Answers edited by Soumalya Pramanik

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• What are the group 18 elements called?
  
• How do you find the protons, neutrons, and electrons for a Bromine (#1^-#) anion with a mass number of 80?
  
• What is the wavelength of this light?
  
• Question #2a70b
  
• Barbie is thinking of a number. Twenty less than one-third of the number is 72. What is Barbie's number?
  
• How do you solve #-16x ^ { 2} = 12x ^ { 2} + 24x + 5#?
  
• How do you convert 225 degrees into radians?
  
• How to solve q 92 on the sides and angles of a polygon.?
  
• Please solve this quick X problem?
  
• What does exothermic mean?
  
• Question #e2433
  
• 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 solve #3x-51=-2x+59#?
  
• 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 verify #tanx / (1-cosx) = cscx (1+secx)#?
  
• Question #844e5
  
• How do you factor completely #5x^2-5x-100#?
  
• How do you find the product of #(x + 5)^2#?
  
• How do you rationalize the denominator and simplify #( 3sqrt6 + 5sqrt2)/(4sqrt6 - 3sqrt2)#?
  
• Question #ed6fb
  
• 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!
  
• Question #c9a3b
  
• Question #ca751
  
• 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?
  
• What are the products from the Reaction of water and sulphuric acid?
  
• If an element has atomic number 9 and atomic mass 19, how many neutrons will it have?
  
• 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
  
• Solve this equation. what is the answer ? have m by it self (-9)(-9)4 = m
  
• Question #98339
  
• During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with what bases?
  
• Question #a511c
  
• 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)#)
  
• 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?
  
• Solving Systems...I'm Stuck?
  
• How do you solve #\frac { b } { 13} - \frac { 3b } { 13} = \frac { 8} { 13}#?
  
• How do you solve #-16x ^ { 2} = 12x ^ { 2} + 24x + 5#?
  
• Is #c= e/-4 # a direct variation, inverse variation, or neither?
  
• 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?
  
• How do you verify the identify #sintheta/csctheta=sin^2theta#?
  
• How do you prove: #Cosx + sinx tanx = secx#?
  
• How do you solve #c- 14\geq 2#?
  
• 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
  
• Are meiosis and mitosis similar?
  
• Difference between Co-Factors and Co- enzymes?
  
• Five importances of nitrogen cycle ?
  
• Question #b585f
  
• How do you solve #27x ^ { 2} - 55x + 2= 0#?
  
• 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" ?
  
• How do I find the value of #log 1000#?
  
• What is the energy in Joules of a single photon with wavelength of 154 nm?
  
• Question #cde93
  
• What is meant by the term one mole of molecules?
  
• Question #7c97b
  
• When catching cricket ball, we pull our hands back. why?
  
• How do you convert #(5pi)/12# into degrees?
  
• 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?
  
• 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?
  
• 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?
  
• Question #7acfa
  
• How do you solve the following system?: #8x +6y =9 , - 5x -7y = -2#
  
• If sodium iodide and calcium are mixed together, what are the resulting products?
  
• Question #9fe7c
  
• Question #36757
  
• How do you use the quadratic formula to find the solutions of #x^2-21=4x# ?
  
• Question #05787
  
• The 4th and 8th term of an ap is in ratio 1:2.the tenth term is 30.find the common difference?
  
• How to do you graph #y=1/3x+2# by plotting points?
  
• Question #230b9
  
• 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)#?
  
• How do you verify the identify #sintheta/csctheta=sin^2theta#?
  
• Question #993ff
  
• 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 ?
  
• Question #06d2c
  
• If an object is raised four times as high, how is its gravitational interaction (potential) energy affected?
  
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