Chemistry

Chemistry question helpppp!!!!

In order to prepare a 0.0500 M NaOH solution, to what volume would you dilute 25.0 mL of 2.50 M NaOH? I like to know how to get the answer cause i dont get it.-New volume = (2.5/0.05) x 25 ml.-For all

What is the mass of 3.5x10^23 molecules of CO2

How did you get the answer? D; please help I just dont get it-1 mole CO2 (molar mass=44) has 6.023x10^23 molecules So mass of 3.5x10^23 molecules = (44 x 3.5x10^23) / 6.023x10^23 =25.57 g

Help in calculating glucose in chem

Top ranking cyclists can metabolise more than 80 mL of oxygen per kg of body weight per minute (sometimes called the V-O2 max). Calculate the mass of glucose (in grams) that could theoretically be con

Help with molarity in a solution

A student placed 19.5 grams of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- ML mark on the nec

Limiting Reactants Question

You allow 75g of carbon monoxide to reactive with 58g of hydrogen according to the following process. Determine the limiting reactants and the amount of methanol produced. CO (g) + H2 (g) -> CH3OH (l

Chemistry/ Algebra Problem been wracking my brains.

An organic liquid is a mixture of methyl alcohol (CH2OH) and ethyl alcohol (C2H5OH). A 0.220g-sample of the liquid is burned in an excess of O2(g) and yields 0.362g CO2(g)(carbon dioxide). Set up two

Is a nucleophile also a Lewis and Bronsted base

A Bronsted base is a species capable of accepting a proton like OH-, NH3. It may have a charge or be neutral. The concept is generally applicable for reaction in aqueous solution where protons decide

Find the pH and pOH of solutions with the following [H+];classify each as acidic or basic

a) [H+]=1.0M b) [H+]=6.8x10^-8M-a) The soln. is highly acidic and pH= - log[H+] = - log [1.0] = 0 ( pH is zero) and pOH = 14.0 b) The soln. is basic and pH = - log [H+] = - log [ 6.8 x 10^-8] = - [-

Calculate the molarity of a solution consisting of 60.0g of NaOH is l.50 L of solution

How do you do this? Steps cause other wise i cant do the other examples i have! 10 points!-Okay, we need to know how many moles of NaOH we actually have, and this is given by mol=mass/mr. The Mr of Na

Arrange the acids in order of increasing acid strength from the weakest to the strongest

Consider the acids: Acid: A =1.6x10^-5, B=9.0x10^-4, C=2.0x10^-6, D= 3.0x10^-4 Which acid has the smallest pKa value?-Acid strengthC Acid B has the smallest pKa = - log Ka= -[ -4 + 0.9542] = 3.0458

3.00moles of NaOH (sodium hydroxide)are needed to prepare a solution.What mass of sodium hydroxide is required

Please explain how you got the answer Im so confused. Step by step!!! Please and thank you-one mole of NaOH = 40 g 3 moles = 40 X 3 = 120 g

Help chemistry question!!!! 10 points

5.06 moles of iron (II) phosphate, Fe3(PO4)2, are produced in a reaction. What mass of iron (II) phosphate is produced?-Fe3(PO4)2 mol.mass = (Fe:3 x 56) + (P:2 x 31) + (O:16 x 8) = 168 + 62 + 128 = 35

A conversion (dimensional analysis) Chemistry problem

Okay So I understand basic dimensional analysis but problems with a certain value per certain value confuses me. I AM NOT ASKING FOR THE ANSWER, (unless you want to give it to me) but simply how wou

Cs has a higher ionization energy than Na

True or false ?-It is false. Remember that the ionization energy is the energy necessary to take an electron from the atom. Both Cs and Na have only one electron in their last level, so they have a

Chem homework help please

Calcium is more electronegative than fluorine true or false?-false