Chemistry

IS the rate law correct

2 NO + Br2 --> 2 NOBr Two step Mechanism NO + Br2 NOBr2 (fast) NOBr2 + NO --> 2 NO2 (slow) 1. What is the Rate Law for this reaction as predicted by this mechanism assuming the Equilibrium Approx. c

Help with balancing chemical equations

I need help balancing these chemical equations please and thank you :) I dont know why, but I have a lot of trouble understanding how to do this. e.Zinc and hydrochloric acid react to form Zinc chlo

Honors Chemistry Help

What volume of carbon monoxide gas at STP is produced from 5.14g calcium phosphate and 6.24g silicon dioxide according , according the following equation: 2Ca3(PO4)s + 6SiO2 + 10c --> P4 + 6CaSiO3 + 1

Rydberg, calculating wavelength

Im supposed to solve for wavelength but my value keeps coming out to 15.4 nm, WAY too small for Hydrogen. If someone could help me out here, it would be much appreciated! This is the equation Ive bee

Why does no reaction occur for this double-displacement reaction

KNO3+Na3PO4 has no reaction and I am confused as to why this is-You do not see a reaction happening because sodium and potassium have very similar properties. Both solutions are clear. If they switch

If an element, X, can form an oxide that has the formula X2O3, then element X would most likely be located...

on the Periodic Table in the same group as (1) Ba (3) In (2) Cd (4) Na The answer is In, but why?-O has a 2- charge. x 3 = 6- 2 x X = 6+ so X = 3+ Elements with a 3+ charge are in column 13 along wit

How Do You Know What Molecules have the LOWERS FREEING POINT

Like if a question were to say something like WHich one has the lowest freezing point A. NaCl B. CoCl3 C. FeCl3 or something like that ( I do not know the question accurately) How can you determin

A 500 mL solution is prepared in which 26.5 g of NaCl, 1.59 g of MgCl2, and 0.315 g of Na2CO3 is mixed and..

then dissolved in water. a) determine the concentration (in M) of Cl- in solution. b) determine the total concentration of all ions (collectively) in solution. My final is tomorrow.I need some hel

Is this an aquireable chemical

I live in the USA, is there any way I could aquire some potassium permanganate legally?-Check this out: http://secure.sciencecompany.com/Potassi…-There is nothing illegal in possessing potassium perma

Very simple Rydberg constant question

Rydberg constant: 1.097 x 10^7 m^-1 My question - what does the -1 after the m mean? Does the -1 after the m mean the equation is read: 1/1.097 x 10^7 m-Oh, no, thats just the notation used to print

Which substance most likely has ionic bonding

P4, KF, C6H6, or Br2 ? And please briefly explain why .. Its on my exam review.-Keep in mind that there are no 100% ionic bonds in compounds.We prefer to classify bonds by their percent ionic characte

What is the net charge of an ion that has 8 protons, 9 neutrons, and 10 electrons

The answer is -2, but why?-The protons are positively charged, and have a value of +1 each. The electrons are negatively charged and have a value of -1 each. The neutrons have no charge, and have a va

Chemistry problem. HELP

Galena, a mineral of lead, is a compound of the metal with sulfur. Analysis shows that a 2.34 g sample of galena contains 2.03 g lead. (a) Calculate the mass of sulfur in the sample. (b)Calculate the

What can be said about the density of a gas compared to its liquid state

Gases are less dense.-density is usually a factor of 1000 less-1 mole of any gas takes up around 24dm3. Not sure if this is helpful but thats all i know.

Is this how to find moles

If you have the mass, its mass divided by molar mass. If you have the # of parts, its # of parts divided by 6.02 x 10^23. Is that right?-Yes thats correct