The osmolarity of a 1-l bottle of 5% dextrose solution is _____ mosm/l.

2 answers:

7 0

M(dextrose) = 50 g.
V(solution) = 1 L.
n(dextrose) = 50 g ÷ 180 g/mol.
n(dextrose) = 0,27 mol.
Osmotic concentration (osmolarity) is a measure of how many osmoles of particles of solute it contains per liter.
The osmolarity = n(dextrose) ÷ V(solution).
The osmolarity = 0,27 mol ÷ 1 L.
The osmolarity = 0,27 mol/L · 1000 mmol/m.
The osmolarity (dextrose) = 270 mosm/L.
The osmolarity (dextrose monohydrate) = 50 g÷197 g/mol·1000 =254mosm/L

creativ13 [48]2 years ago

3 0

The answer is 252 mOsm/L.
when Osmolarity is (the osmotic concentration) which measure of solute concentration as it is the number of (OSM) of solute per L of the solution.

According to the equation of osmolarity for nonelectrolytes (dextrose: glucose monohydrate):
Osmolarity = (g/L) / MW x 1000
when the MW of glucose monohydrate = 198.17 so,
by substitute:
∴ Osmolarity = 50 (g/L) / 198.17 x 1000 = 252 mOsm/L

You might be interested in

How many grams of water can be produced when 8.73 moles of benzene (C6H6) react with excess oxygen?. . Unbalanced equation: C6H6

Alex_Xolod [135]

2 C6H6 + 15 O2 = 12 CO2 + 6 H2O

2 moles C6H6 -------------------- 6 moles H2O
8.73 moles C6H6 --------------- ( moles H2O)

( moles H2O) = 8.73 x 6 / 2

( moles H2O) = 52.38 / 2

= 26.19 moles of H2O

Molar mass H2O = 18.00 g/mol

1 mole -------------- 18.00 g
26.19 moles ----- ( mass of H2O)

mass of H2O = 26. 19 x 18.00 => 471.42 g of water

hope this helps!

7 0

3 years ago

FOR 100 POINTS, IF INCORECT...

Lilit [14]

Answer:

Heat transfer occurred in the room through radiation

This is where heat is transmitted through vacuum or an empty space from a point to another.

From the furnace, the air molecules nearer the region gained higher kinetic energy hence colliding with other molecules in the room. This causes a positive temperature gradient which causes an increment change in temperature in the room.

${}$

6 0

11 months ago

In a robinson annulation, an α,-unsaturated carbonyl compound reacts with a carbonyl compound to afford a (new) cyclic α,-unsa

Marina CMI [18]

Robinson Annulation reaction is mainly done for the synthesis of six membered rings. This reaction is the combination of two reactions 1). Michael Addition Reaction and 2). Aldole Condensation.

The synthesis of desoxy-19-nortestosterone by Robinson Annulation is shown below,

4 0

2 years ago

CAN ANYONE ELP ME WITH CHEMISTRY PLEASE?? I will be asking multiple questions but even if you can only answer one-- I will still

vlabodo [156]

3, 9, 16 are correct! 17 should be b because buffered means that it resists change in pH

6 0

3 years ago

Nick is researching why baking powder is a common baking ingredient. He learns that baking powder contains tartaric acid and sod

Andrej [43]

Answer:

carbon dioxide gas

Explanation:

Leavening may be achieved by the process of fermentation, which releases carbon dioxide gas. Bakers' yeast, composed of living cells of the yeast strain Saccharomyces cerevisiae, is available as a pressed cake and in a powdered form.

4 0

2 years ago