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The rate of reaction in terms of the "rate law expression" includes the rate constant (k), the concentration of the reactants, and the orders of the reaction with respect to the different...

For the reaction A+B+C=>D+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected: Trial A(M) --------B(M)------...

# What is the electron dot structure for Br2

I need some help with my chemistry homework , it asks about electron dot structures

# What's the balanced chemical equation for N2 + H2 = NH3 ?

I want to know how to balanced equations

# Chemistry problem about solutions and pH.

"Calculate how many cm^3 of a solution of sulfuric acid 80% (density = 1.727 g/mL) must be diluted with water in order to prepare a 0.2 L 0.4 M solution. If we add to this final solution of sulfuric...

I don't manage to solve this problem, can someone help me?  "Calculate how many cm^3 of a solution of sulfuric acid 80.0% (density = 1.727 g/mL) must be diluted with water in order to...

# chemistry rate of reaction

is the rate of disappearance of reactant the same as the rate of appearance of product??? why??

Calculate how many cm^3 of a solution of perchloric acid 55.0% ( density = 1.47 g/mL) must be diluted with water in order to prepare a 0.5 L 0.3 M solution. How much water do we have to add in order...

# what compounds don't involve covalent bonds?

Which compound below does not involve covalent bonds? (A) C2H6 (B) SF4 (C) O2 (D) Mg3N2   stuck on this question. Please help.

# how do i find the moles and molar mass of an unknown solid acid?

A lab team places .0250g of an unknown solid acid in an Erlenmeyer flask. They neutralize the solid acid with 15.0ml of .210 M Na(OH)(aq). One mole of the acid reacts with one mole of the base. Calculate...

# you are given 1.0MHCl 65.1 liters of it + an unknown mixture of NaCHO3 and NaCl= CO2 which is .802g+H2O+NaCl how do you solve for the ratio of NaCl and NaCHO3

you are given 1.0MHCl 65.1 liters of it + an unknown mixture of NaCHO3 and NaCl= CO2 which is .802g+H2O+NaCl how do you solve for the ratio of NaCl and NaCHO3 in the unknow mixture the...

# Based on an element's Lewis dot structure...

This is the complete question:   How can you tell if an element is a metal or a nonmetal based on its Lewis dot structure?

# small atom having much stronger bond

Why atom with small size formed much stronger bond than atoms with large size? Please Explain.

# saturated and unsaturated carbon compound

Why unsaturated carbon compound is more reactive than saturated carbon compound and why saturated carbon compounds are less reactive ?

# Homologous series.

Homologous series have same chemical property why? Methane and ethane have different chemical property or not !If yes then why just adding a hetero atom in both compound can make both compound...

# Homologous series

What is homologous series? can we put alkanes , alkenes , alkynes  in to same group or this is homologous series or not if yes then why if no then why not!

# small atom having much stronger bond

Why atom with small size formed much stronger bond than atoms with large size? Please Explain.

# Word Problems

I am stumped...   Anne and Nancy use a metal alloy that is 18.3% copper to make jewelry. How many ounces of a 15% alloy must be mixed with a 24% alloy to form 90 ounces of the desired...

# Identify Unknown Solutions

You have been prepping for a chem. lab and the safety officer has discovered some mysterious white solid on the floor of the corridor outside of the lab. She has asked you if you could...

# How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of 0.20 M H3PO4?

How many mL of a 0.10 M NaOH solution are needed to neutralize 15 mL of a 0.20 H3PO4?