Calculate the number of grams of each element in 100 g of phenolphthalein if the compound is 75.46% C, 4.43% H, and 20.10% O by mass. Convert each to moles.

Calculate the number of grams of each element in 100 g of phenolphthalein if the compound is 75.46% C, 4.43% H, and 20.10% O by mass. Convert each to moles.

In HPLC, which factor would be least effective in improving the resolution of overlapping peaks? The options are: Change functionality of stationary phase Change solvent Ph Increase...

The gases in a hair spray can are at a temperature of 27 degrees Celsius and a pressure of 30 psi. If the gases in the can reach a pressure of 90 psi, the can will explode. To what temperature must...

A container containing 5.00 L of a gas is collected at 100 Kelvin and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure? (That means pressure...

A 40.0 L tank of ammonia has a pressure of 12.7 kPa. Calculate the volume of the ammonia if its pressure is changed to 8.4 kPa while its temperature remains constant - Use an equation - Show All Work...

A gas occupies 900.0 mL at a temperature of 27.0 degrees Celsius. What is the volume at 132.0 degrees Celsius? - Use an Equation - Show All Work

Why are bridge head carbocations unstable?

The problem deals with the titration of 441 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 1.3 M NaOH. What will the pH of the solution be when 0.2294...

The problem deals with the titration of 441 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 1.3 M NaOH. How many mL of the 1.3 M NaOH are needed...

How many joules of heat are required to heat 35.0 g of isopropyl alcohol from the prevailing room temperature, 21.2°C, to its boiling point, 82.4°C? (The specific heat of isopropyl alcohol is 2.604...

A student carried out the reaction starting with 1.993g of unknown (X2CO3) and found that the mass loss due to CO2 was 0.593g. What is the identity of the metal(K,Li, or Na?)

Has this ever been answered? I need to know for a science fair project.

Very urgent chemistry hw due tomorrow at 11am

Fe2 (SO4)3 (NH4)2 C2O4

0.0219 x 0.317 = ? Give the answer in correct number of significant figures. ———————————————————

when EAN rule is obeyed?? only when it is 36??

LiOH+ Fe(NO3)3

in which case energy released is min:- a)cl to cl- b)p to p- c) n to n- d) c to c- method used in finding it is?

Recently in my AP Chem class we did a simple reaction demonstrating equilibrium: [Co(H2O)6]2+(aq)(pink) + 4Cl-(aq) <--> [CoCl4]2-(aq)(blue) + 6H2O(l) (in an ethanol solution). The...

There are four possible answers: a. 15 fluid ounces. b. 20 fluid ounces. c. 24 fluid ounces. d. 30 fluid ounces Word problems like these confuse me and I just don't...

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