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154 g of water at 80.0°C are mixed with 78.1 g of water at 23.0°C. If no heat is lost to the surroundings, what is the final temperature of the water? The specific heat of water is 4.184 J/g·°C.
Gold has a face-centered cubic structure and has a density of 19.3 g/cm3. What is its atomic radius
1.25 moles of NOCl were placed in a 2.50 L reaction chamber at 427ºC. After equilibrium was reached, 1.10 moles of NOCl remained. Calculate the equilibrium constant, Kc, for the reaction 2NOCl(g) > 2NO(g) + Cl2(g).
sodium metal reacts violently with water to form naoh and release hydrogen gas. suppose that 10.0g of na react
When the sample is submerged in ice water at T = 0.00 C, its volume decreases to 2.57 L. what was its initial temperature (in K and C)?
determine the molecular formula. Enter your formula as plain text, with carbon first, then hydrogen, the chlorine. So if the formula were C10H21Cl, you would enter C10H21Cl.
you are given a jar containing a mixture of three different solid substances. the particles of each substance are
Diamond has a face-centered cubic unit cell, with four more C atoms in tetrahedral holes within the cell. Densities of diamonds vary from 3.01 g/cm3 to 3.52 g/cm3 because C atoms are missing from some holes.
Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O.
If you are performing a Zinc-Copper Galvanic Cell where Zn is the Anode and Cu is the cathode and you soak the salt bridge with a saturated ammonium nitrate solution, in which direction would the ammonium ions move when the salt bridge completes t..
a 36.4 l volume of methane gas is heated from 15 degrees c to 98 degrees c at constant pressure. what is the final
A balloon is filled to a volume of 7.00 x 102 mL at a temperature of 20.0 oC. The balloon is then cooled at constant pressure to a temperature of 1.00 x 102 K.
When 24.0 g of glucose (a nonelectrolyte) are dissolved in 500. g of water, the solution has a freezing point of -0.47°C. What is the molar mass of glucose? Kf of water is 1.86°C/m.
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