Related FAQs

• What are cathode rays?
• An aqueous solution of silver nitrate (v) is electrolysed for 25 minutes using a current of 0.45a . The amount of silver deposited on the cathode is 0.755g. find the relative atomic mass of silver.
• What are cathode rays?
• What's the first step to doing any stoichiometry problem?rnquestion 4 options:rnrncalculate moles of unknown chemical entityrnrnwrite the balanced chemical reactionrnrnpray and get a good night's sleeprnrncalculate moles of known chemical entity
• A lead storage battery was discharged to flow 0.4 mol of electrons. Find the change of the mass of cathode.
• A lead storage battery was discharged to flow 0.4 mol of electrons. Find the change of the mass of cathode. The answer should be 12.8 grams.
• Which of the following forms of radiation has the greatest penetrating power?rnrnalpha particlesrnrnbeta particlesrnrngamma raysrnrnpositrons
• A spray can is used until it's empty except for the the propellant gas, which has a pressure of 1344 torr at 23 °c.rnif the can is thrown into a fire (t=475 °c), what will be the pressure in the hot can?rn65 torrrn27,757 torrrn532 torrrn3,400 torr
• Molten potassium chloride was electrolysed. at the end of the electrolysis, 7.8 g of potassium had been deposited at the cathode. what volume of chlorine gas was given off at the anode? ( k = 39 1 mole of any gas occupies 24 000 cm³)
• Which statement is true about a salt bridge: a. it allows the passage of electrons through it b. it connects the metal of the anode to metal of the Cathode C. it is commonly used in electrolysis d. it balances the charges in each of the redux half cell by migration of ions
• Which of these is/are TRUE about mercury and silver-zinc button batteries? i. Zinc is the anode in both batteries ii. Mercury is the anode in mercury battery while silver is the anode in silver-zinc battery iii. HgO and Ag₂O are the cathodes in mercury and silver-zinc batteries, respectively iv. Both are primary batteries, hence rechargeable