Assume that a mixture of CO2, H2O, citric acid, and sugar must be separated. What are the separation techniques (example: distillation, filtration, etc.) to separate the the given compounds individually.

Lighters typically contain butane (C4H10), which has a molar mass of 58.12 g/mol. Consider that there may have been a mixture of hydrocarbons present in the lighter. If the experimentally obtained molar mass of this mixture was 56.1 g/mol, what other hydrocarbons may have been present? Choices include: CH4 (methane), C2H6 (ethane), C3H8 (propane), C5H12 (pentane), C6H14 (hexane), C7H16 (heptane), or C8H18 (octane). Explain.

Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 67.31 % carbon, 6.978% hydrogen, 4.617% nitrogen, and 21.10% oxygen by mass.     Which of the compounds could the powder be? C17H19NO3C17H19NO3 = morphine, analgesic C17H21NO4C17H21NO4 = cocaine, illicit drug C7H5N3O6C7H5N3O6 = 2,4,6-trinitrotoluene (TNT), commonly used explosive C10H15NC10H15N = methamphetamine, stimulant C4H5N2OC4H5N2O = caffeine, stimulant C11H15NO2C11H15NO2 = 3,4-methylenedioxymethamphetamine (MDMA), illicit drug C21H23NO5C21H23NO5 = heroin, illicit drug C3H6NO3C3H6NO3 = hexamethylene triperoxide diamine (HMTD), commonly used explosive

You are given pure serine in powder form, and you are asked to make exactly 20 mL of a 20 μM solution. How much serine powder (in μg) would you need to make such a solution? For this problem, assume that carbon has molar mass of 12 amu, hydrogen 1 amu, nitrogen 14 amu, oxygen 16 amu, and sulfur 32 amu. You must compute the molecular weight of serine after drawing it; do not look up the molecular weight on google. Show your unit conversion fully step by step

ᴍᴇᴛʜᴀɴᴇ ɪꜱ ʙᴜʀɴᴇᴅ ᴄᴏᴍᴘʟᴇᴛᴇʟʏ ᴡɪᴛʜ 25% ᴇxᴄᴇꜱꜱ ᴀɪʀ. ᴄᴏᴍᴘᴜᴛᴇ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏꜰ ᴍᴏʟᴇꜱ ᴏꜰ ɴɪᴛʀᴏɢᴇɴ ɪɴ ᴛʜᴇ ᴘʀᴏᴅᴜᴄᴛꜱ ᴏꜰ ᴄᴏᴍʙᴜꜱᴛɪᴏɴ ᴘᴇʀ ᴍᴏʟᴇ ᴏꜰ ꜰᴜᴇʟ.

2. In Alice's Wonderland, every element is different from those in our world. There is a pure unknown compound that consists of element 2 (atomic mass: 22.01 amu) and clement ¥ (atomic mass: 3.13 amu). After elemental analysis of the compound, you discovered that it consists of 70.1 wt. % of clement N and 29.9 wt. % of element V. Answer the following questions. A. What will be the empirical formula of the compound? B. What will be the molecular formula of the compound if the molecular mass of the compound is 94.2 amu?

Part A. What is the mass of 9.50 moles of magnesium chloride, MgCl2? Express your answer with appropriate units. Part B. How many moles of nitrogen, N, are in 76.0g of nitrous oxide, N2O? Express your answer with the appropriate units.

You are given a 15.0 g mixture. You find out that the mixture contains 3.55 g salt, 4.78 g sand and the rest is Iron. According to these data, what is the percent of iron in the mixture? O 55.5% O 6.67% O 44.5% 15,0%

5. Epsom salt is commonly purchased in the pharmacy for a variety of uses, anti-inflammatory, laxative, and cosmetic. Epsom salt is a hydrated salt of magnesium sulfate. If 2.000 g of Epsom salt are heated to remove the waters of hydration, 0.977 g of the anhydrous (without water) magnesium sulfate, MgSO4, were obtained. Calculate the number of waters of hydration, and write the chemical formula of the Epsom salt.

Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically isolated molecular chlorophyll compounds are named as "Chlorophyll X" (where "X" is a variable denoting the actual molecular fragments which are represented by the labels R2, R3, R7, Rg, R17). Suppose one molecule of ChlorophyllX contains 5 oxygen atoms, and Chlorophyll X is 13.14 % oxygen by weight. Using only this information and the atomic mass of oxygen, determine the molecular mass of Chlorophyll X. The Chlorophyll X molecule contains one magnesium atom. What mass of magnesium is found in 7.11 g of Chlorophyll X compound?