Chemistry

How do you work out the concentration of a solution

A hydrogen peroxide solution is made up of: 1g potassium iodide 50mL, 1M sulphuric acid 25mL hydrogen peroxide solution How do I work out the concentration of the hydrogen peroxide solution using this

HARD CHEMISTRY QUESTION, HELP!!!!!!

N2O4 > Keq=11, what will be the molarity of each if we start with 1M N2O4, and then the system goes to equilibrium? Hint: Write Keq=, then represent things. Some of reactant is taken away, product is

All of the functional groups of a drug are important because

1. they catalyze biochemical reactions. 2. they interact with specific receptor sites using molecular recognition. 3. signaling pathways depend upon pH which, in turn, depends upon the number and ki

Which of the following has the lowest boiling point

1. PH3 2. H2Se 3. GeH4 4. SiH4 5. HF-4. SiH4, with a boiling point of -185 degrees Celsius.

Help with intro chemistry homework

Consider the following chemical equation: N2 + 3H2 = 2NH3 What volumes of nitrogen gas and hydrogen gas, each measured at 11 degrees Celsius and .998 atm, are needed to produce 5.00 g of ammonia?

Homework help! 10 points for best answer

1.) A sample of butane (C4H10) gas is burned inside a calorimeter that contains 2.0 kg of water. The temperature of the water rises by 10.2 degrees Celcius. How much heat was produced in the reaction?

Please help with chemistry

I dont want the answer, but if someone could explain this to me, Id appreciate it How many moles of solute particles are present in 1.00 mL of each of the following aqueous solutions: a) 0.01 M CuSO4

Can someone classify each of the following reactions

CaO(s) + H2O -> Ca(OH)2 (aq) Fe(s) + CuSO4(aq) -> FeSO4(aq) + Cu(s) NH4NO3(s) -> N2O(g) + 2H2O(g) Thanks!-CaO(s) + H2O -> Ca(OH)2 (aq)=== synthesis, there is only one product Fe(s) + CuSO4(aq) -> FeS

Is fire a solid, a liquid or a gas

Im just wondering, what exactly is fire made up of, and what is it classified as?-Ordinary fire is a mixture of various gases, both reactants and products, so its reasonable to call fire a gas.

Calculate the mass of water produced when 0.333L of 0.500M NaOH is added to 3.0 grams of acetic acid.

The equation is: NaOH(aq) + HC2H302(aq) -> NaC2H3O2 (aq) + H20(l)-Since we have 0.333 L of 0.500 M NaOH, we have: (0.500 mol NaOH)/(1 L NaOH) * (0.333 L NaOH) = 1.665 mol NaOH. Then, since we have 3.

I don't understand stoichiometric calculation Help please

when 84.8g of solid iron(III) oxide reacts with gaseous carbon monoxide what mass of solid iron is produced? I dont get how to do stoichiometric. Is there a simple way to do the calculations? What i

Predict the molecular structure (geometry) of CH4 and SO2

need help please thanks.-CH4 is tetrahedral - 4 bonding pairs, maximum repulsion. SO2 is bent because, although it has two double bonds to each O atom from the S, there is still a lone pair on the S

Which of the following has the highest boiling point

1. H2O 2. N2 3. H2S 4. NH3 5. SO2-N2, H2S, and SO2 are all gases at room temperature, so it cannot be those. Its between H2O and NH3. H2O is going to have the highest boiling point because of its str

What volume of 0.125M H2SO4 is required to neutralize 2.50g of Ca(OH)2

Step-by-step problem solving would be greatly appreciated, thank you.-H2SO4 + Ca(OH)2 → CaSO4 + 2 H2O (2.50 g Ca(OH)2) / (74.0932 g/mol) x (1/1) / (0.125 mol/L) = 0.270 L

Can someone balance these chemical equations for me

H2SO4(aq)+Zn(s)--- -> ZnSO4(aq)+H2(g) HgO - -> Hg+O2 H2O2 - -> O2+H2O C2H6 - -> CH3 Zn + NH4 - -> Zn + NH3+H2 NaCIO - -> NaCIO3 + NaCI HCIO4+P4O10 - -> CI2O7 + HPO3 NaI + HCI - -> HI + NaCI And plea