Answers created by Kris Caceres

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• Question #877f4
  
• What are the number of bonding pairs and lone pairs of electrons in #H_2O#?
  
• I know the three is correct, but what’s the rest?
  
• During an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles of another gas under the same conditions, what is the molar mass of the unknown gas?
  
• A sample of gas occupies 17 mL at -112 C. What volume does the sample occupy at 70°C?
  
• What element has symbol of N?
  
• What element has symbol of O?
  
• What element has symbol of Am?
  
• What element has symbol of Am?
  
• What element has symbol of Na?
  
• What element has symbol of Cl?
  
• What element has symbol of Zn?
  
• What element has symbol of Cd?
  
• What element has symbol of Li?
  
• What element has symbol of Rg?
  
• What element has symbol of Al?
  
• 120 grams #NaCl# is equal to how many molecules of #NaCl#?
  
• Potassium chloride (KCI) is a compound formed when K transfers an electron to CI. What kind of bond holds KCl together?
  
• Question #99fb0
  
• How many significant digits does 80800 have?
  
• How many significant digits does 20.0020 have?
  
• What happens to the temperature of a gas when it is compressed?
  
• What element has symbol of Ar?
  
• When you cool liquid water to 0C, what will happen?
  
• What element has symbol of B?
  
• Question #abbbc
  
• What element has the highest electronegativity?
  
• How many significant digits does 50007 have?
  
• What is the formula for ammonium sulfate?
  
• What element has symbol of C?
  
• What is the empirical formula of a substance with 74.0% C , 8.65% H, and 17.4% N?
  
• The sum of 2 numbers is 14 and the sum of their squares is 148, how do you find the numbers?
  
• How do you write the mathematical expression for "4 more than 3"?
  
• How do you simplify #sqrt(1/3)#?
  
• Kevin uses #1 1/3# cups of flour to make one loaf of bread, #2 2/3# cups of flour to make two loaves of bread, and #4# cups of flour to make three loaves of bread. How many cups of flour will he use to make four loaves of bread?
  
• What does the Constant R in the Ideal Gas Law mean?
  
• What general shape will #C Cl_4# most likely have?
  
• How do you factor the trinomial #r^2 + 6r + 5#?
  
• What is the name of #CaCl_2#?
  
• How do you solve #9(2x-1)+x=3(6x-3)#?
  
• How do you use PEMDAS to simplify #(9-7)^3 - (4+3)#?
  
• How do you factor: #y= 27x^3 - 1 #?
  
• What is the frequency of a yellow lamp with a wave length of 590 nm?
  
• How do you solve the following linear system #-x + 2y = 6 , x + 4y =24 #?
  
• What is #(-5pi)/6 # radians in degrees?
  
• How do you write "calcium hydroxlde + phosphoric acid yield calcium phosphate + water"?
  
• How do you write 100,000,000,000 in scientific notation?
  
• How do you solve 7x - 2y = -8 and x = -2?
  
• Humans sleep about #1/3# of each day. Let each year equal #365# #1/4# days. How many days in a year does the average human sleeps?
  
• How many significant digits are in the value 0.0050340?
  
• \What is the percent by mass of hydrogen in aspirin, #C_9H_8O_4#?
  
• How do you balance #AlBr_3 + K_2SO_4 -> KBr + Al_2(SO_4)_3#?
  
• What is ground state electron configuration of W3+?
  
• What is the #d# configuration of the metal in #["Mn"("H"_2"O")_6]^(2+)#? Will it be low spin or high spin?
  
• What is the mass of 1 mole of #O_2# molecules?
  
• What is the molecular weight of SO4?
  
• How many moles are in 54.6 grams rubidium sulfide?
  
• How do you convert 2.50 moles of CuO to grams?
  
• What is the mass in #3.01 * 10^23# molecules of #F_2#?
  
• The equation #2NaNO_3 +CaCl_2->2NaCl+Ca(NO_3)_2# is balanced. How many atoms of oxygen are there on each side of the equation?
  
• Question #54a62
  
• How many moles are in #5.75 * 10^24# atoms of Al?
  
• What is the electron configuration of calcium?
  
• How many electrons are lost or gained in forming each #As^(-3)#?
  
• What are the electron configurations for I and N3?
  
• What is the maximum electron capacity of the "s" orbital of an atom?
  
• What is the electron configuration of a Mn atom in the ground state?