Chemistry

How to calculate mass of oxygen in 2 mol of calcium carbonate

sorry I just started chemistry (year 9) :)-Molecular formula of calcium carbonate is CaCO3 Meaning in 2 moles of CaCO3 we have 2 moles of O3 which we can convert to 6 mol of O Molar mass (# grams in

What type of organic molecule is hydrocodone

Is hydrocodone classified as an enzyme, hormone, neurotransmitter, lipid, protein, carbohydrate etc.?How is this molecule classified (what major group of molecule is it part of ?)-Hydrocodone is a syn

Identify the oxidizing agent in the reaction:

8H^+ (aq) + 6Cl^- (aq) + Sn(s) + 4NO3^- (aq) ---> SnCl6^2- (aq) + 4NO2(g)+4H2O(l) oxidizing agent:______ reducing agent:______ 2MnO4^- (aq) + 10 Cl^- (aq) +16 H^+ (aq) --> 5 Cl2(g) + 2 Mn^2+(aq) + 8

If 25 mL of 2.5 M HCl are titrated with 2.2 M NaOH, what is the pH after adding 15 mL NaOH

Equation:NaOH+ HCl → NaCl + H2O 1mol NaOH reacts with 1 mol HCl Mol HCl in 25mL of 2.5M HCl solution = 25/1000*2.5 = 0.0625 mol HCl Mol NaOH in 15mL of 2.2M NaOH = 15/1000*2.2 = 0.033 mol NaOH When r

How do the strengths of organic acids compare with the strengths of most inorganic acids

organic acids are weaker than inorganic acids.The ionization constants for organic are much lower than inorganic.This is mostly due to the non-polar nature of the organic part of the acid.-The rule is

How to name binary compounds? I don't understand :( Please help!!

I dont get it! I feel incredibly dumb :( For example, calcium phosphate is Ca3(PO4)2. Why? It just doesnt make sense to me. What are the rules? If someone could explain to me how to name binary com

I don't understand what I'm doing wrong with these Chemistry problems

Here are a couple problems I cant figure out. 6.071 X 10^-5-8.2 X 10^-6-0.521 X 10^-4 I got76 X 10^5 but thats Wrong, Im not sure what Im doing wrong, if you could write out the steps that would help

What is the total pressure of this mixture of gases

A mixture of three gases contains .50 mol of gas A, 1.00 mol of gas B, and 1.50 mol of gas C. If the mixture is contained in a 25.0 cylinder at 50 degrees Celsius, what is the total pressure of the mi

Theoretical Yield/Actual Yield Chemistry Question

Benzaldehyde undergoes a reaction catalysed by cyanide ions to produce benzoin. 2 Molecules of benzaldehyde produces one molecule of benzoin. If 18.3g of benzaldehyde is used and the percent yield is

Which statement about bidentate ligands is always true

A. forms bonds to two metal ions B. has a charge of 2+ C. does not form a coordination compound D. has two donor atoms E. has medical uses-D

What is the pH level in Chemistry

I keep hearing about pH level, having to do with Acids and Bases, but I dont know what that is?-pH level is the measure of the acidity or alkaline of a liquid. Acids will burn through stuff, depending

What is the molecular formula of a tiltration of potassium permanaganate with hydrogen peroxide

The redox equation for the reaction of hydrogen peroxide with KMn04 is: 2Mn04 + 6H+ +5H202 => 2Mn 2+ + 8H20 + 502 I need urgent help for the molecular formula of a tiltration of potassium permanagan

Approximately how many drops equate to one millilitre

As stated as above :D-One drop is approximately 50 microliters.There are one thousand microliters in a milliliter, so 50 microliters is 1/20 of a milliliter. Therefore there are about 20 drops in a mi

Need help with titration lab questions

HCl+NaOH ----------->NaCl+ H2O What type of reaction: What will the Ph of the solution in the flask be when the concentration of the H3O+ ions is the same as the concentration of the OH- ions? What

Why is this sp2 hybridized

Hi guys, so Im going through my organic chem 1 as a second language book and got to an example where in the molecule it has a hydrogen atom bonded to two carbon atoms. This means that there are two l