A student needs to prepare 250mL of a 0.200M aqueous solution of sucrose, C12H22O11 (aq), which is used frequently in biological experiments. what is the value of x?
If 8.45g of CuNO3 is dissolved in water to make a 0.290M solution, what is the volume of the solution in milliliters?
you need to make a solution of NaOH in the lab. You decide to make your solution with 12 g of NaOH in 900 ml of water. You find your solution to have a pH of 10.00, what is the molarity of the... more
Consider the following equilibrium at 461.9 K: NH4HS(s) ⇆ NH3(g) + H2S(g) The partial pressure of each gas is 0.287 atm. Calculate KP and Kc for the reaction.
The answer should be in scientific notation.
Ammonia equation help!
N2(g) + 3H2(g) → 2NH3(g), if you have 3.64 g of H2, how many grams of NH3 can be produced?
question in the description. please help
42g/mol C2H6 32g/mol O2 44g/mol CO2 18g/mol H2O2 C2H6 + 7 O2 → 4 CO2 + 6 H2O201.6 g C2H6 reacts with 400.0g O2 to make water.. What is the theoretical yield of H2O based on the above reactant... more
Arrhenius Equation Calculations
The activation energy for the gas phase isomerization of cis-1,2-diphenylethene is 179 kJ.cis-C6H5CH=CHC6H5trans-C6H5CH=CHC6H5The rate constant at 586 K is 6.55×10-4 /s. The rate constant will... more
1.6 mol Zn and 7.6 mol HCl react according to the equation Zn + 2 HCl −→ ZnCl2 + H2 . If the limiting reactant is Zn, calculate the amount of ZnCl2 formed. Answer in units of mol.
Determine the standard potential for each cell and identify the reactions as spontaneous or nonspontaneous as written. Cd(s) + 2NO-3 (aq) + 4H+(aq) → Cd2+(aq) + 2NO2(g) + 2H2O(l)|
Use the standard enthalpies of formation to determine ΔH∘rxn for the following chemical equation: 2 H2 (g) + O2 (g) →2 H2O (l)
please can i actually please receive help because i have been stuck for many hours
Question 1: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2OIn the above equation how many moles of water can be made when 36 moles of HNO3 are consumed?Question 2: Sodium chlorate... more
For the reaction below, Kc = 9.2 × 10⁻⁵. What is the equilibrium concentration of D if the reaction begins with 0.30 M A?
A (aq) + 2 B (s) ⇌ C (s) + 2 D (aq)
Consider the following balanced chemical equation: Fe2O3 + 3CO → 2Fe + 3CO2 To produce 5.0 moles of CO2, _____ moles of Fe2O3 are required.
One of the decomposition products of ammonium nitrate can be dinitrogen monoxide. How many milliliters of dinitrogen monoxide gas at STP are made from the decomposition on 0.75 grams of ammonium... more
Calculate the amount of heat (in J) required to completely condense 50 g of oxygen at -183 ºC.
When hydrogen peroxide reacts with bleach (sodium hypochlorite), a very explosive reaction takes place. If 3 mL of a 0.45 mol/L solution of hydrogen peroxide reacts with 4 mL of a 0.32 mol/L... more
Chemistry help Ideal Gases
Calculate the moles of gas that has a pressure of 0.32atm at 45L volume and 440K of temperature. Which value of R will you use and what unit. Justify your answer.
A certain oxide of vanadium is 32.02% oxygen by mass. Determine the empirical formula of this compound.
Unit 5 Quiz Review
Calculate the empirical formula for a compound that, through experimental analysis was found to contain 2.20g sulfur and 7.81g fluorine. ____ g S = = ____ g... more
Not all chemical reactions can be represented by net ionic equations. Why can you not write a net ionic equation to show what happens in the following reaction:Carbonic acid (H2CO3(aq)) decomposes... more
Unit 5 Quiz Review
Find the percent of barium in barium phosphate (all numbers are to have 2 decimal places)._____g / ______g x _______% = _______%Please answer and explain.