 L with ddH2O Note: Make sure to let the solution cool down to room temperature before making the final pH adjustment.
203391
['Mix together craft glue, dish soap, and water in a mixing bowl. ... ', 'Squeeze 4 to 5 drops of your favorite food coloring into the bowl. ... ', 'Stir in 1 cup (180 grams) of baking soda. ... ', "Continue adding baking soda until the slime isn't sticky to the touch. ... ", 'Keep your slime in an airtight container for 3 to 4 days.']
467110
a Check the speed of the reaction with the suggested volumes of reactants to be used – 2 cm3 of starch: 2 cm3 of amylase: 1 cm3 of buffer at pH 6. Ideally the reaction should take about 60 seconds at this pH: this is the usual optimum for amylase (see note 1).
771554
['Balance the equation.', 'Convert units of a given substance to moles.', 'Using the mole ratio, calculate the moles of substance yielded by the reaction.', 'Convert moles of wanted substance to desired units.']
815952
['3 tablespoons (44 mL) of white craft glue.', '3 tablespoons (44 mL) of shaving foam.', '⅛ tsp (0.5 grams) of baking soda.', '2 tablespoons (30 mL) of contact lens solution.', '¼ cup (100 grams) of light-weight air dry clay.', '0.25 teaspoons (1.2 mL) of yellow food colouring.']
780810
It takes 3 mol of HCl to neutralize 1 mol of Al(OH)₃. The coefficients of the balanced equation tell us that 3 mol of HCl react with 1 mol of Al(OH)₃.
1273093
Cool in a desiccator and transfer quantitatively to a 600 mL beaker. Add 250 mL of purified water (freshly boiled and cooled) and 10 mL sulfuric acid (96% H2SO4, sp g 1.84). Add rapidly from a buret about 95% of the theoretical quantity of potassium permanganate solution needed; stir until the solution is clear.
253979
['Add about 6.6 gm of granulated zinc (previously washed with 0.1M HCl and then water) and dissolve in a minimum amount of 2 M HCl.', 'Add more about 700 ml of purified water, mix and allow to cool to room temperature.', 'Make up the volume 1000 ml with purified water.']
744255
['Mix 1/2oz (15ml) No. 1 with 3oz (90ml) of water in a non-spraying applicator bottle. ... ', 'Without rinsing, apply a generous amount of No. 2 from roots to ends and comb through thoroughly.', 'Process for a minimum of 10-20 minutes.', 'Rinse, shampoo and condition. Follow with moisture and protein where applicable.']
542780
['1 gallon water.', '2 cups light corn syrup.', '4 teaspoons chlorine bleach.', '4 teaspoons lemon juice or vinegar (optional)']
139683
['Determine the mass of the water that has left the compound. ... ', 'Convert the mass of water to moles. ... ', 'Convert the mass of anhydrate that is left over to moles. ... ', 'Find the water-to-anhydrate mole ratio. ... ', 'Use the mole ratio to write the formula.']
1044143
Preparation is very simple. Start by adding the mole paste to your pot to reconstitute. Pour in triple the amount of liquid, chicken broth, or water. If you have 1 cup of mole paste, you will add 3 cups of liquid.
1255851
Dissolve 6.05 g of Tris base in 30 mL of H2O. Adjust pH to 7.5 with 5 M HCl. Adjust final volume to 50 mL with H2O.
58943
['Pour 2 tablespoonfuls of GRD powder into a glass.', 'Mix it well with a glass of cold water or milk.', 'Stir until there are no visible lumps.', 'The mixture is now ready to drink.']
1138500
To make the solution, mix 3 teaspoons of non-iodized salt (kosher salt with no additives is best) and one teaspoon of baking soda. Store this mixture in a small clean jar. When you are ready to use it, mix a teaspoon of the mixture into 8 ounces of distilled, sterile, or previously boiled and cooled water.
1242724
['3/4 cup water.', '2 tablespoons corn syrup.', '1 teaspoons white vinegar.', '1/2 cup cornstarch & 3/4 cup cold water combined.', 'food colouring optional.']
1125020
['Suspend 88.1 gm of dehydrated medium in 1 liter of distilled or deionized water.', 'Slowly bring to boiling, stirring with constant agitation until complete dissolution.', 'Do not autoclave.', 'Cool to 50°C and pour into sterile Petri plates.']