Calculating Glucose Solution Quantity
To determine the quantity of glucose needed for a 5% solution, we use the definition of a percentage solution (mass/volume).
A 5% solution means there are 5 grams of solute (glucose) in every 100 mL of the final solution.
Glucose Calculation Steps
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Identify the required concentration: 5% glucose.
This translates to 5 g of glucose per 100 mL of solution.
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Identify the required final volume: 1000 mL.
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Set up a proportion or use a direct calculation:
Amount (g) = (Concentration (%) / 100) * Volume (mL)
Amount (g) = (5 / 100) * 1000
Amount (g) = 0.05 * 1000
Amount (g) = 50 g
The molecular weight (180) is not required for calculating the mass needed for a percentage concentration.
Therefore, 50 g of glucose is required.
Important Questions from Basic Concepts
Arrange the following lamps based on the increasing power rating and energy consumption to provide the same level of Illumination or lighting
A. Incandescent Lamp with efficacy of 10 lumens/watt
B. Compact fluorescent lamp (CFL) with efficacy of 60 lumens/watt
C. Halogen lamp with efficacy of 20 lumens/watt
D. Mercury vapour lamp with efficacy of 40 lumens/watt
E. Light Emitting diode (LED) lamp with efficacy of 80 lumens/watt
Choose the correct answer from the options given below:
- The device in machine which feeds thread in sufficient quantity and tightens loop is :
- Following foods are cooked by the method of broiling :
(a) Papad
(b) Sweet potato
(c) Flaky pastry
(d) Chappaties
(e) Apple pie
Select the correct option : - Arrange the steps to set the needle in sewing machine in the correct sequence :
(a) Hold needle in the left hand
(b) Loosen thumb screw on needle bar
(c) Tighten clamp
(d) Insert needle through needle clamp
(e) Raise needle bar to highest by turning fly wheel
(f) Keep flat side of needle towards groove
Choose the correct option : - Who distinguished between value in use and value in exchange and gave the famous example of diamonds and water ?
