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Calculate the initial charge on the capacitor, use Q=VC, where Q is the charge, V is the potential, and C is the capacitance. You already know the capacitance of the capacitor (0.025 F). The potential on the capacitor before it is discharged must be measured. For this you can use 3 V as the initial potential
A buffer solution is prepared by dissolving 0.075 moles of HOBr and 0.075 moles of NaOBr in 500mL of solution. Calculate the pH of this buffer. (HOBr: Ka = 2.4 * 10^-9)
at t0 butadiene was introduced into an empty vessel at 326 degree celsius and the gas phase dimerization reaction was
calculate deltas if 1 mol of liquid water is heated from 0.00degrees c to 10 degrees c under constant pressure if cpm
How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
Rubidium-87 decays by beta decay with a half-life of 4.9 x 10^10 yr. How many 87Rb atoms are in a moon rock sample that has a rubidium decay rate of 3500 disintegrations per hour
A 70 piece of ice at 0 is added to a sample of water at 6. All of the ice melts and the temperature of the water decreases to 0. How many grams of water were in the sample?
Why is the boiling point of octane, C8H18, higher than that of methane, CH4, if they are both nonpolar molecules? 7-Using a diagram to illustrate your answer, explain the effect of temperature on the vapor pressure of a liquid.
Question- The boiling point of a substance is defines as the temperature at which liquid and vapor coexist in equilibrium.
The intial temp of the water is 19.0C and the final temp of the system is 25.1C. The heat loss to calorimeter is negligible. What is the mass of the water?
Calculate the mass of each product formed when 174 g of silver sulfide reacts with excess of hydrochloric acid (HCI).
6.48 g of NaH2PO4 and 21.96 gm of K2HPO4 are dissolved in sufficient water to make a liter of solution. Calculate the pH of the resulting solution.
sample of sodium reacts completely with 0.142kg. of chlorine forming 234 g. of sodium chloride. what mass of sodium
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