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A 3 gallon mixture contains one part S and two parts R In order to change it to a mixture containing 25 percent S how much R should be added?
Wiki User
∙ 14y ago
Call the unknown amount of substance R to be added a. The mixture initially contains 1 gallon of S combined with 2 gallons of R. After the addition, the mixture will contain the oiginal 1 gallon of S and (2 + a) gallons of R. In order for the content of S to be 25 % after the mixing, 1 gallon must equal 0.25(1 + 2 + a)gallons, or (1 - 0.75)gallons = (0.25)a, or a = 0.25/0.25 = 1 gallon.
Wiki User
∙ 14y ago
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What happens to the chemical properties of a substance when it becomes part if a mixture?
Depends of course of what substances the mixture contains. Depending of the substances in a solution or mixture as you typed, the properties of each one or all of them may be altered when heated up, or when those substances do not combine chemically each other.
IronIII reacts with thiocyanate to form a red complex formula. what change we will observe if we add a solution containing ironIII to this mixture?
When a solution containing iron(III) is added to the mixture, the red complex formed with thiocyanate will likely become lighter in color or change to a different color due to the formation of a new complex involving iron(III). This change is a result of a chemical reaction between iron(III) and the components of the existing complex.
What were at least five observations you made that indicated a reaction had occurred in part a?
Color change in the reaction mixture. Formation of a gas, indicated by bubbles or fizzing. Change in temperature of the reaction mixture. Formation of a precipitate, where a solid appears in the mixture. Production of a new odor or change in smell of the reaction mixture.
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A log is a mixture regardless of whether it is burning.
When you create a mixture and a change occurs it is called a?
When you create a mixture and a change occurs, it is called a physical change. This means the substance's state or appearance has altered, but its chemical composition remains the same.
Is macaroni a chemical change or mixture?
Macaroni is a mixture not a change.
How do you reverse the process of making a mixture a physical change?
= a mixture is physical change... =
What happens to the chemical properties of a substance when it becomes part if a mixture?
Depends of course of what substances the mixture contains. Depending of the substances in a solution or mixture as you typed, the properties of each one or all of them may be altered when heated up, or when those substances do not combine chemically each other.
Which of the following is a physical change?
Forming a mixture
IronIII reacts with thiocyanate to form a red complex formula. what change we will observe if we add a solution containing ironIII to this mixture?
When a solution containing iron(III) is added to the mixture, the red complex formed with thiocyanate will likely become lighter in color or change to a different color due to the formation of a new complex involving iron(III). This change is a result of a chemical reaction between iron(III) and the components of the existing complex.
Can amount of each substance in a mixture cannot change?
The amount of each substance in a mixture can change if more of a substance is added or removed, causing the proportions of the substances in the mixture to change. However, the total amount of each substance in the mixture will remain constant.
The substances in a mixture do not .?
change.
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when you separate a substance from a mixture, it's a physical change... Technically, you can get it back in the mixture.
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you change the percent to a decimal and then multiply it by 360
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The percent of change is -75%
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The percent of change -25%
What is the percent of change from 280 to 126?
what percent of change : from 280 to 126
