1.9. How many grams of lithium are in a 1320 [mAh] cell phone battery? Note that...
3. A state-of-the-art iPhone features a battery of ca. 3000 mAh capacity. The battery features an open circuit voltage of 3.7 V. Given that power=voltage ́current. And assume that each fully charged battery lasts 2 days of normal usage. How many days of usage can we sustain if we could transfer all energy we consume a day to power an iPhone? 4. Ampere (A) is the unit used to measure the flow of electricity. 1A equals the amount of electricity...
Need help with questions 4,5, and 6. 4) A cell phone battery has an energy density 550 w-h/L. The volume of the battery is 15 cm. What is the amount of energy stored in this battery (w-h) 2 5) Some batteries are rechargeable, and others are not. Cell phone batteries are rechargeable. Because rechargeable batteries lose their ability to "hold" charge after too many recharges, the manufacturer often indicates how many recharges to expect. What is a typical number of...
мимитисмо 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles are in 2.3 grams of phosphorus? 6) How many grams are in 11.9 moles of chromium 7) How many moles are in 9.8 grams of calcium? 8) How many grams are in 238 moles of...
2.) How many grams of lithium bromide are dissolved in 125.0 grams of solution that is 5.00% sodium iodide by mass? 3.) How many milliliters of a 20.0% antibiotic solution must be administered to a patient who needs 1.75 grams of antibiotics? Assume the density of the solution is 1.18 g/mL.
A typical cell phone battery produces 3.7 volts and holds 2.5 amp-hours of charge. Calculate how high you could raise a 1 kg mass with this amount of energy.
How many grams of H2O are needed to react with 27.2 g of lithium oxide to give lithium hydroxide blank grams of H2O Question 18 What is the pressure, in atmospheres, of 33.2 g of CO in a 16.4L flask at 24 °C? I No new data
A common primary battery for pacemakers is the lithium–iodine cell. The negative electrode is lithium metal, the positive electrode is a paste made with I2 and a small amount of polyvinylpyridine (PVP), and the separator is the ionic salt LiI. The overall reaction is 2Li + I2 « 2LiI(s) Write out the half-cell reactions and using the DG°f,LiI = -270.3 kJ mol-1 calculate the equilibrium potential and the theoretical capacity in A·h·g−1. You may treat the positive electrode paste as...
How many grams of lithium are required to completely react with 58.5 mL of N2 gas measured at STP? 6 Li(s) + N2(g) = 2 Li3N(s)
7. How many grams of lithium phosphate are needed to prepare 4.0 liters of a 0.2 M solution of lithium phosphate ? 13. Which of the following is a chemical change? Melting naphthalene a covalent compound, cooking an egg, slicing a tomato, heating baking soda, sodium bicarbonate, heating fat with a strong base, pumping gasoline, mixing and acid with a base ?
how many grams of iron (iii) hydroxide can be obtained by reacting 0.8023 g of lithium hydroxide with 0.1350 g of iron (iii) sulfate? How many grams of iron(Il)hydroxide can be obtained by reacting 0.8023 g of lithiu hydroxide with 0.1350 g of iron(III)sulfate? Please circle or box your answer 6. 874 Ynoi