lodine exists as molecules of 12, and silicon dioxide exists as an extended network of silicon-oxygen bonds (similar to diamond). They both are solids at room temperature, but which do you think has the higher melting point and why? 1. 12 because it is heavier and therefore has the largest LDFs. 2. 12 because it an element. 3. Silicon dioxide because to melt it you would have to break covalent bonds. 4. Silicon dioxide, because it is a compound and has stronger intermolecular forces than iodine molecules.

fine moles of hcl in 0.4488g

please answer all :(

An extra strength Tylenol caplet contains 500 mg of acetaminophen (C8H9NO2) as one of its active ingredients. caplets How many Tylenol caplets will contain 0.050 mol of acetaminophen? a. How many acetaminophen molecules do three caplets contain? molecules

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What is the percent composition of nitrogen in ammonium nitrate

Make an individual table for each and every one of the following (7) molecules: 1. urea, (NH2) 2CO 2. ethyl thiomethyl ether, CH3SCH2CH3 3. ethyl chloride carbonate, CH3CH2OCOCl 4. trimethyl phosphite, (CH3O)3P 5. vinyl magnesium bromide, CH2CHMgBr 6. Cesium 2-hydroxyacetate, HOCH2CO2Cs 7. C4H8Br2 (an isomer).

Hydrates Using the QR code, watch the video long enough to write the definition of a hydrate. Draw a picture of a hydrate right by your definition. 1. Aydhrofes ane solid componds which contan water Definition: 2. Anhydrous = tice Problems During lab, 1.04g of NISO, * H,O were heated. After heating, only 0.61 g of VisO, remained. What was the formula of the original hydrate? biae e formula and name of a hydrate that is 86.7g of Mo,S, and 13.3

What is the molar mass (GFM) of Ca(s)? 35.5 g/mol 12.2 g/mol 80.2 g/mol 40.1 g/mol

1. Give reasons why the helium atom is smaller than the cesium atom. 2. A student got a problem wrong.  They were asked, “How many grams of MgCl2 (molar mass = 95.21 g/mol) are needed to make 3.16 L of a 0.500 M MgCl2 solution?”  The correct answer is 150. but the student got 1.58.  What mistake did the student make? 3. To solve the following problem what is the reason you must subtract the vapor pressure of water, 24 torr, from the total pressure, 747 torr in order to solve the problem? “A 500.0-mL sample of H2 gas is collected over water at 298 K and 747 torr.  What volume would the dry H2 gas occupy at STP?  (Given: the vapor pressure of water at 298K is 24 torr).” By the way, the answer is .436 liters. NOTE:  I am not asking you to solve this problem.  I am asking the reason for subtracting the vapor pressure.  If you simply solve the problem, you will get no points.