Chemistry

How do you set up this equation

Im so upset at myself for forgetting all this chem stuff. Given the equation: 3H2(g) + N2(g) --> 2NH3(g) ... calculate the following: a) the mass of NH3 formed when 1.34mol of N2 reacts w/ excess o

Chemistry: water equilibrium

Could you show full working for this question? Thanks. Lemon juice with a [H+] of 1.6x10^-4 molL-1 was mixed with an equal volume of orange juice with a [H+] of 1.3x10^-6 molL-1 to make a citrus juic

Which of the following elements is an exception to the octet rule and can hold more than eight electrons

AB BBe CNa DS-D -Sulfur Do the dot and cross diagram to find out if unsure.-D

For each of the following ions, indicate the noble gas that has the same Lewis structure as the ion.

1. Se^2- 2. I^- 3. Sr^2+ 4. F^- Can anyone do these and explain how they did them?!-if the ion is +, start at the element and go back until you hit the noble gas if the ion is -, start at the elem

Chemistry HW Help Please (Stoichiometry)

Ok well my chemistry teacher sucks at explaining things throughly, none of my peers understand it either (if they did, Id get help from them before coming here).I understand how to balance the chemica

Chemistry: the pH scale

Could you show full working with this question. Thanks in advance! :) A researcher studying the extraction of alumina from bauxite requires 100mL of a sodium hydroxide solution of pH 12.0 When the st

How to find the pH of a solution

how do i find the pH of a strong acid solution, please in simple terms. Thanks :)-You need a chemical commonly known as universal indicator depending on the color the solution changes tells you if it

Peptides and Amino Acids

The following fragments were isolated from a sample containing an octapeptide (i.e. a peptide containing eight amino acid residues). The first amino acid is Pro. Pro-Gly-Ser Gln-Asp-Ser Asp-Ser-Gly-P

Chemistry: water equilibrium question

Could you solve this with full working? Thanks! :) When you suffer from an acid stomach the fluid in your stomach can contain HCl at a concentration of 2.50x10^-4 molL-1. To reduce this acid you are

What is i^35 + i^78

i¹ = i i² = -1 i³ = -i i⁴ = 1 i⁵ = i -i - 1-i^1 = i i^2 = -1 i^3 = -i i^4 = 4 so i^x is mod4 in x i^35 = (i^4)^8 i^3 = -i i^78= (i^4)^19i^2= 1 1-i is your answer

Solid, Liquid or Gas

Is mud a solid, liquid or gas? Is goo a solid, liquid or gas?? thx x-As someone said... Mud is a COLLOID. Specifically a sol A sol is a a mixture of fine particles suspended in a liquid essentially.

Finding the mass of a substance is a limiting reactant problem

Sodium metal reacts with water in the following single-displacement reaction: 2 Na(s) + 2 H20 -> 2Na0H (aq) + H2(g) Determine the limiting reactant and mass of H2 gas produced when 2.0 g of Na is adde

The reaction taking place between the acid and the alkali is an example of:

The reaction taking place between the acid and the alkali is an example of DecompositionNeutralizationOxidation-Neutralization

Mole fraction question

43) what is the mole fraction of NaCl in a solution that is 2.00 molal in NaCl? The molar mass of H2O = 18.0 and NaCl = 58.5-2.00 molesNaCl/kg H2O* kgH2O/1000 g H2O * 18 gH2O/mole H2O = 0.036 Moles Na

Ksp calculations: How to prepare a "saturated" solution

The Ksp of Ag2CO3 = 8.1*10^-12 A student wants to prepare a saturated Ag2CO3 (aq) solution from a 3.7*10^-4 M AgNO3 (aq) solution. What concentration of Na2CO3 (aq) is required? How do I set this up