Lower range value: Upper range value: Lower range value: Upper range value:

Lower range value: Upper range value: Lower range value: Upper range value:

Chemistry Kinetics

a. molarity b. weight/volume percent c. parts per thousand d. parts per million e. parts per billion

225 mL of 0.445M H2SO4 solution is added 32.3 g Aluminium metals and reacts to completion. How many Moles of H2 are Produced ? Al(s)+H2SO4(aq)----> Al2(SO4)3(aq)+H2(g)

Ca(s) + H2SO4(aq) --> CaSO4(aq) + H2(g)

This question is about chemistry and deals with labs and materials and I'm not sure what the question is really asking. Independent or dependent maybe? Please help. Thank you!

a. How many moles of Ar are present in a 1.00 qt flask that has a pressure of 625 torr at a temperature of 35°C? b. What is the mass of this Ar?

a. What is the pressure in atm? b. What is the pressure in torr? Enter your answer in scientific notation. c. What is the pressure in psi? Enter your answer in scientific notation.

the only details I have are that you have 400 grams and you will need to convert that to moles

How many liters of hydrogen gas are needed to react with 15 liters of nitrogen gas in the reaction forming ammonia, NH3? 3 H2 (g) + N2(g) --> 2 NH3 (g)

i need this for homework it is very hard

a. What is the partial pressure of each gas (in atm and in torr) in a 20.0 L cylinder at 260 K? N2: O2: He:

What is the pressure in atm? What is the pressure in torr? Enter your answer in scientific notation. What is the pressure in psi? Enter your answer in scientific notation.

A) 5.00 mole of NaCl in 11.7 L of solution B) 330 mg of NaCl in 1.00 mL of solution

How many moles of N2 are present in a 1.00 qt flask that has a pressure of 475 torr at a temperature of 35°C? What is the mass of this N2?

Potassium iodide (KI) is used to treat iodine deficiencies. What is the %(w/v) of a 45 mL solution containing 4.2 g of KI?

Help please!

How much heat does it take to increase the temperature of 1.45 L of water from 0 deg Celsius to 100 deg Celsius? Assume water has a density of 1 g/mL

A mylar balloon is filled with helium gas to a pressure of 107 kPa when the temperature is 22°C. If the temperature changes to 45°C, what will be the pressure of the helium in the balloon?

Please help!!

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