Before slow cooking a meat (for example, in a crockpot/slow-cooker) you will often find instructions to sear the meat on high heat in an oiled skillet for a few minutes before transferring it to the crockpot. The searing is brief – not long enough to cook the meat thoroughly. Despite myth/legend, the searing will not “seal in the juices”. What is the searing for?

Assume the average person needs 75mg of vitamin C per day. If you were to travelacross the Atlantic Ocean (a 50 day voyage), how much (in volume) of your commercialsample would be needed?

2. Show solution. Thanks!

Dissolution Distilled H20 Concentration 0.01 M HCI Concentration (mg/ml) Time Total amount A Total amount A (mg/ml) (mg) (mg) 5 0.16 0.1 10 0.24 0.18 15 0.35 0.25 20 0.48 0.34 25 0.58 0.4 30 0.67 0.5 1. Plot the given data on an ordinary paper and find the slope for each line then calculate the IDR constant for aspirin in the two dissolution media, water and HCI. NOTE: Slope of the calibration curve = 1.0 (mg/ml and saturation solubility of salicylic acid is equal to 2.0 gm/L.

Organic solvent has a density of 1.12g/mL and is insoluble in water. If organic solvent is mixed with water, water will be the top layer..

Bl pure substances, physically combined. Good examples of a solid mixture would be a salad or a bowl of trail mix. Solutions are mixtures too. A spoon full of sugar dissolved in water is an example of both a mixture and a solution. Because mixtures are physical combinations, they are easily separated. Here is a list of mixtures. Match the best method to separate the parts of each mixture. Boil the water. Collect the solid. ITEM BANK: Move to Top drag and drop answer here Dissolve salt in water. Pour through filter paper and collect the sand. Gravel and rocks drag and drop answer here Sand and gravel Remove iron filings with magnet. drag and drop answer here Sand and iron filings Sand and salt Use a screen to sift and separate the big pieces from smaller pieces. drag and drop answer here Sand and wood shavings drag and drop answer here Sugar water Pick out the bigger particles. drag and drop answer here Add water and float one type of particle. 53°F A O O a search 立

Calculate the mass and volume (mL) of 5.0 mmol triethylsilane Mw: 116.28 g/mol Density: 0.728 g/mL

Based off information from the attachment, please help with #11 on second attachment

What is a possible testable question (in correct format) that Marisa might ask for this Sanrio?

Solve the attached Problem.

1. For each field, which problem is being addressed by the consumer product? 2. What are some chemical components of the consumer products?

A student takes the following steps during an experiment: Measure 15mL concentrated HCl (student uses a 50mL graduated cylinder) Weigh -4.0 grams of tert-butyl chloride (student weighs in a 25 mL beaker on balance #3) Transfer HCl and tert-butly chloride to a 125mL separatory funnel (student pours both liquids from their containers in to the funnel) Swirl the sep funnel for 5 minutes, shake and vent for 15 minutes (student shakes and vents as directed) Place the funnel in the ring support and allow layers to separate (student waits, sees a few bubbles in the layers, decides to continue) Drain the lower layer to waste, drain and dry the top layer with CaCl2  (student collects top layer in a small clean beaker and adds CaCl2 to dry) Gravity filter through fluted filter paper into a clean beaker of known mass (student filters as directed)  When the student calculates the % yield from the reaction, it is a disappointing 22%.   List at least 5 specific sources of error that may have…

When purifying a sample of aspirin that was produced in the lab, the impure aspirin sample should be dissolved in a very cold solvent, so that solid impurities can be filtered and analyzed the next day or the next week. True or False?

