Answers edited by Soumalya Pramanik

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• In the equation, Fe2O3 + 2Al → Al2O3 + 2 Fe, if 52.6 g of aluminum are used with excess iron oxide, how many grams of Fe2O3 will be converted to aluminum oxide?
  
• If the length of the equal two sides of a isosceles triangle is 20 cm and the angle between those two sides is 45 degrees, then what is the area of the triangle?
  
• How do you solve #-16x ^ { 2} = 12x ^ { 2} + 24x + 5#?
  
• A rectangular garden has an area of 120 square feet. If the width of the garden is 2 less feet than the length of the garden, what are the width and length of the garden?
  
• How do you rationalize the denominator and simplify #( 3sqrt6 + 5sqrt2)/(4sqrt6 - 3sqrt2)#?
  
• How do you solve #c- 14\geq 2#?
  
• Question #230b9
  
• The energy required to break one mole of Cl - Cl bond is #"242 kJ/mol"#. What is the longest wavelength of light capable of breaking a single Cl - Cl bond? (take #c = 3 xx 10^8# #"m/s"# and #N = 6.022 xx 10^23# #"mol"^(-1)#)
  
• Difference between Co-Factors and Co- enzymes?
  
• How do you convert #(5pi)/12# into degrees?
  
• Barbie is thinking of a number. Twenty less than one-third of the number is 72. What is Barbie's number?
  
• How do you use the quadratic formula to find the solutions of #x^2-21=4x# ?
  
• Question #9fe7c
  
• Question #2a70b
  
• A dancer lifts his partner above his head with an acceleration of 1.5 m/s. The dancer exerts a force of 575 N. What is the mass of the partner ?
  
• How do you verify the identify #sintheta/csctheta=sin^2theta#?
  
• Question #7acfa
  
• If the two equation x^2+ax+b=0 and x^2+bx+a=0 have a common root,show that other roots are the roots of the equation x^2+x+ab=0?
  
• How do you factor completely #5x^2-5x-100#?
  
• The 4th and 8th term of an ap is in ratio 1:2.the tenth term is 30.find the common difference?
  
• Solve this equation. what is the answer ? have m by it self (-9)(-9)4 = m
  
• During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with what bases?
  
• Question #e2433
  
• A jeep chases a thief with a constant velocity #v#. When the jeep is at distance d from the thief, he starts to run with a constant acceleration #a#. Show that the police will be able to catch the thief when #v >= sqrt(2ad)#?
  
• Question #98339
  
• A 20. kilogram object strikes the ground with 1960 joules of kinetic energy after falling freely from rest. How far above the ground was the object when it was released?
  
• Question #cde93
  
• Question #7c97b
  
• How do you solve #\frac { b } { 13} - \frac { 3b } { 13} = \frac { 8} { 13}#?
  
• How do you convert 225 degrees into radians?
  
• Question #b585f
  
• The nucleotide sequence of one DNA strand of a DNA double helix is 5-ʹGGATTATTGTGCACTTTCA-3ʹ. What is the sequence of the complementary strand and briefly explain the answer?
  
• What weight of magnesium will dissolve in 10 cm^3 of 1 mol/dm^3 HCl and what volume of hydrogen will be produced? Thanks in advance!
  
• 3.01e22 Ag+ ions is present in? options a) 85 grams of AgNO3 b) 0.85g AgNO3 c) 8.5g AgNO3 d) 18.5g AgNO3
  
• What are the group 18 elements called?
  
• How do you prove: #Cosx + sinx tanx = secx#?
  
• Question #ca751
  
• What is the wavelength of this light?
  
• If an element has atomic number 9 and atomic mass 19, how many neutrons will it have?
  
• Question #844e5
  
• Question #05787
  
• How to do you graph #y=1/3x+2# by plotting points?
  
• Question #c9a3b
  
• How do you verify #tanx / (1-cosx) = cscx (1+secx)#?
  
• How do I find the value of #log 1000#?
  
• Question #a511c
  
• How do you solve #27x ^ { 2} - 55x + 2= 0#?
  
• If an object is raised four times as high, how is its gravitational interaction (potential) energy affected?
  
• If sodium iodide and calcium are mixed together, what are the resulting products?
  
• How do you solve the following system?: #8x +6y =9 , - 5x -7y = -2#
  
• Question #993ff
  
• What does exothermic mean?
  
• What is meant by the term one mole of molecules?
  
• When catching cricket ball, we pull our hands back. why?
  
• Solving Systems...I'm Stuck?
  
• A triangle has corners at points A, B, and C. Side AB has a length of #24 #. The distance between the intersection of point A's angle bisector with side BC and point B is #8 #. If side AC has a length of #18 #, what is the length of side BC?
  
• What is the energy in Joules of a single photon with wavelength of 154 nm?
  
• How to solve q 92 on the sides and angles of a polygon.?
  
• Question #36757
  
• What are the products from the Reaction of water and sulphuric acid?
  
• Five importances of nitrogen cycle ?
  
• How do you find the protons, neutrons, and electrons for a Bromine (#1^-#) anion with a mass number of 80?
  
• Please solve this quick X problem?
  
• Question #ed6fb
  
• What is true about ATP from cellular respiration? A) most is lost as heat B)it is used to maintain body temperature C) it is used to perform cellular functions D) it is released from the breakdown of glucose C) all of the above are true
  
• Question #06d2c
  
• How do you solve #3x-51=-2x+59#?
  
• Are meiosis and mitosis similar?
  
• Is #c= e/-4 # a direct variation, inverse variation, or neither?
  
• How do you find the product of #(x + 5)^2#?
  
• How do you verify the identify #sintheta/csctheta=sin^2theta#?
  
• If an electron jumps from the n=2 orbit to the n=3 orbit, then what kind of spectrum will be produced: a continuous spectrum, an absorption line spectrum, or an emission line spectrum?
  
• How do you solve #-16x ^ { 2} = 12x ^ { 2} + 24x + 5#?
  
• A girl goes to her friend's house, which is at a distance of 12 km. She covers half of the distance at a speed of x km/hr. and the remaining distance at a speed of (x+2)km/hr. If she takes 2 hrs 30 minutes to cover the whole distance, find "x" ?
  
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