A 10.0 ml sample of aqueous HCl requires 24.32 ml of 0.134 M NaOH to reach the endpoint. What is the molar concentration of H_2SO_4? The equation for the reaction is: NaOH + HCl to NaCl + H_2O. A 25.00 mL sample of H2SO...
The enthalpy of a reaction can be used to determine whether the chemical reaction leads to the production of heat or whether heat is required to form the products. Using this knowledge, we can adjust an equilibrium reaction to favor one side. Answ...
Tropomyosin was combined with hcTnT70–170 in a 1:1.2 molar ratio in 100 or 300 mM NaCl, 2 mM MgCl2, 0.5 mM DTT, 10 mM Tris, pH 7.5 and centrifuged at 60,000 rpm, 20°C, for 25 min in a Beckman TLA-100 rotor to remove precipitated protein. F-actin (5 μM final ...
Every element has a different molar mass. For example, one mole of sodium (Na) has a mass of 22.9898 g/mol. One mole of chlorine (Cl) is 35.4530 g/mol. If your solute is table salt (NaCl), it is a compound of sodium and chlorine. To find the molar mass of NaCl, you add the...
Determine the Ksp of lead (II) chloride {eq}(PbCl_2) \text{ at } 25^oC, {/eq} if the molar solubility of {eq}PbCl_2 {/eq} is 0.0143 M. Solubility Equilibrium: For salt compounds with poor solubility in water the dissociation is expressed...
Aqueous solutions of ELP/ELP-PEI copolymers were prepared by altering the overall polymer concentration (0.1, 0.17, 0.3 mg/mL in deionized water), solution pH (3, 7, 10), and salt concentration (0, 0.2, 1 M NaCl). Neat ELP was tested at all solution variations as a control for compar...
This study presents a generic approach to determine these properties of H2O-NaCl-CO2 inclusions, based on petrographic, microthermometic and/or Raman spectroscopic data, invoking mass balance and conservation of bulk molar volume constraints. The generic algorithm is implemented using a combination of ...
The negative logarithm of the transmission τ for the in situ supercapacitor cell corresponds to the sum of cation and anion concentrations (ccat, can) weighted by their respective mass attenuation coefficient \(\left( {\frac{\mu }{\rho }} \right)\), their molar mass M and the electrolyte...
Molar mass acetylsalicylic acid = 180.158g/mol 0.0017475 x 180.158 = 0.314g or 314mg this does not make sense considering I only added 300mg of crushed aspirin powder in the first place, meaning that I would have a percentage purity of 105% ...
Cows fed early perennial ryegrass, which had the highest silage organic matter digestibility (OMD), did not produce the expected amount of energy-corrected milk (ECM) compared with the other treatments based on the amount of OM digested in the gastrointestinal tract, but the reason was unclear....