How many grams of K2Cr207 are in 250. mL of 0.500M of K2Cr207:

1 answer:

7 0

Analysing the Question:

We are given a 250 mL solution of 0.5M K₂Cr₂O₇

Which means that we have:

0.5 Mole in 1L of the solution

0.125 moles in 250 mL of the solution [dividing both the numbers by 4]

Mass of K₂Cr₂O₇ in the given solution:

Molar mass of K₂Cr₂O₇(Potassium Dichromate) = 194 g/mol

we know that we have 0.125 moles in the 250 mL solution provided

Mass = Number of moles * Molar mass

Mass = 0.125 * 194

Mass = 36.75 grams

You might be interested in

Likurg_2 [28]

D i took the test Enjoy :))))

7 0

3 years ago

Alona [7]

<h3>Yes mam it is tinder .....</h3>

5 0

3 years ago

Burka [1]

Divide 74 by 2-37 :)

Two parents, each parent carries half of the chromosomes

3 0

3 years ago

n200080 [17]

Answer:

A. 3

Explanation:

There is half as many moles of CO₂ as of O₂. Half of 6 is 3. The equation is:

$6 molO2*\frac{1molCO2}{2molO2} = 3molCO2$

6 0

3 years ago

Vladimir79 [104]

A ph of this solution is 4 because you have to round the 3.4

B 100 because that 4 doesn’t mean anything

7 0

3 years ago