Use the References to access important values if needed for this question. 42.7 mL sample of a 0.588 M aqueous nitrous acid solution is titrated with a 0.279 M aqueous potassium hydroxide solution. What is the pH after 62.9 mL of base have been added? K₁ for HNO₂ is 4.5 x 10-4. pH =

Q: A 0.450 M solution of KCI needs to be prepared through dilution. A 2.00 M stock solution will be…

A: Given :-  initial concentration = 2.00 M (stock solution)  initial volume = 0.250 L  final…

Q: Heroin, a tertiary amine, is a weak base because it contains a nitrogen atom with a lone pair of…

A: Mass of the sample mixture taken for titration = 75.000 mg  Molar mass of Heroin = 369.4176 g/mol

Q: The solubility of ferrous carbonate (FeCO3) at 20oC is 0.00066g/L. That is, 0.00066 g FeCO3 can be…

A: Given: The solubility of ferrous carbonate = 0.00066g/L  If we have known that 0.00132 g FeCO3 has…

Q: A 0.2417g sample of a compound composed of C,H,O,CI only, is burned in oxygen yielding 0.4964g of…

A: Mass of the sample 1 = 0.2417 gAtoms present in compound = C, H, O, ClMass of CO2 obtained = 0.4964…

Q: 30jud to 28AM 5. Sodium carbonate is a reagent that may be used to standardize acids in the same way…

A:

Q: Consider the following reaction and that H2CO3 is a weak acid, H2CO3 + H2O ==== HCO3- + H3O+. If…

A: Acid can be defined as a species that give hydrogen ions in solution. Acid can be weak or strong on…

Q: Consider a 0.238 M aqueous solution of sodium hydroxide, NaOH. How many grams of NaOH are dissolved…

A: Since,             Number of moles = Concentration × Volume

Q: Sodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used…

A: Given, HCl(aq) + NaHCO3(aq)  → NaCl +  H2O(l) + CO2(g) Molarity of HCl solution = 0.052 M = 0.052…

Q: snip

A: Formation reactions are equations that show the formation of 1 mole of a substance from its…

Q: The solubility of ammonium formate, NH,HCO₂, in 100. g of water is 102 g at 0 °C and 546 g at 80 °C.…

A: Given 546 g of NH4HCO2 dissolves in 100g water at 80°C 102 g of NH4HCO2 dissolves in 100g water at…

Q: 2. The arsenic in a 1.203-g sample of a pesticide was converted to H3ASO4 by suitable treatment. The…

A: Given that,Weight of pesticide = 1.203gVolume of  = 40 mLMolarity of = 0.05871 MVolume of  = 9.63…

Q: Write an equation, with phases, for the reaction between nitric acid and calcium carbonate

A: CaCO3 reacts with HNO3 present in rainwater( acid rain). That is why statues made of marble (CaCO3)…

Q: (Q95) Given the hypothetical reaction A (g) 3 B (g), that has an equilibrium constant of Keg 0.173.…

A: Given :- For the reaction., A  <=====>  3B [A] = 0.442 M [B] = 0.395 M Keq = 0.173

Q: How do I convert 3485.5 K cal to Joules?

A: The conversion of 3485.5kcal to calories is as follows:

Q: 1. 1 N NAOH .N. 2. aq. HCl (workup) H3C `CO2Et

A:

Q: What volume of0.317 M KOH solution will be required to titrations 25.00 mL of 0.285 M HN O3

A: The molarity of a solution is defined as the ratio of the number of moles of solute that are present…

Q: if .1800g of impure soda ash NaCo3 is tirated with 15.66 mL of .1082 M of HCL what is the percent…

A:

Q: In a reaction, the components of water (H-OH) are added across a carbon-carbon double bond (C=C). A)…

A: Water added to unsaturated compound like alkene or alkyne to form alcohol.

Q: When 13.99mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given : Concentration of NaOH = 3.172 M Volume of NaOH solution = 15.00 mL = 0.0150 L…

Q: Which of the following diagrams best represents the hydration of Nal when dissolved in water? The I…

A: Sodium iodide (NaI) is a strong electrolyte and dissociates completely into an aqueous solution.

Q: Write the molecular equation for the reaction of iron(III) bromide with potassium carbonate. A)…

A: Precipitation reaction: The reaction in which two solutions containing soluble salts are mixed and…

Q: When the following equation is completed and balanced, what is/are the product(s)?…

A: Given that,  solid magnesium oxide (MgO) undergoes reaction with aqueous hydrochloric acid (HCl).…

Q: 3$:);)):$$;&(&;$:$

A: Step 1: Step 2: Step 3: Step 4:

Q: Q52) Suppose that a solution that is 0.0334 M in sodium chloride and a solution that is 0.0334 M in…

A: Balanced reaction is  2 NaCl  +  Sr(NO3)2  -->  SrCl2 + 2 NaNO3   When NaCl(sodium chloride)…

Q: Table of solubility properties 1.0 M Na2SO4 (sulfuric acid) 1.0 M Na2CO3 (sodium carbonate) Ba2+…

A: Solubility refers to the ability of a substance to dissolve in a particular solvent to form a…

Q: NAMES: SECTION: Trial #1 Trial #2 1. Mass of the filter paper,g 0833 0862 Mass of filter paper and…

A: Hello. There are multiple questions posted together. The first question has been solved. To receive…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.