xxkinsey5xx xxkinsey5xx

23-08-2017
Chemistry

contestada

How many grams of sodium hydroxide are needed to make 500mLs of a 0.125M NaOH solution?

Respuesta :

abhinjis abhinjis

23-08-2017

need 0.500 x 0.125 = 0.0625 moles of NaOH. The molecular weight is 23+16+1 = 40, so 0.0625 x 40 = 2.5 grams will do the trick.

Answer Link

Otras preguntas

Which of the following are valid comments ?(i) /* comment */(ii) /* comment(iii) / / comment(iv) */ comment */

A cream contains 20g of active ingredient in 60g cream base. What is the ratio strength

A truck drives 685 meters in only 29 seconds. what is the speed of the truck?

37. राउटरका कुनै दुई उपयोगिता लेख्नुहोस् । Write any two utilities of a router. (A)

Using the sine rule, calculate the length d. Give your answer to 2 d.p. d 38.5 m 72° 65° 43°

Someone dares you to drink 5 gallons of water in a few hours why might this be a bad idea?

What is the coldest temperature that other meat and fish must reach before it can be served? a) 145°F b) 160°F c) 165°F d) 180°F

Calculate the average kinetic energy per molecule, in joules, for O₂(g) at 298 K and 1.00 atm. a) 4.2 × 10⁻²¹ J b) 5.8 × 10⁻²¹ J c) 6.7 × 10⁻²¹ J d) 7.9 × 10⁻²

Over 92% of websites collect personal information, yet only _______% make their consumers aware of how information is being used

In a class, 40% of students study Maths and Science and 60% of students study Maths. What is the probability of a student studying Science given the student is