17 Answered Questions for the topic Reactions

12/13/19

I need to balance an equation between two molecules.

I need to write out and fully balance a complete combustion reaction between these two molecules.

12/03/19

Titration Questions

What volume of each acid will react completely with 60.0 mL of 0.125 M Potassium Hydroxide?a.) .150 M Nitric Acidb.) .200 M Phosphoric Acid

02/27/19

Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.

Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50... more

08/08/18

aqueous potassium chloride will react with which of the following?

aqueous potassium chloride will react with which of the following? A. calcium nitrate B. sodium bromide C.lead nitrate D.barium nitrate E. sodium chloride   I know the answer is lead nitrate... more

06/28/18

Aspirin Synthesis Lab - What chemicals are present in each step?

Aspirin is prepared from salicylic acid via an esterification reaction, which involves forming an ester (ASA) from an alcohol (salicylic acid) and carboxylic acid derivative (acetic anhydride), in... more

12/06/17

How many mL of 0.15 M magnesium chloride are required to completely precipitate the silver ion in 25.0 mL of .25 M silver nitrate?

Consider the reaction between aqueous magnesium chloride and aqueous silver nitrate. How many mL of 0.15 M magnesium chloride are required to completely precipitate the silver ion in 25.0 mL of .25... more

10/16/16

Chemistry problem

In the explosion of a hydrogen-filled balloon, 0.46 g of hydrogen reacted with 4.1 g of oxygen to form how many grams of water vapor? (Water vapor is the only product.)

09/22/16

Why doesn't NaCl and HCl have the same effect on an equilibrium reaction

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 reaction... more

04/05/16

General Chemistry Reactant question

I have no idea how to do the following problem...   "If you wish to prepare 2.00 g of BaSO4 (233.43 g/mol) from 1.5 M Na2SO4 (142.04 g/mol) and 1.0 M BaCl2 (208.23 g/mol) how many milliliters... more

03/19/16

finding final temperature from the heat of a reaction.

1.20 grams of Mg is burned producing MgO. The heat from the reaction is used to warm 500 grams  water at 5 degrees Celsius. Find the final temperature of the water.

11/10/15

Reversible reaction problem

1) What would happen to the amount of products formed in the following equilibrium in the following circumstances (explain your answers)? The forward reaction is endothermic.   CH4(g) + H2O(g) ?... more

09/23/15

The molar mass of salicylic acid (SA) is 138.12 g/mol. How many theoretical mols are there in the 4.02 g of the SA reactant the student started the reaction wit

The molar mass of salicylic acid (SA) is 138.12 g/mol. How many theoretical mols are there in the 4.02 g of the SA reactant the student started the reaction with?

04/21/15

Gas Laws and stoichiometry

Assume that 18.4 g of Al react with HCl according to the equation Al(s) + HCl(aq) −→ AlCl3(aq) + H2(g) at STP. How many moles of Al react? Remember to balance the equation first. Answer in units of... more

08/22/14

Chemistry Problems

1.) Elemental phosphorus reacts with chlorine gas according to the equation: P4(s)+6Cl2(g)→4PCl3(l) A reaction mixture initially contains 45.09g P4 and 131.1g Cl2.   Once the reaction has... more

07/31/14

Where does the mass to energy conversion take place?

As I understand, the nuclear bomb "little boy" detonated over Hiroshima converted about the mass of a paper clip into energy during the explosion. Now, as far as I understand what was going on,... more

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