Chemistry

Chemistry Metals and Non-metals doubts (only 3)

1.Sodium oxide dissolves in water forms sodium hydroxide .What is the nature of this solution? 2.Aluminum easily combines with oxygen but still can be used for making kitchen utensils .Why? 3.Hydrogen

What can you make out of household items to produce fire

i mean alchemy and all that becuz my chemist teacher put sugar on a bowl and put some kind of powder or something idk i forgot(it may not be a powder) and 3-5 drops of some liquid(it was in a brown bo

More pH problems that i do not get please help!!

(1)A 100.0 mL sample of 0.180 M HClO4 is titrated with 0.270 M LiOH. Determine the pH of the solution after the addition of 75.0 mL of LiOH. (2) A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M

Beginner College Chemistry Questions, Need help

Thanks for the help if you happened to help me with my other two problems, now Ive got a few more, and I need to know these well for the test coming up and I cant seem to figure them out. Theyre very

How do you balance this redox reaction (in a basic solution) with the half-reactions method

Here is the equation: Cl2 + OH- → Cl- + ClO3- (1 diatomic chlorine molecule + 1 hydroxide anion → 1 chloride anion + 1 chlorate anion) Here is the answer: 3Cl2 + 6OH- → 5Cl- + ClO3- + 3H2O (3 diatom

Need help preserving a crystal if possible

I love the way a copper sulfate crystal looks and the magnificent way it forms into a large flawless crystal, but the copper sulfate pentohydrate returns to copper sulfate. Is their a way to prevent

What kind of explosion could this mixture produce

- 1/2 ounce of Potassium Chlorate - 1 ounce of Sulfur - 1/2 ounce of 400 mesh Aluminum Powder - 3 1/2 ounces of potassium perchlorate - 1 1/2 ounces of sodium benzoate - 2 1/2 ounces of black powder

CHEMISTRY QUESTION!!! please help....+10 for best answer

This questions came under gas laws lesson.... Please answer them.... The density of Hg is 0.1784 kg/m^3 at STP. If a given mass of He at STP is allowed to expand to 1.5 times its initial volume by ch

URGENT Year 9 chemistry IGCSE questions

Please, even if you only know one, please answer. 1. What are the four factors that affect the rate of reaction? 2. Describe three different ways of measuring the rate of a reaction. Give one advantag

An equilibrium constant Kc = 1 × 10-3 for a reaction indicates that the reaction favors product formation.

True or false? 2. An example of a stress on an equilibrium is the increase of pressure in a closed system when the pressure of a reactant gas is increased from 1.0 atm to 2.0 atm. True or False ? 3

Stoichiometry/Limiting Reagent question

If 60 mL of Vinegar contains 0.049 mol of HC2H3O2, how many grams of Sodium Hydrogen Carbonate (NaHCO3) will react with this amount of acid? Having a hard time getting this one started..could someon

10 POINTS!! CHEMISTRY HELP!!

DONt LEAVE!! I know it looks like a lot!! PLEASE ANSWER AS MANY QUESTIONS AS YOU CAN!!! 1. The rusting of iron is represented by the following equation: 4Fe + 3O2 → 2Fe2O3 If you have a 1.76-mol s

Can you make a crystal glow brightly without using an external light source

I want to know if you can make a crystal have a fairly bright glow, nothing like a light bulb but still a considerable glow. Is it possible to make a crystal glow without it being an optical illusion

Molarity calculation

Suppose 2.71g of zinc chloride is dissolved in 350.mL of a 56.0mM aqueous solution of potassium carbonate. Calculate the molarity of zinc cation in the solution when it comes to equilibrium. You can a

Beginner College Chem Question, please help

Ok, a solution is prepared with 70.0g of HN03 and 130.0g of H2O. It has a density of 1.21 g/mL. What is its molarity? Please help Ive been stuck on this for some time, there has to be some conversion