# Angel Locsin

Most popular questions and responses by Angel Locsin
1. ## chem

a.)How many moles of NaOH are required to prepare 2.00L od 0.380M solution? answer is 0.760 mole of NaOH (mole/l * 2.00L) b.)What will be the molarity of a solution if 3.50 g of KOH are dissolved in water to make 150.0 mL of solution? answer is 0.52 M KOH

asked on November 30, 2012
2. ## chem

Using LeChatelier's principle, predict the direction of the net reaction in each of the following system as a result of decreasing the volume of the chamber for the reaction mixture. Where does the direction shifts? a.) N2(g)+ O2(g)= 2NO(g) b.)

asked on November 28, 2012
3. ## chem

Predict the direction of the net reaction in each of the following system, as a result of increasing the temperature. Delta H is an indicator or whether the reaction releases heat delta H(-), or heat is absorb delta H(+). Write where the direction shifts.

asked on November 28, 2012
4. ## chem

What is the OH^- concentration of an aqueous solution with H^+ concentration of 10^-4M? Calculate the pOH? pls. help thanks

asked on November 29, 2012
5. ## chem

Can anybody explain to me how to determine the endormicity and exormicity in a reaction and where does the equilibrium shift. Pls. give an example of it. Iwas reading my book and trying to understand but i really can't comprehend it. Now I'm stuck here i

asked on November 29, 2012
6. ## chem

What is the color of a solution that contains two drops of ohenolphthalein in acideic solution? What is the color in basic solution? My answer is the color in acidic turns colorless in basic solution the color will be pink. Pls. correct me if i'm wrong.

asked on November 29, 2012
7. ## chem

Water is the solvent and you can assume the density of water is 1.0g/cc. a.) What will be the amount of solute in grams if the volume is 500 mL and the concentration of solution is 15% w/w? The molar mass of the solute is H2SO4, 98.0g/mol b.) What is the

asked on November 29, 2012
1. ## chem

In our experiment they gave us this eguilibrium to investigate: H2CO3(aq)=H2O(l)+CO2(g) We put soda in a syringe when we push the plunger (increase pressure) there was less bubbles formed but when we pulled the plunger (decrease the pressure) the was more

posted on November 29, 2012
2. ## chem

thanks

posted on November 29, 2012