Answers created by Dwight

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• What is the electromagnetic spectrum used for?
  
• How do you simplify 2 cubed root 81 + 3 cubed root 24?
  
• What is formed on complete combustion of carbon?
  
• An atom of helium contains two protons,two electron and two neutrons. Indicate the possible ways of arrangement of these particles in the helium atom?
  
• Question #a7d7b
  
• What is the greatest common factor of 8, 12 and 24? Provide an explanation of how the find greatest common factor.
  
• Question #9046f
  
• Question #67a4c
  
• Question #ddd3d
  
• Question #40c12
  
• Question #2381f
  
• Question #5db68
  
• 34.6g of propane is initially at 0 degrees celsius and 100kPa. If the temp of the gas is accidentally raised to 25 degrees celsius, what mass of propane must be released in order for the volume occupied by the gas to remain constant?
  
• . If a planet’s closest distance to the Sun is 1.00 AU, and its furthest distance from the sun is 9.00 AU, what would its orbital period be?
  
• Question #50ba8
  
• Question #0d3af
  
• Question #59120
  
• What property of a wave describes how often it occurs?
  
• Question #c044f
  
• Question #2b6ab
  
• Question #f9e09
  
• Why doesn't arsenic have any valence electrons in the third orbital?
  
• Why does #sqrt(49)# have two answers?
  
• You are in a desert on a hot day and see water in the distance. It is not really there, but results from refraction of light. What explains the behavior of the light waves?
  
• Question #6e65e
  
• Is H2PO4- stronger than HCN?
  
• Question #5d695
  
• How many gallons of each should be purchased?
  
• Question #f370b
  
• What is the least angle measure by which the figure can be rotated so that it maps onto itself? 45° 90° 180° 360°
  
• Negative values on Position vs Time Graphs and Velocity vs Time Graphs?
  
• A satellite was placed in an orbit above the earth's atmosphere, at a distance of 15,000 km from the center of the earth. What is the orbital period (in hours) of the satellite?
  
• Question #625bd
  
• Two forces of 125 Newton’s and 215 Newton’s act on an object, as shown in the diagram. Calculate the magnitude and direction (including a specific angle θ) of the resultant force and the equilibrant force? THE DIAGRAM IN THE DETAILS
  
• Question #6e6e9
  
• Question #216ce
  
• If 4/3 X-2/3Y=2, what is the value of 16X/4Y?
  
• Physics word problem?
  
• Physics help question 4?
  
• Physics help question 5?
  
• Question #930c5
  
• What element’s valence electrons are located in 5s^25p^5?
  
• Question #93563
  
• How do you calculate the Ionization energy of Hydrogen?
  
• Why do dry sodium chloride and the solutions of sodium nitrate and sodium chloride all impart the same color to the flame?
  
• What is the maximum number of orbitals in a p sub-level?
  
• You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years?
  
• Question #387ac
  
• Question #d422b
  
• Question #61a18
  
• The sound of thunder travels at a speed of 340 m/s and reaches you 2.5 s after you see a lightning flash. How far away is the lightning?
  
• Is zinc chloride a volatile substance?
  
• A car is travelling 44 feet per second (30 miles/hour). What is the angular velocity of its 22 inch diameter wheels, in revolutions per minute?
  
• Question #c6725
  
• Question #6b797
  
• Question #f33c5
  
• If atomic number is the number of protons in an atom, what do we call the number of neutrons?
  
• Question #edbe4
  
• What is the angular velocity of the second hand of a clock, in radians per second?
  
• Question #7aa60
  
• Question #6358b
  
• How can a shell in an atom store more than 8 electrons ?
  
• Question #f0862
  
• Question #1b7e2
  
• The ionization potential of an atom is defined as the energy required to completely remove an electron . using Bohr's theory , calculate the ionization potential of the hydrogen atom?
  
• What's the difference between a galvanic cell and an electrolytic cell?
  
• What are the 4 fundamental forces of nature and what connects them together? How do they interact together?
  
• Why is the arctan of equal to pi/6? My teacher says it's pi/6 but is it really that or is it pi/3? Maybe he messed up when providing the answer?
  
• Question #cbd73
  
• Why do most chemical reactions require multiple steps (reaction mechanism) and can't complete itself in one collision?
  
• In Aesop’s fable of the tortoise and the hare, the faster hare loses the race to the slow and steady tortoise. During the race, which animal has the greater average speed?
  
• Question #24dd4
  
• Question #652f1
  
• How much work would it take to push a # 1 kg # weight up a # 3m # plane that is at an incline of # pi / 4 #?
  
• Question #7b556
  
• How many meters are there in 235 cm?
  
• Which of the following set of solutions could be used to prepare a buffer solution?
  
• What is difference between mass and weight. In general and scientific Defination?
  
• Question #dd9aa
  
• Question #6eaaa
  
• 80.0 L of oxygen is collected over water at 30.0 °C. The atmospheric pressure in the room is 96.00 kPa. (a) What is the total pressure of this mixture? [ans: 96.00 kPa] (b) What is the partial pressure of the oxygen gas? [ans: 91.76 kPa]
  
• How many atoms are contained in 0.10 grams of copper?
  
• Please Help Me - Clausius-Clapeyron Equations?
  
• Question #1f782
  
• Question #17a18
  
• Question #dcb61
  
• A three-digit number is chosen at random. Is the probability that the number contains at least one zero given by #171/900#?
  
• Question #184bf
  
• Why do Noble Metals do not react with dilute acids?? Please answer Thank you
  
• Question #f88ab
  
• When 1.045g of calcium oxide is added to 50.0mL of water at 25.0°C in a calorimeter, the temperature of water increases to 32.3°C. Assuming density of solution is 1.00g/mL and a specific heat capacity of 4.19J/g˚C?
  
• Simplest way to solve this ?
  
• Can someone please help me ??
  
• What is the first overtone frequency for an organ pipe 2.00 m in length, closed at one end?
  
• Question #8bd01
  
• What are the ground state and the second excited state of a beryllium atom?
  
• A body of mass 40 kg has weight 460 N at a certain planet. What is the weight of: (a) 450 gr (b) 50 kg and (c) 15 gr on that planet?
  
• Question #47828
  
• A 9 kg ball starts at the top of a 84 m high building. How much kinetic energy does it have three-quarters of the way to the ground?
  
• What percentage of the total mass of the compound #KAl_2S_2O_3# is due to the sulfur in the compound?
  
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