Chemistry

What is (3s,4s)-4-[(3,4-dimethoxyphenyl)methyl]-3-hydroxy-3-[[3-methoxy-4-[(2s,3r,4s,5r,6r)-3, 4,5-trihydroxy

What is(3s,4s)-4-[(3,4-dimethoxyphenyl)methyl]-… 4,5-trihydroxy-6-(hydroxymethyl)oxan-2-y… and (2r,3r)-2,3-bis[(4-hydroxy-3-methoxyphen… 6-(hydroxymethyl)oxane-2,3,4,5-tetrol and 4-[(e)-2-(3,5-dime

Flame Test Question???!

I did a flame test in my chemistry class and we are trying to find a unknown compund....Our results from the flame test were a orange-red color...We know it could be calcium but what other compounds p

What is the atoms in the following formulas

1) CaSO4 2) Al_2(SO_4)_3 3) K_2SO_4 What is the : Number of SO_4^2- Units ? Number of Sulfur Atoms ? Number of Oxygen Atoms ? Number of Metal Atoms ?-Well if I understand this question (it seems too

Chemistry! calculating pH

Calculate the pH of each of the following strong acid solutions: a) 1.02 g of HNO3 in 250 mL of solution b) 2.00mL of 0.500 M HClO4 diluted in 50.0 mL c) a solution formed by mixing 10.0 mL of 0.0100M

Name two household items that do NOT contain an acid and two items that contain a base.

just a little science.-Contains an acid - Coffee, vinegar, pickles, orange juice, milk, soda Contains a base - that bicarbonate of soda you have in the fridge, Draino or drain opener, washing soda (i

Which of the following quantities represents energy of a chemical reaction that can be used to do work?(CHEM)

(a) ΔS (b) Δ H (c) ΔG (d) None-S refers to entropy - Entropy often refers to the energy content of a process that CAN NOT be recovered. It is also described as chaos. H refers to enthalpy - Enthalpy

What is the equilibrium constant Kc for the reaction

C(s)+O2(g) >>CO(g). When 0.350 mol O2 and carbon were placed in a 5.00L container and heated, the equilibrium concentration of CO was 0.060 M. What is Kc for this reaction? I got 0.17 but I think its

What type of bonds are between the nitrogen atoms in the N2 molecule

A. 1 sigma and 2 pi B. 1 sigma and 1 pi C. 1 sigma D. 2 sigma and 1 pi E. 3 sigma-A. 1 sigma and 2 pi The bond in N2 is a triple bond, and triple bonds have 1 sigma bond, and 2 pi bonds, as is consis

Most organisms use the same reaction to supply the free energy needed to carry out biological process: (CHEM)

This reaction ( ΔG=-30.5kJ is the Hydrolysis of (a) glucose (b) DNA (c) RNA (d) ATP (e) fatty acids Hope can somebody help me to decide which one is the right asnwer!! Its confusing THANKS!!-D

Finding Formula of a hydrate~Chemistry

The formula for Epsom salts can be written as MgSO4 - xH2O, where x indicates the number of H2O moles ofper mole of MgSO4. When 4.555 g of this hydrate is heated to 250 degrees C, all the water of hyd

Are 1 mole of water has a mass equal to 1 mole of steam or 2 mole of H and 1 mole of O

When water turns from liquid to steam, the molecules of water remain intact. So, steam is composed of H2O molecules moving about. Steam is not composed of a mixture of H and O. The way your question

If you dilute a strong acid with water, will the pH of the solution rise or remain the same

If it rises no explanation is needed but if it stays the same could you pleases explain why. Thanks in advance, Fergus-It would increase. The strong acid is already in aqueous solution, and thus has

Calculation of Heat Vaporization

Question: Methane has a boiling point of -164 °C at 1.0 atm and a vapor pressure of 42.8 atm at -100 °C. What is the heat of vaporization of methane? I have the final answer for this one but no matte

What is the ionic equation of K2SO4(aq) + Ba(NO3)2(aq) -> BaSO4 + 2KNO3

ionic, not net ionic thanks!-K+ SO4 2-+Ba2+ NO3---->BaSO4+K+ NO3- soluble saltsoluble saltinsoluble saltsoluble salt cut down all soluble salt ions at both side it will leave only SO4 2-+Ba2+--->BaSO

Is it really true that in a skeletal formula it doesn't matter what end you count C1 from when attaching ....

a functional group?Thats what my teacher said but I dont trust her and it doesnt say anything specific in the text book. /\/\/\/E.g would it matter if I put methyl ( I ) on either end starting the cou