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say you got 1 exam in 1 weeks time. what is your strategy for taking it on? my strategy. if my exam has 6 topics/chapter.... study 1 chapter a day read the whole chapter for the topic (2-3 hours) look through the study guide and adress all of the objective. (2-3 hours) do all the tut...

a. Pure nitric acid (HNO₃) is a covalent liquid that does not react with dry sodium carbonate. Yet, dilute nitric acid does. Explain this. Something to do with solubility???? not sure.....

How can CN be a triple bond as represented below?? C has a valence of 4. how can it share 3 electrons with N and then still have 2 electrons?

3. A glycoprotein is a protein covalently attached to ____. A) a lipid B) a second protein C) a vitamin D) a carbohydrate anyone know the answer??:)

we have CuCl2.2H20 we add 10ml of water i need to write an ionic equation, how do i start out??? is it just CuCl2.2H20 (s) -> CuCl2 (aq) + H20 (l) or you have to putt CuCl2.2H20 (aq) +H20(l) -> CuCl2 (aq) + H20 (l)

<TR><TD class=heading>Question: </TD><TD>Which of the following is the correct electron structure for Calcium? I thought the electron Structur was 2,8,10 ?? as the 3rd shell can fit 2(n)^2 = 2x3^2 =18 electrons so why is the answer 2,8,8,2? why does it go to the 4th shell when the 3rd...

Anyone else struggling with Microbiology and Physiology? There are so many new terms to learn. And when they are explaining a concept they refer to another bio term to explain the current term. Its like reading in a foreign language. For people who have never done biology in HS, what did u...

<TABLE cellSpacing=0 cellPadding=4 width="95%" bgColor=#9999ff border=3><TBODY><TR><TD class=questbody bgColor=#9999ff colSpan=2><BASEFONT>Based on the solubility rules, which one of the following should be soluble in water? </BASEFONT></TD></TR><TR><TD class=questitem width="5%"...

MC Question How many moles of oxygen are there in 19.71g CO2 ? a 0.493 mol b 0.403 mol c 2.23 mol d 867 mol e 0.896 mol =>12+16*2 = 44g/mol CO2 =>19.7/44 = 0.448mol CO2 This is where i am not sure...

firslty i know the group 1 and 2 elements are all +1 and +2 respectively. thats easy and Flourine-Iodine are -1 Oxygen-sulfer is -2 Nitrogen to phosphoru is -3 is there a way of working out the ionic charge of elements such as nickel,copper, zinc. i.e the elements in the middle. do you...

I know for say HCl its H+ + Cl- however given this H2So4 + 2NaOH -> Na2SO4 + 2H20 how do i write the ionic equation for it? 2H+ ... ?? or H2+ ... ?? or H+ + H+ what do we do for the subscript 2 for the H2SO4 and the 2 mole of NaOH

what 3.25M NaOH is needed to prepare 500ml of 1.0molar solution i can do m1v1=m2v2 i get answer 167ml. however can someone explain logically how to figure this problem out without the m1v1=m2v2 formula?

hi i am new to chemistry. i need to know what CuSO4.5H20 mean whats the "dot" in the middle between Cooper Sulphate and 5 H20 mean? would it be correct that the molecular weight of CuSO4.5H20 is 297g/mol? thanks