sparkle

i need to research italy including a map food by different regions and include receipes on how to make pizzas lasagna and spaghetti bolognese. thanks guys !

17 years ago

A diamond contains 0.090 moles of carbon what is the mass of the diamond

15 years ago

If 740. mL of 0.06622 M aqueous NaI and 370. mL of 0.07151 M aqueous Pb(NO3)2 are reacted stoichiometrically according to the equation, what mass (g) of NaI remained? Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)

15 years ago

1) If 740. mL of 0.06622 M aqueous NaI and 370. mL of 0.07151 M aqueous Pb(NO3)2 are reacted stoichiometrically according to the equation, what mass (g) of NaI remained? Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq) 2) If 180 mL of 0.581 M aqueous HCl...

15 years ago

If the initial concentration of F(g) is 8.285 mol/L, calculate the % decomposition of F(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kc at 927.0 °C is 370.00. The initial concentration of the reaction products...

15 years ago

At 625 K the value of Kc for the equilibrium represented by the balanced equation is 2.50 x 100. Calculate the value of Kp at the same temperature. Express answer in scientific notation. 2NH3(g) = N2(g)+3H2(g)

15 years ago

The value of the equilibrium constant, Kc, at a certain temperature is 4.00 x 10-1. Would the reaction as represented by the chemical equation favor reactants or products? Enter P or R. N2(g)+3H2(g) = 2NH3(g)

15 years ago

please help! If the initial pressure of I2(g) is 1.738 atm, calculate the % decomposition of I2(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1000 K is 0.254. The initial pressure of the reaction products...

15 years ago

When a sample of NO(g) (388.1 grams) is placed in 290.0 L reaction vessel at 500.0 °C and allowed to come to equilibrium the mixture contains 53.28 grams of N2(g). What is the concentration (mol/L) of O2(g)? 2NO(g) = N2(g)+O2(g)

15 years ago

When a sample of HI(g) (5.825 mol) is placed in 320.0 L reaction vessel at 702.0 K and allowed to come to equilibrium the mixture contains 1.052 mol of H2(g). What is the equilibrium concentration (mol/L) of HI(g)? 2HI(g) = H2(g)+I2(g)

15 years ago

Calculate the [CH3NH3+] of a 7.02×10-3 M solution of the weak base CH3NH2 (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. CH3NH2 + H2O = CH3NH3+ +...

14 years ago

Balance the equation in aqueous basic solution: ClO3-(aq) + Fe(OH)3(s) → FeO42-(aq) + Cl-(aq)

14 years ago

Balance the equation in aqueous acidic solution: C2O42-(aq) + MnO4-(aq) → Mn2+(aq) + CO2(g) please teach me how to do it!

14 years ago

Balance the equation in aqueous basic solution: Fe(CN)64-(aq) + Ce4+(aq) → Ce3+(aq) + Fe3+(aq) + CO32-(aq) + NO3-(aq)

14 years ago

The base dissociation equilibrium constant (Kb) for C5H5N is 1.40×10-9 (eq. 1). (eq. 1): C5H5N(aq) + H2O(l) = OH-(aq) + C5H5NH+(aq) Calculate the value of the equilibrium constant (Ka) for the hydrolysis of C5H5NH+ as shown in the reaction (eq. 2). (eq. 2...

14 years ago

A solution of C6H5CO2Na hydrolyzes according to the equation. If the [C6H5CO2H] in the solution after hydrolysis is 0.00000294 M, calculate the equilibrium concentration of C6H5CO2Na. C6H5CO2-(aq) + H2O(l) = OH-(aq) + C6H5CO2H(aq) Kh=1.59×10-10 What does...

14 years ago

The rate of the following reaction: 2 NO2 2 NO + O2, is characterized by the rate constant k = 0.775 L·mol-1s-1. What is the half-life for this reaction at the same conditions when the initial concentrations are 0.0115 M? (Round your answer to 3 significa...

14 years ago

how do you balance this redox equation? Co(OH)2(aq) + Na2O2(aq) → Co(OH)3(s) + NaOH(aq)

14 years ago

The voltaic cell described by the balanced chemical reaction has a standard emf of 4.05 V. Calculate the equilibrium constant (Kc) for the reaction at 25 oC. Round your answer to 3 significant figures. F2(g) + Mn(s) → 2F-(aq) + Mn2+(aq) Mn2+/Mn -1.18 F2/F...

14 years ago

In two kinds what change the daughter's attitude about becoming a prodigy? 1. She sees her mothers disappointment after she fails a test. 2. She realizes she will have to play the piano 3. She realizes that Waverly has a natural talent for chess. 4. She u...

6 years ago

thank youu!

15 years ago

i don't understand..

15 years ago

i did.. it was wrong for the last time

15 years ago

for the last time i did it*

15 years ago

wrong..

15 years ago

initial: I2 = 1.738 atm 2I = 0 change: I2 = -2x 2I = x equilibrium: I2 = 1.738 - 2x 2I = x so i set the equation as 0.254 = x/(1.738 - 2x) and i solved for x. i got 0.292 and after that how do i get % decomposition?

15 years ago

I tried doing that but the value was so high that I wanted to compare answers with something you would get DrBob222. My answer was something e^136

14 years ago

Thank you all the answers are correct! thanks, Warrior Cat Lover! I got a 100 on my quick check

6 years ago