Answers edited by mrpauller.weebly.com

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• How many atoms can hydrogen bond with carbon?
  
• Question #49ca9
  
• What is the average atomic mass of bromine? One isotope of bromine has an atomic mass of 78.92amu and a relative abundance of 50.69%. The other major isotope of bromine has an atomic mass of 80.92amu and a relative abundance of 49.31%.
  
• What is the oxidation state of chromium in the dichromate ion, #"Cr"_2"O"_7^(2-)#?
  
• How many valence electrons does sodium have?
  
• What is the molality when 0.75 mol is dissolved in 2.50 L of solvent?
  
• Question #fb599
  
• Question #2d9c7
  
• How can I find the limiting reagent?
  
• What are the branches of chemistry and their definition?
  
• What are metal activity series?
  
• Question #a146b
  
• What is the chemical formula for the ionic compound formed when elements of Ca and N react?
  
• Question #a47f7
  
• How many valence electrons does hydrogen have?
  
• What is the structure of an atom?
  
• Question #6de0b
  
• Why does the bonding of oxygen and hydrogen result in a polar molecule and hydrogen bonds?
  
• Why is hydrogen included in the metal activity series?
  
• Question #79c2b
  
• How does polarity affect chromatography?
  
• What is an example of a heat capacity practice problem?
  
• What is density?
  
• How do we determine the limiting reagent, and the reagent in excess?
  
• How can osmosis affect a cell?
  
• Question #dc373
  
• Why must Charles' law be in kelvin?
  
• What do oxidation reduction reactions involve?
  
• Question #47f05
  
• How do density and buoyancy relate?
  
• How can gas pressure be defined at a molecular level?
  
• Question #47500
  
• What quantum numbers specify a 3p orbital?
  
• What does scientific notation mean?
  
• Question #f421c
  
• How do you convert SI units?
  
• How do you calculate pH from acid dissociation constant?
  
• What mixtures can be separated by chromatography?
  
• What is a redox reaction?
  
• Why does the octet rule exist?
  
• How can polarity of molecules be predicted from their geometry?
  
• How do you balance the chemical equations for double replacement reactions?
  
• How do isotopes relate to average atomic mass?
  
• What is the difference between STP and NTP?
  
• What is a net ionic equation?
  
• What are functional groups?
  
• Question #bc1f7
  
• Question #13970
  
• Why is freezing an exothermic process?
  
• What is the metal activity series used for?
  
• How does scientific notation work?
  
• How do you calculate the total number of protons and electrons in a polyatomic Ion. Do you have to memorize it?
  
• Question #dc389
  
• Question #bf67e
  
• What are enzymes?
  
• How is chemistry related to mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)?
  
• How does a limiting reagent affect how much product is formed?
  
• Question #a2290
  
• How can I create a least squares regression line in Excel?
  
• Question #e331a
  
• Question #0f5dc
  
• What are some examples of electron configurations?
  
• What is the chemical equation for cellular respiration?
  
• Question #8c06a
  
• What happens in a single displacement reaction?
  
• Question #337a5
  
• Why are ionic compounds solid at room temperature?
  
• How does ionic bonding work?
  
• What is the vsepr model for CHCl3?
  
• Is the dissolution of sodium chloride in water a physical or chemical change?
  
• What is the nomenclature for nitric acid?
  
• How can I name ionic compounds with three elements?
  
• How can percent composition be calculated?
  
• How do you measure concentration from absorbance?
  
• How can I calculate the percent composition of magnesium oxide?
  
• Question #2ba47
  
• When does a single replacement reaction occur?
  
• Commercially available concentrated sulfuric acid is 18.0 M H2SO4. What volume of concentrated H2SO4 would I use in order to make 3.00 L of a 4.0 M stock solution?
  
• Question #c5c10
  
• How do you handle significant figures in multi-step calculations?
  
• Why is vsepr theory important?
  
• What is a chemical change?
  
• Which of the following molecules may have hydrogen bonds between other molecules of the same kind? CH3F, CH3NH2, CH3OH, CH3Br
  
• How are metals named in an ionic compound?
  
• Question #b985b
  
• How can I write nuclear equations for alpha decay?
  
• What are quantum numbers?
  
• How does pH relate to concentration?
  
• What type of mixtures can be separated by filtration?
  
• What is a physical change?
  
• What law is satisfied by a balanced chemical equation in chemistry?
  
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