beryllium iodide has actually a molar fixed of 262.821 g mol−1 , which method that 1 mole of beryllium iodide has actually a massive of 262.821 g . To discover the mass of 0.02 mole of beryllium iodide, simply multiply the variety of moles by the molar massive in conversion factor form.

You are watching: How many grams are in 0.02 moles of beryllium iodide

Explanation:




The pKs of succinic acid room 4.21 and 5.64. How numerous grams of monosodium succinate (FW = 140 g/mol) and also disodium succinate (FW =

snucongo.org:

9.744g of monosodium succinate.

4.925g the disodium succinate.

Explanation:

To find pH that the buffer developed by the mixture the monosodium succinate-Disodium succinate is derived from H-H equation:

pH = pKa + log in ( / )

As you want a pH the 5.28 and also pKa is 5.64:

5.28 = 5.64 + log in ( / )

-0.36 = log in ( / )

0.4365 = ( / ) (1)

As full concentration that the buffer is 100mM = 0.100M:

0.100M = + (2)

Replacing (2) in (1):

0.4365 = (0.100M - / )

0.4365 = (0.100M - / )

0.4365 = 0.100M -

1.4365 = 0.100M

= 0.0696M

And:

= 0.0304M

As volume of the buffer is 1L:

= 0.0696 moles

= 0.0304 moles

Using molar massive of both substances:

Mass the monosodium succinate:

0.0696moles * (140g / 1mol) = 9.744g of monosodium succinate.

Mass of disodium succinate:

0.0304moles * (162g / 1mol) = 4.925g that disodium succinate.


5 0
1 year ago

1. Throughout an endothermic chemical reaction, a gas is consumed and a fluid produced.
tino4ka555 <31>
1. No2.No i hope this helps:)
8 0
9 month ago

How many significant figures space in the quantity 12.0 mL?O A. 1B. 2C. 3O D. 12
insens350 <35>

snucongo.org:

C. 3

Explanation:

12.0 - 3 significant figures 1,2 and also 0, because 0 is after decimal point.

See more: How Did Sasuke Get His Arm Back ? Does Sasuke Get A Prosthetic Arm


7 0
7 months ago
Dipole-induced dipole attractions exist between molecules the water and also molecules of gasoline, yet these 2 substances perform not mi
lana <24>

Gasoline is primarily octane, C8H18. Something like soap would be a good homogenizer. Soap is created of a lengthy hydrocarbon chain with a tiny, highly polar guideline on one end. Usually, the soap is the anion that a salt, NaX. This permits the polar end of the soap to stick come water, if the nonpolar end sticks come the oil.

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3 0
9 month ago
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