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Chemistry Questions
I need help with this please. 1. Calculate the volume of a 0.1M NaOH that 40.0...
The amount of energy released by burning a fuel source, measured in energy per mass, is...
If 500g of water is added to 75g of 2.5 m of NaCl, what is the...
Give the delta S, and delta H (heat of fusion) for ice melting at STP. Use...
Calculate the root-mean-square velocity of nitrogen gas at 273 K.
Ribonuclease (RNase) usually have the highest activity at pH=5. If we plan to prepare a buffer...
Solute Mass(g) Observed Freezing Point (Celcius) m i Theoretical Freezing Point (Celcius) NaCl 2.94g -1 CaCl2...
a powder has a mass of 40.0 g. when the powder is added to 30.0 ml...
What is triple equality of S8 and Al2 from equation ,Al+S8 - Al2S3 and molar mass
Suppose a solution contains a mixture of 0.22 M methamphetamine (pKb = 4.50) and 0.19 M...
For the following reaction, 128 grams of sulfur dioxide are allowed to react with 18.0 grams...
Which of the following processes is/are spontaneous? a. A tornado forms. b. A broken cell phone...
If [H3O+] = 10-6M, provide the hydroxide ion concentration [HO-] by performing a calculation using equation...
Identify the physical quantities used to describe gases and corresponding symbol representing each variable. For each...
A total of 581 cal of heat is added to 5.00g ice at -20 C. What...
1300 kg of methane (CH4) is burned in a combustion reaction. How much CO2 is produced...
Propose and experiment that would allow you to separate sand from water. And classify if a...
What is the pH of a 0.55 M solution of Al(H2O)3+6 if the Ka for the...
What volume in milliliters of 9.950×10−2 M sodium hydroxide solution is required to reach the equivalence...
Acetaminophen, C8H9NO2 1. What is the HDI (Hydrogen Deficiency Index) for your compound? 2. How many...
Consider the reaction CO2(g) + H2(g)CO(g) + H2O(g) where S° rxn = 42.1 J/K Using standard...
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid,...
A sample of sodium azide (NaN 3), a compound used in automobile air bags was thermally...
Experimental data is collected for the reaction shown below, with the following rate law: rate=k[NO2]2. What...
(1) Which of the following statements is correct for the equation shown here? 4NH3(g) + 5O2(g)...
1.how many moles in 250.0 mLof a 0.15 M nitric acid solution? 2. what volume of...
Consider the following equilibrium, for which Kp = 7.48×10−2 at 480 ∘C: 2Cl2(g)+2H2O(g)⇌4HCl(g)+O2(g) Part A. Determine...
can you prepare buffer solution using tartaric acid and its salt?
Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where ΔrH∘ = -799...
Lab Prodecure Question - To determine the standard Gibbs free energy for the dissolution of barium...
1. The initial concentrations or pressures of reactants and products are given for each of the...
The decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)½ H2(g) + ½...
Part A Calculate the enthalpy change, ΔH, for the process in which 42.4 g of water...
A) ( 7.72×10^6 )( 7.54×10^5 ) = B) 9.89×10^4 - 7.54×10^5 / 7.89×104 = This is...
Be sure to answer all parts. Complete the table of isotopes, each of which has found...
if 0.75 mol of gas has an initial volume of 18L, what is the new volume...
When CO 2 is bubbled into water at pH 7, the pH decreases. True or False?
What is the pH difference between a buffer solution (Solution A) of 0.95 M HCOOH and...
What is the function of the carbohydrate moiety that is attached to EPO? Will rate for...
A 3.82 g piece of limestone contains 2.62 g of CaCO3. Based on these results, what...
A certain first order reaction has a rate constant of 0.029 min-1. How much of the...
choose a source of radiation and discuss each of the following a. Is the radiation ionizing...
1.How does the description of electrons from General Chemistry compare to that presented here? 2.What is...
A child needs his IV to have a dosage of 0.025g Amillomox per mL. How many...
At 298.15K, ΔG°f(HCOOH,g) = -351.0kJ mol-1 and ΔG°f(HCOOH,l) = -361.4kJ mol-1. Use R = 8.3145 J...
Part A: If a reported value of 45 mg/dL had a -10% relative error, what was...
Calculate the mass, in grams, of calcium acetate that must be added to a 500-mL volumetric...
For phosphoric acid, pKa1 = 2.16, pKa2 = 7.21, and pKa3 = 12.32; which of the...
A volume of 500.0 mL of 0.160 M NaOH is added to 605 mL of 0.200...
24.1 kJ of energy is lost by a 251 g Al block. If the block is...
If 48.24 mL of a standard 0.1231 M NaOH solution is required to neutralize 15.14 mL...
Draw the titration curve with charges, pI and structures of proline
A sample of argon gas is at a pressure of 1.24x104 kPa and a temperature of...
1. An electron transitions from the n = 6 to the n = 4 quantum state...
1a) Use the standard reduction potentials to calculate the standard free energy change in kJ for...
Calculate the number of molecules present in each of the following samples. (a) 0.650 mol acetylene,...
what is the ionic strength of a buffet that is made to be 0.0997 M NaH2PO4...
When 15.0 mL of a 5.46×10-4 M calcium chloride solution is combined with 18.0 mL of...
What is the difference between induced fit and preferential transition state binding?
What is the silver ion concentration in a solution prepared by mixing 371 mL 0.377 M...
Bioremediation (will be discussed further in class on 3/22): Isopropyl propionate (IPP- C6H12O2) has been considered...
A Titration used 24.5mL of 0.10M KOH to neutraliz an acid. How many moles of KOH...
Write the state of matter for every substance in the chemical reaction. Explain your limiting reactant...
Predict the order of the N-O bond strengths in NO. NO+, and NO-. Enter answers numerically...
a compound consisting of C, H, and O only has a molar mass of 262.3 g/mol....
Imagine that you are working at a lab station (at the Mountain Dew factory) with an...
The saturation concentration of dissolved oxygen in freshwater can be calculated with the equation, ln Osf...
Determine the volume of 0.220MKOH solution required to neutralize each sample of sulfuric acid. The neutralization...
trans-Cycloheptene (C7H12), a strained cyclic hydrocarbon, converts to cis-cycloheptene at low temperatures. This molecular rearrangement is...
If 2.34 mL a 0.219 M solution of oxalic acid is mixed with 11.11 mL of...
Biochemistry 3. How to analyze the concentration and molecular weight of proteins?
3) What would be the spectator ion(s) when solid iron reacts with a copper (II) sulfate...
The reaction A ---> products was studied at a series of different temperatures. A plot of...
Calculate the volume of 54.0 g of C2H2 gas at standard temperature and pressure (STP). Use...
6.) Provide short answers for the questions about protein structure below: a.) True or False, amino...
Hydrogen peroxide is unstable and decomposes readily: 2H2O2(aq) → 2H2O(l) + O2(g) This reaction is accelerated...
Three liquids with the highest boiling point? the name and formula
Consider the transport of K+ from the blood (where its concentration is about 4 mM) into...
Calculate the mass of glucose (C6H12O6) in a 110 mL sample of a 1.16 M glucose...
A and Z are independent events. The probability that A occurs is 1/4. What is the...
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