Chemistry, 12.03.2021 02:20 martinezarielys17

Se preparo una solución midiendo 8.5ml de reactivo de acido fosfórico (pureza 85.05% en volumen y densidad de 1.88g/ml), la cual se aforo a un volumen de 250ml con agua destilada. Calcula la concentración normal del acido fosfórico. Utiliza los siguientes datos de pesos atómicos: H=1.0079, O= 15.999, P= 30.973g/mol

Realiza los cálculos en tu cuaderno y maneja 4 cifras significativas después del punto decimal para realizar todos los cálculos y resultado. En este examen solo incluye el valor numérico de la concentración con sus 4 cifras significativas después del punto decimal, no las unidades.

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 02:40

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

Answers: 2

Answer

Chemistry, 22.06.2019 08:00

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Answers: 3

Answer

Chemistry, 22.06.2019 20:00

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.

Answers: 2

Answer

Chemistry, 23.06.2019 05:40

Convert a speed of 201 cm/s to units of inches per minute. also, show the unit analysis by dragging components into the unit‑factor slots.

Answers: 1

Answer

You know the right answer?

Se preparo una solución midiendo 8.5ml de reactivo de acido fosfórico (pureza 85.05% en volumen y de...

Questions