Answers created by Edmund Liew

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• How many moles of potassium chlorate must be used to produce 6 moles of oxygen gas?
  
• What is a halogen atom?
  
• Can you help me balance this equation? As2S3 + K2Cr2O7 + H2SO4 = H3AsO4 + K2SO4 + Cr2(SO4)3 + H2O + SO2
  
• Question #85ee6
  
• How many moles of #NH_3# are produced when 18.5 grams of #N_2# gas reacts with excess #H_2# gas?
  
• What is the chemical formula for a dinitrogen trioxide molecule?
  
• How do you simplify #\frac{6}{6}\times \frac{3}{2}#?
  
• Question #7639c
  
• 8.5% of 5000 is what number?
  
• What is the molar mass of #Al(C_2H_3O_2)_3#?
  
• During a reaction, baking soda (#NaHCO_3#) is combined with calcium chloride (#CaCl_2#) in water. What is the balanced chemical equation for the reaction that occurred?
  
• Question #6cce1
  
• How many grams are there in 4.50 moles of #Ba(NO_2)_2#?
  
• How do you solve #y- ( - 22) = 63#?
  
• What is the formula for nitrogen dioxide?
  
• How do you solve #1.4x + 6.1= - 7.9#?
  
• How do you determine the atomic mass of an element?
  
• What is the molar mass of table salt (i.e. sodium chloride)?
  
• What is the percentage metal by mass in magnesium oxide?
  
• How do you solve #50- x - ( 3x + 2) = 0#?
  
• Seven times a number is the same as 12 more than 3 times the number. How do you find the number?
  
• Do metals have high electronegativity?
  
• How do you expand #(5y^4-x)^3#?
  
• Why do ionic bonds conduct electricity?
  
• How does ionic bonding affect conductivity?
  
• How do you convert 1000 g to kg?
  
• How do you add #204.965 +55.8#?
  
• What are the products of Potassium iodide + lead nitrate?
  
• How many people in Indonesia died in the tsunami and earthquake of Dec. 26, 2004?
  
• How many grams of #O_2# are in 5.0 mol of the element?
  
• What is the molar mass of lithium oxide, #Li_2O#?
  
• How many moles of oxygen gas will be formed from 6.45 g of potassium chlorate?
  
• What is #24+64#?
  
• How do you balance #P_4 + O_2 -> 2P_2O_3#?
  
• Is the equation #2C_8H_8 + 25O_2 -> 8CO_2 + 18H_2O# completely balanced?
  
• What is the name of #AlCl_3#?
  
• According to collision theory, what happens in a reaction without sufficient energy or correct orientation?
  
• What is an earthquake's magnitude?
  
• What type of reaction produces a precipitate?
  
• How do you solve empirical formula calculations?
  
• What is the molecular formula of a compound if its empirical formula is #CFBrO# and its molar mass is 381.01 g/mol?
  
• How do you simplify #4y^4 + 3y^2 + y^4#?
  
• Which is the formula mass of #Na_2SO_4#?
  
• What is the name of the compound whose formula is #H_2SO_4#?
  
• How do you find the formula mass of ammonium carbonate #(NH4)_2CO_3# ?
  
• What is collision theory?
  
• When was the biggest earthquake recorded in earth's history? Where was it? How strong was it?
  
• How much water is formed when 1.0 mol of #HCl# reacts completely with 1.0 mol of #NaOH#?
  
• Question #2a7bc
  
• What is the name of the highest active volcano in the world?
  
• How do you calculate the number of moles in 0.135 grams of #HNO_3#?
  
• How many molecules are present in 1296 g of dinitrogen pentoxide #N_2O_5#?
  
• How many grams are contained in 3.22 moles of dinitrogen tetroxide?
  
• How many grams are in 17.83 moles of carbon dioxide?
  
• Question #199ec
  
• Given the balanced equation, #2SO_2 + O_2 -> 2SO_3# , what is the molar ratio of #O_2# to #SO_3#?
  
• How can an empirical formula be interpreted?
  
• How many grams are contained in 2.00 mol of neon?
  
• What is the formula mass of ammonia?
  
• How do acids affect litmus?
  
• What is the mass of 4.50 mol #Fe#?
  
• Question #c7ba8
  
• For the reaction represented by the equation #N_2 + 3H_2 -> 2NH_3#, how many moles of nitrogen are required to produce 18 mol of ammonia?
  
• Question #c67b3
  
• What are the layers of the earth made of?
  
• How many moles are in 200 grams of fluorine?
  
• How do you calculate the empirical formula of a compound formed from 3% #C#, 0.3% #H#, and 96.7% #I#?
  
• What is the percentage of lithium in lithium carbonate #Li_2CO_3#?
  
• How do you simplify # 2a * -a#?
  
• How do you solve #-4b = 15#?
  
• What are three types of plate boundaries where volcanic eruptions can occur?
  
• Question #7be8c
  
• How many hydrogen atoms are in each formula unit of calcium bicarbonate #Ca(HCO_3)_2#?
  
• How many grams of sodium is present in 2 moles?
  
• How many grams of #Fe_2O_3# are there in 0.500 mole of #Fe_2O_3#?
  
• How many grams of hydrogen are necessary to react completely with 50.0 g of nitrogen in the reaction #N_2+3H_2->2NH_3#?
  
• What is percent composition of ethanol ( #C_2H_5OH# )?
  
• How do you write #8times10^6# in standard form?
  
• If 3.00 moles of #H_2O# are produced, how many grams of hydrogen gas are used?
  
• What is the standard form of #y= (x+7)(x-8)^2 #?
  
• How do you calculate empirical formula of a compound?
  
• Why might an an earthquake have more than one intensity value? Where would the higher value be found and why?
  
• How does the build-up of stress in the earth's crust result in an earthquake?
  
• Where do Earth's plates slide past each other?
  
• How do you write #8.5 times 10^3 # in standard notation?
  
• In the reaction #Fe_2O_3 + 3CO -> 2Fe + 3CO_2#, what is the total number of moles of #CO# used to produce 112 grams of iron?
  
• What is the molecular formula of a compound if its empirical formula is #NO_2# and its molar mass is 138.02 g/mole?
  
• What is the number of grams in 7.19 moles of #BaSO_4#?
  
• How does acid affect teeth?
  
• How much work does it take to raise a #7 kg # weight #36 m #?
  
• A train covers 60 miles between 2 p.m. and 4 p.m. How fast was it going at 3 p.m.?
  
• What is the role of DNA?
  
• What are the advantages of sexual and asexual reproduction?
  
• How do you simplify #4 + 6 (3m + 2)#?
  
• What is the number of moles in .197 g #As_2O_3#?
  
• Question #8b7ec
  
• How do you factor completely # 2x^2 + 36x + 162#?
  
• What is the formula mass for sulfur dioxide?
  
• How does a base differ from an acid?
  
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