Answers edited by Aditya Banerjee.

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• #K_a# for #HCN# is #5xx10^(-10)# at a certain temperature. For maintaining a constant #pH# of #9#, what is the volume of #5M KCN# solution required to be added to #10#ml. of #2M HCN#?
  
• How do you solve # 7q - 25= - 2q#?
  
• Question #da3f8
  
• Why would fluorine have a positive oxidation state in #"HOF"# even though it is more electronegative?
  
• Why are valves important in the heart?
  
• Question #f59a9
  
• How do you solve #|x ^ { 2} + 2x - 24| = 24#?
  
• How do you draw #sp^2# orbitals?
  
• How does the solar system affect our lives?
  
• Why Ncl5 is an unlikely structure?!?!
  
• What is the reciprocal of -2/3?
  
• What is the mass of 0.175 moles of phosphorus?
  
• Question #d8f28
  
• Question #183f1
  
• Question #7001d
  
• Carbon atoms have four electrons in their outer shell. This means that a single carbon atom can form up to how many bonds with other atoms?
  
• How do you find the solution to #25cos^2theta-4=0# if #0<=theta<360#?
  
• Question #4db5a
  
• Are #B-F# and #B-I# polar?
  
• The valence shell of the element X contains 2 electrons in a 5s subshell. Element X also has a partially filled 4d subshell. What type of element is X?
  
• How do you solve #(5x+1)^2=25#?
  
• How do you write the standard form of the hyperbola #-x^2+y^2-18x-14y-132=0#?
  
• Question #870b3
  
• Question #f1e48
  
• Question #c94ab
  
• What are the points of inflection of #f(x)=x^2e^(sqrtx)-x^(1/2)e^(x^2) #?
  
• How do you find the derivative of the function #f(x)=x+sqrtx#?
  
• How do you write the equation of the line with slope 2/3 through the point (-3, -7) in slope-intercept form?
  
• Question #81a9b
  
• Question #a66dc
  
• How do you write the equation of the line that passes through the points (1, 7) and (5, 15) using function notation?
  
• How do you solve #-5- x = - 3#?
  
• What does the lock and key hypothesis state?
  
• What are the reducing agent and the oxidising agent in the chemical equation below? CH4 + Cl2 = CH3Cl + HCl
  
• How do you solve #10= 2e ^ { 5x }#?
  
• Why is the sigma bond strong?
  
• A pair of dice is rolled. A possible event is rolling a sum that is a multiple of 5. What is the probability of the complement of this event?
  
• How do you differentiate #f(x)=sqrt(1-(3x-3)^2# using the chain rule.?
  
• A 50 N force gives an object an acceleration of 2.5 m/s^2. If the force is suddenly reduced to 20 N, what is the new acceleration?
  
• Which of the following is true? |−6| < 5 |−6| < |5| |−5| < |−6| |−5| < −6
  
• What is the combined number of protons and neutrons called?
  
• Question #29461
  
• How do you simplify #8\sqrt { 50c ^ { 6} }#?
  
• If #a/(x-2)+b/(x+3)=(2x+11)/(x^2+x-6)# then (a,b) = ?
  
• Question #5c771
  
• If #a+1/a=2# what is #a^5+(1/a)^5#?
  
• If #sin^-1(x) +sin^-1(y)=pi/2#, then what will #dy/dx# be?
  
• What are the measures of two complementary angles are 7x+17 and 3x-20?
  
• How do you simplify #3sin4x + 3sin4x #?
  
• Question #81a9b
  
• How many 6 digit combinations can i get using numbers 1-49?
  
• How do you find the distance between (4,2.5) and (2.5,3)?
  
• Question #ab1ff
  
• How do you solve #59= 7- 4m#?
  
• An object in static equilibrium has a coefficient of static friction as 0.110. If the normal force acting on the object is 95.0 newtons, what is the mass of the object?
  
• According to VSEPR theory, what is the shape of the #PH_3# molecule best described as?
  
• What is the oxidation state of #S# in #SO_3^(2-)#?
  
• If an organism has a diploid number of 64, what is the haploid number?
  
• A coin is flipped 12 times. What is the probability of getting exactly 8 heads?