The answer to question 7 Periodic Table of the ElementsPuНеLi BeBNONeNa MgSi P s Ci ArvinCr Mn Fe Co Ni Cu Zn Ga Ge As Se Br KrRb Sr Y zr Nb Mo Te Ru Rh Pd Ag cd in Sn Sb TeH ta w Re os ir Pt Au Hg Pb Bi Po At RnDb So Bh Hs Mi Ds Rg Cn Nh Fl Mc Lv Ts ogCa Sc Ti VŽnXeCs BaFr RaLa Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb LuAc Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr1. Solids, liquids, and gases are the three most commonly acceptedphases of matter. Explain the properties of each phase, includingtheir relative energy.Explain the differences between an ideal gas and a real gas.3. Explain the process of sublimation. Name one substance thatsublimes at room temperature and pressure.4. The mole is a counting number that allows scientists to describehow individual molecules and atoms react. If one mole of atomsor molecules is equal to 6.022 × 1023 atoms or molecules, howmany molecules are in a 23.45 g sample of copper (II)hydroxide, Cu(OH)2? Express your answer to the correct numberof significant figures. (MM of Cu(OH)2 is 97.562 g/mol). Besure to show all steps completed to arrive at the answer.. The density of water at 4.00°C is 0.967 g/mL. How manymolecules of water are present in a 499.8 mL bottle of water?Express your answer to the correct number of significant figures.Be sureshow all steps completed to arrive at the answer.6. A manufacturing company is trying to produce a lightweight butstrong cart for use by home gardeners. Explain which metal-titanium (Ti), iron (Fe), or zinc (Zn)–would be the best for thisapplication and why?.Combustion reactions are a notable source of carbon dioxide inthe environment. Using the following balanced equation, howmany grams of carbon dioxide are formed when 100.00 g ofpropane (C3H8) is burned? Express your answer to the correctnumber of significant figures. Be sure to show all stepscompleted to arrive at the answer.C3Ha + 502 -3C0, + 4H,O

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7. Combustion reactions are a notable source of carbon dioxide in the environment. Using the following balanced equation, how many grams of carbon dioxide are formed when 100.00 g of propane (C3H8) is burned? Express your answer to the correct number of significant figures. Be sure to show all steps completed to arrive at the answer. CH, + 502 3C0, + 4H,0