63. A Venturi tube may be used as the inlet to an automobile carburetor. If the inlet pipe of 2.0 cm diameter narrows to 1.0 cm diameter, what is the pressure drop in the constricted section for airflow of 3.0 m/s in the 2-cm section? (Assume air density is 1.25 kg/m³.)

I need all parts

2:17 ull LTE 4 MESSAGES now خالد الشاعر بس لازم تسجل ب امیل Write a net ionic equation for the reaction that occurs when potassium sulfite (ag) and excess hydrochloric acid (ag) are combined. Note: Sulfites follow the same solubility trends as sulfates. !!

Just the first one please!

What about any gasses that is created DURING the process of the reactants, and then lost/released while it is undergoing the reaction? Wouldn't that make all solutions suitable?

12 Which of the folowing is nota reason tora chemist to takeameting point ofa sample? a To check the purity of the solvent b To check the purity of the sample e To identity he sample d. To venty the sample 13 A chemist recrystalizes a sample as slowly as possible fur all of the fowing reasons except a To make the crystats as pure as possible To trap as litle solvent as possible e To make the sample as pure as possible d To remove the impurities faster 14 What type of reaction was the synthesis of Cyclohexane as seen below OH H,SO. a SNI b. SN d E 15 Label the dishilation apparatus, glassware and corect water flow in diagram below ton a

1. Precipitates are produced from a chemical reaction. Give at least 3 types of appearances or textures of precipitates.   2. Determine the strength of a Test Solution in millimolar concentration. [express answer up to 4 decimal places]   3.What gas (chemical name) is evolved when the odor observed is sour-like, and not too irritating to the nose?   4.Give at least 8 manifestations or observable results after a chemical reaction has completed.

Please answer 4 and 5 thoroughly because I have trouble understanding the lessons. Thank you so much for this gratitude

some people like to make their own hand lotion because it can be less expensive than buying it and they can add only the fragrances they like . a recipe for hand lotion calls for mixing 253 g of water ( ) with 264 g of glycerin ( ) . this recipe makes a total of 685 ml of hand lotion .

ame: Table 2. Determination of Acetylsalicylic Acid in Aspirin. 1) Aspirin Brand (and amount of acetylsalicylic acid on label) 2) Average molar concentration of NaOH Solution B (from Part A) 3) 4) 5) 6) Mass of aspirin tablet Mass of pulverized aspirin sample Initial buret reading Final buret reading 7) Volume of NaOH Solution B added 8) Moles of NaOH 9) Moles of acetylsalicylic acid in sample 10) Mass of acetylsalicylic acid in sample 11) Amount of acetylsalicylic acid per tablet T₁ 1.264 12) Mean amount of acetylsalicylic acid per tablet 13) Standard deviation for acetylsalicylic acid per tablet 14) RSD for acetylsalicylic acid per tablet 15) Relative percent error (%) 16) Is the mean amount per tablet acceptable? (Yes or no.) 0.000153 * 180. Kg Imol T₂ √3 1.261 1-259 Seat กา Basic 8.25 mg 0.0975 M Trial 1* Trial 2 *Show all calculations related to Trial 1, standard deviation, RSD, and relative % error. Mole of NaOH (0.0975) (14.3) = 0.000139 (0.0975) (15.7) = 8.000 253 23 0.0975)…