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What is the meaning of percent by volume in science?
Suppose there is x% by volume of something in a mixture then it simply means out of 100 ml of that sample x ml is of that thing. ------------------------------------------------------------------- There are two common ways of indicating how much of each element or compound is contained in a mixture. They are percent by volume and percent by weight. For example, the amount of alcohol in an alcoholic beverage is measured in proof, where one proof equals one half percent alcohol by volume.
What is the difference of percent of mass and percent of volume?
Percent of an objects mass is expressed in terms of its weight. Percent of an objects volume is expressed in terms of its size.
How much does 1 liter of 40 per cent alcohol weigh?
The weight of 1 liter of 40 percent alcohol (which is typically a mixture of ethanol and water) is approximately 0.79 kilograms. This is because 40 percent alcohol by volume means that 400 milliliters of ethanol is mixed with 600 milliliters of water, and the density of the mixture is lower than that of pure water due to the presence of ethanol. Therefore, the weight can vary slightly based on the specific densities of the alcohol and water used.
What is the percent weight when you put 50 grams of solute in 1000 grams of solvent?
To calculate the percent weight (weight/weight percent) of a solution, you use the formula: [ \text{Percent Weight} = \left( \frac{\text{mass of solute}}{\text{mass of solute} + \text{mass of solvent}} \right) \times 100 ] In this case, you have 50 grams of solute and 1000 grams of solvent, so the total mass is 50 + 1000 = 1050 grams. Therefore, the percent weight is: [ \left( \frac{50}{1050} \right) \times 100 \approx 4.76% ]
Can 5 percent alcohol get you buzzed?
Yes, a beverage with 5 percent alcohol can get you buzzed, especially if consumed in sufficient quantities or if you have a lower tolerance to alcohol. Factors such as body weight, metabolism, and whether you've eaten can also influence how quickly you feel the effects. Generally, drinks with this alcohol content, like certain beers or ciders, can lead to a mild buzz if consumed moderately.
What does 86 percent alcohol mean?
An 86 percent alcohol solution means that 86 percent of the solution is pure alcohol, while the remaining 14 percent is likely water or other substances. This concentration is considered very high and is commonly used for disinfection purposes. It is important to handle high alcohol concentrations with care due to their flammability and potential health risks.
A pharmacist needs to obtain a 70 percent alcohol solution How many ounces of a 30 percent alcohol solution must be mixed with 40 ounces of an 80 percent alcohol solution to obtain 70 percent alcohol?
(Note: This answer assumes that the "ounces" specified are avoirdupois or other weight ounces and that percentages are by weight; otherwise possible volume changes on dilution must by considered.) The weight of pure alcohol in each solution is the product of the percentage and the total weight of the solution. Therefore, designating the unknown weight of 30 % alcohol as w, from the problem statement 0.30w + 0.80(40) = 0.70(w + 40), or 0.30w + 32 = 0.70w + 28, or 32 - 28 = w(0.70 - 0.30) or w = 4/0.40 = 10 ounces of 30 % alcohol.
How do make a percent sucrose solution?
To make a percent sucrose solution, dissolve a specific weight of sucrose in a specific volume of water. For example, to make a 10% sucrose solution, dissolve 10 grams of sucrose in 90 mL of water. The formula to calculate the amount of sucrose needed is: (percent sucrose/100) x volume of solution = weight of sucrose (in grams).
How many grams in 1 percent solution?
A 1% solution normally contains 1 gram of active ingredient per 100 ml of solution (weight-volume percent) Could also be 1gm per 100 gms (weight-weight percent)- but normally weight-volume is used.
What is the weight of 10 percent acetic acid?
The weight of 10 percent acetic acid solution would depend on the total volume of the solution. For example, if you have 100 grams of a 10 percent acetic acid solution, it would contain 10 grams of acetic acid.
What weight of glucose is required to prepare 2 L of a 5 percent weight to volume solution?
400 mls would require 40g of glucose for a 10% solution and thus 20g for a 5% solution.
How much water must be added to 40 ml of a 25 percent by weight solution to make a 2 percent by weight solution?
About 80ml of water must be added to 40ml of a 25 percent by weight solution to make a 2 percent by weight solution.
How do you determine the number of grams of an active ingredient in a solution based on the percent strength?
You can determine the number of grams of an active ingredient in a solution by multiplying the percent strength of the solution by the total weight or volume of the solution. This will give you the weight of the active ingredient present in the solution.
What is the meaning of percent by volume in science?
Suppose there is x% by volume of something in a mixture then it simply means out of 100 ml of that sample x ml is of that thing. ------------------------------------------------------------------- There are two common ways of indicating how much of each element or compound is contained in a mixture. They are percent by volume and percent by weight. For example, the amount of alcohol in an alcoholic beverage is measured in proof, where one proof equals one half percent alcohol by volume.
What are the commonly used mass fraction units in chemistry and how are they calculated?
Commonly used mass fraction units in chemistry include weight percent ( w/w), volume percent ( v/v), and mole fraction (X). Weight percent ( w/w) is calculated by dividing the mass of the solute by the total mass of the solution and multiplying by 100. Volume percent ( v/v) is calculated by dividing the volume of the solute by the total volume of the solution and multiplying by 100. Mole fraction (X) is calculated by dividing the moles of the solute by the total moles of the solution.
Blood Alcohol Concentration is the amount of alcohol in an individual's body measured by the weight of the alcohol in a volume of blood.?
% volume
How do you prepare 1 percent phenolphthalein in 2000ml?
To prepare a 1% phenolphthalein solution in 2000mL, you would need to dissolve 20g of phenolphthalein in 2000mL of solvent (usually water or alcohol). This will result in a 1% solution by weight/volume. Remember to wear appropriate personal protective equipment and handle chemicals with care.
