Which of the following elements will NOT form an ion with a -1 charge? A)Lithium B)Fluorine C)Iodine D)Chlorine
All cells reproduce to produce new cells. How they reproduce depends on the type of cell is being produced. When you get a paper cut, your cells reproduce by (4) to make new copies that are the same as your old cells to heal. These skin cells are (5)______ and contain all your DNA. This is different from your gametes, which are (6). These cells are produced through the process of (7) The purpose of these cells is to ensure that your children will have (8)_______ and not be identical to you. Question #6: This is different from your gametes, which are (6)______
1) PbBr₂ (1) What ions are present? Which one will move towards the cathode? Which one will move towards the anode? Write the anode half equation. Write the cathode half equation. f) Write the overall redox reaction.
Mn2+ ions is prepared by dissolving 1.584 g of pure manganese metal in nitric acid and diluting to a final volume of 1.000 L. The following solutions are prepared by dilution. For solution A, 50.00 mL of stock solution is diluted to 1000.0 mL. For solution B, 10.00 mL of A is diluted to 250.0 mL. For solution C, 10.00 mL of B is diluted to 500.0 mL. Calculate the molar concentrations of the stock solution and solutions A, B, and C.
Sodium combines with water to produce sodium hydroxide and hydrogen gas. Which word equation represents this violent reaction? O sodium hydroxide + water _, sodium + hydrogen O sodium + water + - sodium hydroxide + hydrogen O sodium + hydrogen - sodium hydroxide + water • sodium + sodium hydroxide - water + hydrogen
Calculate the volume (mL) of a 2.50M NaOH solution are required to make 725 mL of a 0.150M NaOH solution?
The reaction shown has first order kinetics: 2H2 O2 (1) —> 2H2 O (1) + O2 (g) If originally a solution of 0.600 M H2O2, its concentration was found to be 0.0750 M after 54.0 min. In how many minutes will the concentration be 0.300M? A) 6.80 B) 18.0 C) 14.0 D) 28.0 E) 54.0
I have an unknown volume of gas held at a temperature of 126 K in a container with a pressure of 31 atm. If by increasing the temperature to 209 K and decreasing the pressure to 19 atm causes the volume of the gas to be 9.4 liters, how many liters of gas did I start with?
Suppose you wanted to measure 53 grams of water for a Phase Change experiment. Explain why you would not need a Triple Beam Balance:
