Questions asked by Merlene C.

• Back to user's profile
• What's the greatest? 1 atm, 1 Torr, 1 mmHg, 1 kPa
  
• An element has a electron configuration of 1s2 2s2 2p6 3s2. Upon forming an ion, its new configuration is 1s2 2s2 2p6. Which is the ion formed?
  
• Which is NOT true of a double bond? a) It is the sharing of 4 electrons. b)It is longer than a single bond. c)It is weaker than a triple bond. d)it contains a sigma bond and pi bond
  
• A substance is 27 % C and 73 % S. Which is the mass of carbon in 300. g of this substance?
  
• What is the molarity of a solution that contains 5.0 moles of solute in 2.0 liters of solution?
  
• Which is the morality of Y when 180 g of Y is dissolved in enough water to make a 3 L solution? (Y =30 g)
  
• (1) Which is a binary molecular compound? a)CO2 (b) NaCl (c) KOH (d) Ba( NO3)2 2) Which substance is composed of molecules? (a) KOH (b) CuCL2 (c) H2O (d) Al
  
• 3)Which substance has aqueous solution with ph *less than* 7? a) Hydrochloric acid (b) sodium hydroxide (c) hydrosulfuric acid , (d) Acetic acid
  
• Which of the following has the greatest mass? a. 1 mole F2. b. 1 L F2. c. 1 molecule F2. d. 1 g F2.
  
• Which is true when comparing one mole of Cl2 (gas) to one mole of Ne (gas) at STP? a. Chlorine has a greater mass. b. Chlorine has a greater volume. c. Neon has a greater mass. d. Neon has a greater volume
  
• The number 6.02 ×1023 is to 1 mole as:? a. 3 feet is 1 yard. b. 5280 feet is 1 mile. c. 12 inches to 1 foot. d. 12 is to 1 dozen. e. 100 cm is to 1 m.