Answers created by Udhaya S.

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• Any physics expert online? See the attachment.
  
• What binds atoms together in elements and compounds?
  
• The smell of which of the following can be detected quickly and why?(1) Spicy hot food cooking in kitchen.(2)Ice cream kept at room temperature
  
• If a rocket with a mass of 3900 tons vertically accelerates at a rate of # 7/9 m/s^2#, how much power will the rocket have to exert to maintain its acceleration at 5 seconds?
  
• Why is the boiling point of NH3 is greater than that of PH3??
  
• A projectile is shot from the ground at an angle of #pi/8 # and a speed of #1 /12 m/s#. Factoring in both horizontal and vertical movement, what will the projectile's distance from the starting point be when it reaches its maximum height?
  
• Calculate the acceleration of a body of 250g when acted by a force of 1 newton?
  
• Heat is transferred from the heating element to the pot to the boiling water. What is the MOST likely method of heat transfer?
  
• Isotopes of the same element have different what?
  
• Substance X?
  
• What is the mass of two moles of oxygen atoms (atomic mass 16 amu)?
  
• 5x-1≤4 Answer...?
  
• Different kinds of substances have different properties. How would I Compare and contrast the electrical properties of salts, metals, and acids?
  
• What are some examples of relative velocity?
  
• 90% of $15 is what number?
  
• Calculate the molarity of 1.60 L is solution containing 1.55 g of dissolved KBr?
  
• Sulfur combines with iron to form iron(II) sulfide. In an experiment, 15.24 g of Fe are allowed to react with 17.34 g of sulfur What is the limiting reactant? The reactant in excess? What mass of FeS is created?
  
• For the following reaction system at equilibrium, which one of the changes would cause the equilibrium to shift to the right?
  
• F2 and I2 both are covalent compound while f2 is gas and I2 is solid?why ?Give reason
  
• How do you write the equation of a circle with a center at (6, 7) and a diameter of 4?
  
• How do you solve the linear equation #3-2x=9#?
  
• A sample of hydrogen gas collected at STP occupies 181mL. The gas is heated to 25degree Celsius and is found to occupy 200mL.what is its new pressure in mm Hg?
  
• What is the vertex of # y = 2 (x - 4)^2 + 5 #?
  
• How do you solve the system #4x+8y= -20# and #7x-3y= -1#?
  
• How do you find the number of valence electrons in an atom?
  
• If 25mL of a solution of sodium chloride requires 17.9mL of 0.100mol/L silver nitrate for complete reaction what is the molarity of the chloride ion?
  
• What is sp ?
  
• How do exothermic reactions occur?
  
• What is ideal gas?
  
• What are some examples of ion-dipole forces?
  
• What are some examples of empirical formulas?
  
• How many unpaired electrons are in a beryllium atom?
  
• What are the four major groups of organic compounds?
  
• How do you factor #(9a+3b-c)^2-(3a-2b+c)^2 #?
  
• How do you balance #KClO_3(s) -> KCl(s) + O_2(g)#?
  
• Please help ASAP. I don't understand: Consider a light ray traveling from medium 1 to medium 2 with medium 2 extending downward indefinitely. Let the index of refraction of medium 1 be 1.0...?
  
• How do you solve #sin^2x+ 3/2cos(2x) = 0#?
  
• The sum of three numbers is 85. The first number is 5 more than the second. The third number is 3 times the first. What are the numbers?
  
• What is the pH of a .043 M #HCl# solution?
  
• Why is phenolphthalein used in weak acid strong base titration?
  
• How do you solve #2x + 4 = 4x - 2#?