Fe= 55.15 o=16.08 N= 14.11g give molecules, atoms and ions in .650moles of Fe(NO2)2 please show work and sig figs

An experiment requires that enough C6H12O6 be used to yield 17.2g of oxygen .How much C6H12O6 must be weighed out?

Anhydrous CuSO4 is converted to CuSO4 · XH20 to absorb water from certain liquids. What is the value of x if 24.3 g of anhydrous CusO4 is required to remove 13.7 g H20 from a gallon of gasoline? Type your answer (must be a whole number) below. Relative atomic masses: H = 1.008; 0 = 15.999; S = 32.06; Cu = 63.546 Your answer: CuSO4 • H20

Please answer and show your work for both sub parts 4a and 4b   C5H12 + O2 → CO2 + H2O       Atomic masses:  C = 12.01, H=1.01, O=16.00, N=14.01 4a. How many mols of water are contained in a glass that holds 255 grams of water?   4b.  How many molecules of water are contained in the glass in 4a?

Show your work and report your results with the corre figures. 8008. 1. Calculate the mass percent of calcium in CASO4.

Calculate the number of atoms of hydrogen (H) in 470. cm3 of the colorless gas ethene at 0 °C and atmospheric pressure, where its density is 1.25x103 g cm 3. The molecular formula of ethene is C,H4. H atoms Submit Answer Retry Entire Group o more group attempts remaining

An antacid tablet weighing 0.928 g contained calcium carbonate as the active ingredient, in addition to an inert binder. When an acid solution weighing 56.408 g was added to the tablet, carbon dioxide gas was released, producing a fizz. The resulting solution weighed 57.134 g. How many grams of carbon dioxide were produced? Calculate (to the nearest 0.1 u) the formula mass of these compounds. (a) rubidium nitrate, RbNO3  u(b) carbon tetrachloride, CCl4  u(c) boron trifluoride, BF3