Answers created by Shulgin

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• How do dipole-dipole forces cause molecules to be attracted to one another?
  
• What is the molecular structure of #H_2O# ?
  
• What are all the functional groups in penicillamine?
  
• What is different between an ionic bond and a covalent bond?
  
• What how do you find a pressure at STP and SATP?
  
• How many unpaired electrons are in a sulfer atom?
  
• What is the difference between an isotope and an element?
  
• What is the strongest structure that a substance can be?
  
• Is water comprised of functional groups, OH?
  
• What are some examples of ionic compounds?
  
• 1.An acid was analysed and found to contain 2.44% hydrogen,39.02% sulphur and 58.54% oxygen.find imperical formular of the Acid?
  
• How many atoms are in 0.50 moles of sulfur?
  
• Why is #N_2# a nonpolar covalent bond?
  
• What type of chemical bond results from the attraction between a metal cation and a nonmetal anion?
  
• What does the R in PV=nRT represent?
  
• What is the electronic configuration of #"Cl"^(-)#?
  
• Are these a colloid, suspension, or solution?
  
• How do I round off 0.0505 ?? Please Explain, Thank you
  
• How can you identify a suspension?
  
• What does homogeneous suspension mean?
  
• What are the key features of a water solution?
  
• Please solve the q 92?
  
• How can you determine whether a molecule is an enantiomer?
  
• Nitrogen (N) and hydrogen (H) react wth each other to produce ammonia (#NH_3#). This reactor is shown in an equation as #N_2 + 3H_2 -> 2NH_3#. What is the ratio of nitrogen atoms to hydrogen atoms in ammonia?
  
• How to find the theoretical yield for two solid reactants?
  
• What does an R-Squared value show?
  
• How do you determine a nucleophile or a base?
  
• Easiest method for decreasing the concentration of a solution?
  
• What is poor shielding effect?
  
• For a doublet of doublet, how many neighbors does it have?
  
• What are SN2 reactions?
  
• What is an SN2 reaction?
  
• How can I determine SN2 or SN1?
  
• What is the structural formula for propene?
  
• Why is an sn2 reaction faster than an sn1 reaction?
  
• How does the mass spectrometer work?
  
• How do you rank SN1 reaction rates?
  
• What is the oxidation number of S in H2SO3?
  
• What is the oxidation state of S in #S_2O_3^-2#?
  
• What is the oxidation number of iron in #Fe_2O_3#?
  
• How do I find the P-value for a right tailed test with n = 19 and t = 2.599?
  
• What is 1/3 as percentage?
  
• How far does light travel in the following time spans: 4.0 days and 8.0 yr?
  
• How do I find the z-score of numbers that go above what's in the table?
  
• Tell how you would prepare a 500.0mL of 0.50 M ammonium carbonate solution? Include all necessary equipment and amount of chemical (in grams).
  
• What are the different kinds of f orbitals?
  
• Suppose you deposit $400 in a savings account. If the interest rate is 5% per year, what is the interest earned in six years?
  
• Are DEPT techniques important for structural elucidation?
  
• Is #"F"^(-)# a Lewis acid?
  
• How does distillation separate mixtures?
  
• Is #H_2N# the amino functional group?
  
• What is shielding effect in NMR?
  
• What is the IUPAC name of the compound?
  
• Can some one help me with this question ??
  
• What is mass number?
  
• How do you use the VSEPR theory to predict the molecular shape of #SO_2#?