Silicon (Si) has three naturally occurring isotopes: 28Si, 29Si, and 30Si. Determine the number of protons, neutrons, and…
A compound contains C, H and S. Elemental analysis performed on 172.5mg sample produced 299.0mg CO2 and 163.2mg H2O….
http://news.yahoo.com/drugs-previously-thought-toxic-may-stop-spread-cancer-200408307.html How does this article relate to chemistry? Or does it?
1.Complete NaOH + ? ->NaHCO3 C+4HNO3->CO2 + 4NO2 + ? ? +CO2 -> Na2CO3 CO2 ? -> H2CO3 2. Please specify contained on whose molecular formula is: a) CO2 b) (NH4)2CO3 c) MgCO3 d) Al2 (CO3)3 f) NaHCO3 Find valence of carbon in each of them. 3.Write formulas of substances a) Barium […]
The creation of a weak acid titration plot is described in chapter 10-5 of your technique book. A generic four-step procedure is given. Rewrite the four steps to be a specific prcedure to be used to titrate a sample of potassium hydrogen phthalate (MM 204.22 g/mol) using the NaOH soluiton you will prepare.
What similarities are there between the liquid and gaseous states of matter? What difference are there between the two states?
with substitued halocyclohexanes e2 elimination must occur with a ____________ diaxal arrangement of H and X. Fot this reaction the…
I have calculated the answers to Steps A, B & C. I need help with Step D only. Please answer STEP D 1. When 50. mL of 0.50 M formic acid is titrated with 0.50 M sodium hydroxide, calculate the pH: a) before any of the titrant (NaOH solution) is added, […]
A compound X contains the elements carbon, hydrogen, and oxygen. After 35 g of X were burned in pure oxygen, 59 g of combustion products containing CO2 and H2O were isolated. A follow-up analysis showed that the combustion products contained 37 g of oxygen. What is the mass of oxygen in 30 g of X?
Lime water is a saturated solution of calicum hydroxide. Describe how you would prepare a limewater solution to be used…
