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Interpretation:
Among the given options, the mixture sample that has variable properties throughout has to be chosen.
Concept Introduction:
The study that is concerned with composition, transformation, and characteristics of matter is known as chemistry. Anything that occupied space and has mass is known as matter. Amount of matter present in the sample is termed as mass. Matter includes all the things that are naturally occurring things and synthetic materials.
Matter can also be classified based on their chemical composition as pure substance or a mixture. Pure substance contains a single kind of matter and by physical means it cannot be separated into any other kind of matter. In other words, pure substance contain nothing else than the substance alone. Mixture is a combination of two or more pure substances and the important thing is that the pure substances retain its chemical identity even if it is mixed with other substance. This is because they are not chemically combined rather they are physically mixed.
Mixtures can be of two types. They are homogeneous and heterogeneous mixture. Homogeneous mixture is the one that contains only one visible phase while heterogeneous mixture is the one that contains visibly more phases and each of the phases has different properties. Heterogeneous mixtures do not have the same property throughout while homogeneous mixture has.
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Chapter 1 Solutions
Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Which of the following is the best explanation for a gel like this?A. Bromophenol blue was not added in the loading buffer.B. Glycine was not present in the buffer system.C. There was too much bisacrylamide in the gel solution.D. Gel was not overlaid after pouring the first gel solution.arrow_forwardYou dissolve a 3.435 gram sample of potato in acid to determine the levels of solanine (the reason why green potatoes are poisonous) and diluted it to a total volume of 500.0 mL. You have also created a standard curve as outlined below. Solve for the ug/gram concentration of solanine in the potato sample. ppm Solanine Std. Abs 0.213 5 0.315 10 0.423 15 0.532 Unknown sample 0.314 Your Answer:arrow_forwardA student performs a separation by TLC on a silica get plate that results in three spots. Ared spot is measured 23 mm away from the original sample spot, a blue spot is 42 mmaway, and a yellow spot is 49 mm away. The distance from the original spot to where thesolvent stopped is 55 mm.a) Calculate the Rf value for each component in the mixture. (Show your work and reportthe correct number of significant figures.) b) The silica gel plate is polar. Rank the three components in the mixture from lowest tohighest polarity. Explain your answer.arrow_forward
- 3. a) An aqueous solution is 3.50% by mass potassium bromide, KBr, and has a density of 1.02 g/mL. The molality of potassium bromide in the solution is _________m. b)An aqueous solution of magnesium nitrate has a concentration of 0.474 molal. The percent by mass of magnesium nitrate in the solution is _________%. c)An aqueous solution of cobalt(II) bromide has a concentration of 0.153 molal. The percent by mass of cobalt(II) bromide in the solution is _________%.arrow_forwardI. How much of a 3X stock of SDS Loading Buffer should you add to 20 uL of sample to make 30 uL of 1X?arrow_forwardA doctor orders 7 mg of compazine, which is used to treat nausea vertigo, and migraine headaches. If the stock solution is 1.5% (m/v) how many millilitres are administered to the patient? Express your answer to one significant figure and include the appropriate units... I want handwritten solution....i will up votearrow_forward
- 20 mL solution is 2 M NaOH. If 0.5 M HCl is to be added to this solution, calculate the pH of the resulting solution: A. when 10 mL of the 0.5 M HCl is added to the original solution of the base (initial pH). B. When 50 mL H20 is added to the original solution of the base.arrow_forwardCasein in milk is an example of: a. gas in liquid where liquid is the dispersed phase and gas is the continuous phase b. solid in liquid where the liquid is the dispersed phase and the solid is the continuous phase c. solid in liquid, where solid is the dispersed phase and liquid is continuous phase d.gas in liquid where gas is dispersed phase and liquid is continuous phasearrow_forward:The most important peculiarity of water when compared to other solvents is that water has إختر أحد الخيارات High boiling point, high melting point and high heat of vaporization A O High boiling point, low melting point and low heat of vaporization B O Low boiling point, high melting point and low heat of vaporization .C O Low boiling point, low melting point and low heat of vaporization D Oarrow_forward
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