Chemical properties include (choose the best answer) Melting and boiling point Density O Reactivity with other chemicals and molecules Solubility in various solvents
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- O Fash point of the given 272 °C=522 °F A flash point that is too low can be a fire hazard and may indicate contamination with Fire point of the given sample 320°C= 608°F more volatile components. Identify one volatile component in a petroleum mixture which may reduce the flash point of the mixture.Impure Compound X was found to have a melting point range of 106-114 oC. What do each of these numbers (104 and 112) represent?الإنجليزية Q 6 / Is there a relationship between pressure and molecular weight? With mentioning the relationship and the type of their association, if any? Q 7/ How do you distinguish crystalline materials from non-crystalline materials? Q8/ Draw the cleavage curve. with his explanation
- Mobile phase used in IEX can contain Organic solvent Water Salts DetergentMatch the compound with its use or occurence. Match each item to a choice: Choices: vinegar solvent butanoic acid formaldehyde cholic acid caproic acid bile acid vinyl acetate polymer stale butter insulation material vegetable oils foul odorWhy is water not used as a solvent in extraction of nuts
- Please choose an appropriate technique(s) to separate following compounds (it can be one, more than one, on none): Blue 1 (Food Dye) 792.85 g/mol Blue 2 (Food Dye) 466.36 g/mol None Simple Filtration Column Chromatography Separatory funnel Distilation Crystallization/Re-Crystallization Question 1 of 2 A Moving to the next question prevents changes to this answer. iTunes O O 0 000Arrange the following sets of compounds based on the property given in increasing order. Type in the number of the compound to the corresponding roman numeral, I being the lowest and IV being the highest. Solubility in hexane CH3CH2OCH3 CH3CH2CH2OH CH3COCH3 CH3COOH 1 41-propanol, 2-propanol, and 1-butanol all have boiling too close together to be separated using the simple distillation column. What equipment be used to separate a mixture of these three?
- Question 19 What will happen to the rate of a first order reaction if the reactant concentration is doubled? O The rate of reaction will double. O The rate of reaction will not change. O The rate of reaction will quadruple. The rate of reaction will be zero.Q1/Why do we use oil instead of water to determine the melting point of chemicals? Q2/What is the reason for the variation in the measured melting point of the same chemical? Q3/What is the best type of oil used to measure the melting point of chemicals? Why?When 3.97 g of a certain molecular compound X are dissolved in 75.0 g of cyclohexane (C,H12), the freezing point of the solution is measured to be 4.7 °C. Calculate the molar mass of X. If you need any additional information on cyclohexane, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. x10 미□