Questions asked by ruthvera

• Back to user's profile
• In what temperature water is Carbon Dioxide's acidity the highest? Chilled ocean water or room temperature ocean water?
  
• How many grams of sugar would you need to add to water to make 235 grams of a 7% solution? using this formula: (Please Help!)
  
• Answer this question with sig figs: 100 + 10.1 + 0.01=?
  
• Question: Solve: 3.12g + 0.8g + 1.033g (with significant figures) Answer: 5.0 (Look at the image below: Why is C Correct?) WHY IS THIS RIGHT? i thought it was A?
  
• How come ionic bonds do not conduct electricity and metallic bonds do?
  
• Expand this logarithmic equation (using properties) : #ln(sqrt(x-5)/y^2)# how do i do this?
  
• A) predict the products and write the balanced equation including states of matter b) state the type of equation? SODIUM CHLORIDE
  
• Do we write net ionic equations only when there is a solid in the products?
  
• Do we write net ionic equations only when there is a solid in the products? Balanced: Mg (s) +2HCL (aq) --> MgCl_2 (aq) +2H(g) Is it possible to write the net ionic of the formula above? If yes what would it be?
  
• Chlorine gas + aqueous calcium iodide produces what?
  
• Convert 0.7712 moles of oxygen to liters with sig figs. HELP?!
  
• #r^3=27/8# How do you solve for r?
  
• Which of the following is a negative integer if i= #sqrt(-1)#? A) #i^24# B) #i^33# C) #i^46# D) #i^55# E) #i^72#
  
• If f(2)=0 and f(-1)=0 then which of the following must be a factor of f(x)? a) x+2 b) x-1 c)#x^2+x-2# d) #x^2-x-2# e) none of these
  
• If #f(x)=x+1# and #(f@g)(x)=x^2+3x+2#, which of the following is g(x)?
  
• If the pendulum of a clock swings through an angle of 2.8 radians and the length of the arc that its tip travels is 40, the length of the pendulum is what?
  
• If the points (3,7), (1,k) and (-1,1) are collinear, what is the value of k?
  
• Is #ln(x) +ln(x)# the same thing as #ln(x^2)# or #2ln(x)#????
  
• What is the difference between a strong acid and a weak acid as well as a strong base versus a weak base with regards to ionization?
  
• What does the brackets around [H+] and [OH-] represent and what does it do?? (this is in context to acids and bases)
  
• What is the limit of #7/4(x-1)^2# as x approaches 1?
  
• What is the limit of #7/(4(x-1)^2)# as x approaches 1?
  
• Eight cars, each of a different color (red, blue, black, grey, white, green, tan, gold), travel one behind the other to a campground, The red car must lead and the green car must be last. How many different orderings of the cars are there?
  
• The number of birds on each of the islands X and Y remains constant from year to year; however, the birds migrate between islands. After one year, 20 percent of the birds on X have migrated to Y, and 15 percent of the birds on Y have migrated to X. ?
  
• If #f(2x+1)=2x-1# for all real numbers x, then #f(x)# = ?
  
• #log (a^2-b^2)# can also be written as what? (look at choices below)
  
• Solve #i^14 + i^15 + i^16 + i^17=# ?
  
• What does it mean if a molecule is polar?
  
• There are 8 members of the women’s basketball team and 7 members of the men’s track team at an athletic club meeting. What is the probability that a committee of 3 selected at random will have at least 2 members of the basketball team?
  
• What is the overall term for covalent, ionic and metallic bonds? (for example dipole, hydrogen and london dispersion bonds are called van der waal forces) and also what is the difference between covalent, ionic and metallic bonds and van der waal forces?
  
• What is the reciprocal of #6+i#?
  
• #root(3)(20x^2y^7)*root(3)(50x^4y^2)# = ?
  
• If #(x-1)^(2/3) =25# then x equals what?
  
• A cube has edges of length 3. If P and Q are points on its surface, what is the maximum straight-line distance from P to Q?
  
• The value of #sin(2cos^(-1)(1/2))# is what?
  
• What is the limit of this function as h approaches 0? #(h)/(sqrt(4+h)-2)#
  
• #cos^2(2x)+sin^2(2x)=?# what value is this equal to?