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Can you explain how to determine which of a number of elements with their respective different orbitals would have the highest first ionization energy and how to find this. Eg. Comparing Li, Ca, N...

Why would ethanol not affect a chromate-dichromate equilibrium? Is it because it wouldn't readily give up an OH- or H+ ion that might alter the chromate-dichromate equilibrium?

Given that activation energy of the forward reaction is 135kJ/mol
For CO + NO2 yields CO2 + NO

I determined the heat of the reaction to be 227.1kJ/mol

Is there more entropy when ethanol and water are mixed or not?

In mixing ethanol and water is the tendency toward randomness, one that favours ethanol and water being mixed or being separated in solution?

In Fe3+ + 6H2O yielding in a reversible reaction Fe(H2O)6 +3, what is the Lewis base?

Considering CH3COOH, K2SO4, KOH, NH3, Ca(OH)2 and C2H5OH, why do some affect a concentration of Cr2O4-2 or Cr2O7-2 and others do not?

Why do some acids and bases affect K2Cr2O4 and others do not?


I am referring to CH3COOH, K2SO4, KOH, C2H5OH, Ca(OH)2 and NH3. As well, why does NH3 act like a base?

If a compound is more solube than another compound, can we say that it is more likely to stay in a given solution than the other less soluble compound would be to stay in that same given solution?

For CO + NO2 ------yielding---CO2 + NO

Given that the activation energy is 135 kJ/mol of CO reacted, how can I find the heat of reaction?

In the dissociation of NaOH into Na+(aq) and OH-(aq) ions, a process that absorbs energy, how is it that, in the end, heat is given off?

Thank you especially on New Year's Day-good to think when most operations are closed

Say I have some experimental data from an exothermic reaction. It is change in temperature information. How do I convert this info into a kJ reading? Specifically, for the dissociation of NaOH into...

Could we say that the reason that NaF has a higher boiling point than NaI is that the bonds of NaF are stronger than those of NaI and that more heat is required to break them than for NaI? Are there...

As always your answers are to the point and I appreciate the speed with which you send them!

How would I describe the hybrid orbital formed by 'mixing' one 'd', one 's' and two 'p' orbitals?

I know the shapes of the individual orbitals but I don't know how they 'mix'.

If 20.0 g of C3H8 and 20.0g of O2 are reacted, how many moles of CO2 can be produced and how do I calculate this?

In the reaction C3H8 + 5O2---yields---3CO2 + 4H2O

If 20.0g of C3H3 and 20.0g of O2 are reacted, how can I calculate the # of moles of CO2 that can be produced?

Yes. Sorry I will stop doing that. I am grateful to Perito for his help.

How can I show that 6ml of 6.0M HCl would or would not be sufficient to react with 3.8gNaHCO3 in

NaHCO3 + HCl---yields-----NaCl + H2O + CO2

For K2CO3 + 2HCl ---yields ---2KCl + H2O + CO2,
How can I find the # of ml of 6.0MHCl that would be needed?

In K2CO3 + 2HCl yields 2KCl + H2O + CO2, to calculate how many milliliters of 6.0 M HCl would be needed do I do this:


6 moles/L X 1L/1000ml. = 6moles X the molecular mass of HCl

In NaHCO3 + HCl-----yields Na Cl + H2O + CO2,

How can I determine whether 1.31 g of HCl would be suffiicient to react with 3.8g NaHCO3

For the following:

K2C03 + 2HCl -----yields 2KCl + H2O + CO2.

How could I calculate how many milliliters of 6.0M HCl would be needed and how many grams of KCl would be formed in the reaction?

In NaHC03 + HCl ----yields NaCl + H20 + C02

if we use 6.0ml of a 6.0M HCl, to calculate the # of moles and # of grams of HCl, do I do the following: 6.0ml X 6moles/1000ml. To get the #...

Also could you look at how to calculate the moles and grams of HCl present in 6.0 ml. of 6.0M HCl solution used as a reactant.

do I start with 6.0ml. X 6.0 moles/1000ml. And get the # of moles...

Thank you so much!!
You're the best

For the reaction:

NaHCO3 + HCl ---yields----NaCl + H20 + CO2

How can we determine the theoretical moles of NaCl produced?

I don't know where to begin.


As well, I need to find the...

Is the balanced equation for the following correct:

NaHC03 + HCl yields NaCl + H20 + CO2

What is the balanced equation for the rxn between NaHCO3 + HCl

is it 2NaHC03 + 2HCl -yields------(arrow to the right) 2NaCl + H20 + 3C02

Is this right?

h(x) = 3e^sin(x + 2)

h'(x) = 3e^sin(x + 2) X cos(x+2)(1)

In finding the derivative of g(x) = (cosx)^3

we get, g'(x) = 3(cosx)^2(-sinx)

but I don't understand how this can be simplified to

g'(x) =...

How can I use lim as h approaches 0 in evaluating

f(x) = 5 + h/x + 7 using f(x) = [f(x + h) -f(x)]/h ?

Hello,

Here's the question f(x) = (x + 1)(x^2 + 2)(x^3 + 3). Find the derivative.

I know that with 2 expressions such as f(x) = (2x^2 + x - 1)(x^3 + x), to find the derivative it's a matter...

What are the steps behind differentiating and simplifying the following:

y = sin^3x

In getting y' = 3sin^2xcosx why do we not get cos^2x?

The question is to find the derivative of y = x times the square root of (3x^2 + 1)

I rewrite this as y = x(3x^2 + 1)^1/2

Then I find y' = x (1/2)(3x^2 + 1)^-1/2 (6x) + 1(3x^2 + 1)1/2

Is...

Pound for pound, which contains more Nitrogen between liquid ammonia and ammonium nitrate?

The particle's motion is described by the equation d = t2 - 8t + 15 where d and t and measured in metres and seconds. Show that the particle is at rest when t = 4.

Is there any value in...

The question is: Find a vector equation of the line that is parallel to the line of intersection o f 3x - y + 2z = 6 and 2x + y - z = 4 and passes through P(5, -1, -3).

Solution: 3x - y + 2z...

A chemist wants to prepare 200mL of a saturated solution of BaF2, the ocncentration of which is 6.3 X 10-3mol/L. what mass of BaF2 will be needed to make up the 200mL. Of the solution.

I said ...

A solution in a vat is found to contain varying quantities of silver, barium and iron(III) ions.
What procedure could be used for separating the metal ions by precipitation?


Would I simply add...

Would gold react with chlorine in considering Au + HCl? And how would I be able to determine this without asking you?

In neutralizing aluminum hydroxide, how do I balance the equation
Is it like this

2Al(OH)3 + 3H2SO4 -----(arrow) Al2(SO4)3 + 6H2O

Is this right ?

2FeBr2+ 2H3PO4 --------(arrow) 2Fe(PO4)2 + 2HBr2

Are the products of calcium + water --- calcium hydroxide + hydrogen gas and is that expressed as CaOH + H2O ----(arrow) CaOH + H2

Are the products of tin + antimony(V)chloride----tin chloride...

What is the formula for hypophosphite and what is the name for BrF?

BrF - what is this

Hypophosphite - how is this represented with letter symbols

Fluorate - " "

How do I calculate the # of atoms in

1) 1.5 mol of CO2

2) 1.5 mol of C


Do I use Avogadro's # and say for 1) 1.5 mol X 6.02 x 10^23 = 9.03 X10^23 molecules of CO2 but then what?

Thank you Perito!!

52.5g divided by 40.08 g/mol = 1.31 moles

1 mole contains 6.02 x 10^23


and therefore 1.31 moles contain 1.31 X 6.02 X10^23 = 7.89 X 10^24