jewellransom05 jewellransom05

03-05-2021
Chemistry

contestada

How many grams of potassium carbonate are needed to make 300ml of a 4.5M solution?

Respuesta :

SajjadGedow SajjadGedow

03-05-2021

Answer:

186.3g

Explanation:

4.5moles of K₂CO₃ is in 1000ml

? moles of K₂CO₃ is in 300 ml

(4.5 × 300)/ 1000 = 1.35 moles of K₂CO₃

1 mole of K₂CO₃ = (39 × 2) + 12 + (16 × 3) = 78 + 12 + 48 = 138g

1.35 moles of K₂CO₃ = ?

= (1.35 × 138)/1 = 186.3g

Answer Link

Otras preguntas

Brenton’s weekly pay, P(h) , in dollars, is a function of the number of hours he works, h. He gets paid $20 per hour for the first 40 hours he works in a week.

which of the following is not a renewable resource 1. gold 2. salmon 3. mahogany 4. fresh water

Does anyone know the answer?

8x what is x? Please

Where does condensation occur

Tell whether the system has one solution, infinitely many solutions, or no solution. 15y=-10x+45 2x+3y+=9

A 20-month-old toddler has been treated with permethrin for scabies. the toddler's mother asks, "is this medication working? my child is still itching." which r

Happy Horses Stable charges a flat rate of $12 to rent a horse plus $5 per hour. Charlie paid $37 to rent a horse. How many hours, x, did he pay to have the hor

An insurance company makes money according to earnings = p(e1)w1 + p(e2)w2, where p(e1) = 0.002641, w1 = -$25,000, p(e2) = 0.997359, and w2 = $193.08. How much

This law was passed by Congress in 1890 to prevent the formation of monopolies and any other contracts or agreements that resulted in a "restraint of trade."