Answer questions 1 and 2 according to the data given. Dater Weight of cream i: 326 kỳ. Table shows some data obtained directly from Lactascan instrument. Fat % SNF % Lacto- density 27.32 30.23 Raw milk 4.15 7.97 Skim milk 0.08 8.26 Q1. Calculate fat percent of creamn A) 46 B) 28 (C) 3D D) 0.046 آدرما 396 100 x Q2. Calculate efficiency of the cream separator. A) 100% B98% C) 97% D) 96% E) 87.2% amount 2500 L E) 0.28

Unit 3-Two slides 11. Create a question that involves your compound and the formula m= n.M. Solve the question and show all of your work. wwwww 12. Create a question that involves your compound and the formula n = N/NA. Solve the question and show all of your work. TE

During a laboratory experiment, a student mixed two homogeneous aqueous solutions.  After mixing a solid precipitate was formed.  What is the best way for the solid to be separated from the solution? Put it in a beaker and heat it. Filter it using a Buchner funnel, filter flask and vacuum pump. Use a pipette to remove the solid from the liquid. Scoop it out with a spatula. The solid cannot be isolated.

Chemistry Hello! Can you please explain why these answers are wrong? Thank you.

A group of students performed a melting point experiment to study the physical properties of ionic and covalent solids. The data collected are shown in the table.  Solid Sample Melting Point (oC)  Time Elapsed (min) Table Sugar (sucrose) 186 18 Table Salt (sodium chloride) 500 (not observed) 30  Paraffin Wax 37 4  Vegetable Lard 50 >5 Using the information contained in the table, what is the BEST explanation for the results?A    The melting point of sodium chloride was not observed because ionic solids do not melt, whereas sugar, wax, and lard melted because they are softer than salt.B    The melting points of covalently bonded solids tend to be lower than ionic solids. The melting point of sucrose was greater than the wax or the lard because sucrose has stronger bonds than wax or lard.C    The melting point of sodium chloride was not observed because ionic solids are composed of positive and negative ions that do not melt; whereas, the…

Water softening is necessary to prevent clog in plumbing and prevent formation of scum in bathrooms and sinks. O True O False

There are 74 milligrams of cholesterol in a 3.1-ounce serving of lobster. How much cholesterol is in 11 ounces of lobster? How much cholesterol is in 11 ounces of lobster? ANNA ‘

13) 16.0 grams of a certain food contain 130 calories. How many grams of this food would you need in order to consume 2150 calories? 14) The speed of sound in air is about 343 m/s. What is this speed in miles per hour? 15) If the gas in England costs £2.99/1, what is the cost in $/gal? (assume E1.00 = $1.50) 16) Calculate the density of mercury (13.6 g/cm) in units of kg/m³. 17) The daily dose of antibiotic for the treatment of an ear infection is 115 mg/kg of body weight. If the antibiotic tablets are available in 250. mg size, calculate the number of tablets that a 33.5 lb. child must take per day. 1 1

A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of carbon tetrachloride, diethylamine, pentane, acetone, and tetrahydrofuran. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density - 3 1.6 g·cm carbon tetrachloride diethylamine - 3 0.71 g·cm pentane 3 0.63 g cm 3 0.79 g cm acetone tetrahydrofuran - 3 0.89 g cm Next, the chemist measures the volume of the unknown liquid as 1.427 L and the mass of the unknown liquid as 894. g. Calculate the density of the liquid. Round 3 your answer to 3 significant digits. |lg.cm Given the data above, is it possible to identify the liquid? yes no carbon tetrachloride diethylamine If it is possible to identify the liquid, do so. pentane acetone tetrahydrofuran

• Stock solution: 1000 mg/L Target sample concentrations: 50-400 mg/L • Create a 5-point standard dilution to cover the test • If each test only needs 10 mL, make plans to make the dilution so you have 20 mL of each concentration. ·

Part A transcript When glucose (C6H12O6 (s)) is consumed, it reacts with O₂ gas in the body to produce gaseous carbon dioxide and liquid water. Enter the balanced chemical equation for the reaction. Express your answer as a chemical equation including phases. 0 ΑΣΦ ? A chemical reaction does not occur for this question. Submit Previous Answers Request Answer

Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical formula C8H9NO2. Ibuprofen has the chemical formula C13H18O2. Paracetamol has the chemical formula C8H9NO2.