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Using the same sample of gas ( P1= 405 torr, T1 = 1 degree celsius), we wish to change the pressure to 4050 torr with no accompanying change in volume or amount of gas. What temperature T2, in Celsius, is needed to reach this pressure?Express the temperature numerically in degrees Celsius.
When 17 mL of a solution containing .29 M Ca(OH)2 is diluted to 30 mL, a dilute solution is formed. What is the OH- concentration in 5 mL of the dilute solution?
The elements of group 1 (Li-Cs) are very electropositive because of A. they all have small atomic radii B. they all have high second ionisation energies C
A student following the procedure of the experiment determining the molar mass of a volatile liquid by the dumas method obtaint the following data for an unknown volatile liquid
What volumes of .200 M HCOOH and 2.00 M NaOH would make 300 mL of a buffer with the pH of one made from 475 mL of .200 M benzoic acid and 25 mL of 2.00 M NaOH?
In the catalytic converter of an automobile exhaust system, some SO2 is converted to SO3 by the reactionSO2(g) + ½ O2(g) ? SO3(g)
balanced chemical equation for dehydration: k3[Fe(C2O4)3].3H2O --> K3[Fe(C2O4)3] + 3H2O results: weight of container 38.185g, weight of container and hydrated salt:
A solution of ammonia and water contains 4.50×1025 water molecules and 5.30×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
A spoonful of sodium chloride is dissolved in a liter of water. What is sodium chloride in this solution?
What is the number of moles of atoms of oxygen contained in 49 grams of sulfuric acid, H2SO4?
What is the pH of a buffer that consists of 0.45 M CH3COOH and 0.35 M CH3COONa? Ka = 1.8 × 10-5
A ground-state H atom absorbs a photon and makes a transition to n=4 energy level. It then emits a photon of energy 4.085 x 10^-19 Joules. What is the final energy and n value of the atom?
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