Predict what happens when lead is added to nitric acid. a No reaction occurs. Oxygen is released. Lead oxide forms. Hydrogen is released.

Q: Rank the following solutions from brightest (1) to weakest/no light (6) when the solution's…

A: Equivalent conductance is inversely proportional to the normality of the solution and  normality is…

Q: The volume of 0.16M NaOH needed to react with 40 mL of 0.12M H2SO4 is     30 mL     40 mL…

A: Given Molarity of H2SO4 = 0.12 M Volume of H2SO4 = 40 ml = 0.04 L Molarity of NaOH = 0.16 M

Q: Q11) The following symbol indicates a) Toxic chemicals b) Oxidizing reagent c) Harmful iritant d)…

A: A substance that may cause irritation to skin , eyes or inside our body is called harmful irritant.

Q: A 786 mLmL NaClNaCl solution is diluted to a volume of 1.19 LL and a concentration of 3.00 MM . What…

A: Solution :       The amount of moles in the solution remains constant even after dilution. The…

Q: Make the handwriting legible please

A:

Q: What is the composition of Fehling’s Solution? What is the composition of Benedict’s

A: We have to tell about the composition of fehlings and Benedict's solution

Q: A 887 mLmL NaClNaCl solution is diluted to a volume of 1.45 LL and a concentration of 6.00 MM . What…

A: The initial volume of the NaCl solution is = 887 mL The initial concentration of the solution is =?…

Q: None

A:

Q: What is Dissolved Oxygen?

A: Oxygen enters a water body from the atmosphere and, generally in areas where groundwater meets into…

Q: A lake water sample was analyzed. During analysis of dissolved oxygen using Winkler's method,…

A: To survive aquatic life they need oxygen. The source of oxygen for aquatic life is dissolve oxygen.

Q: Table 1 Densities of salt solutions determined at 23.4°C. Concentration 1 3 10 15 Unknown (%)…

A: Density is defined as the mass per unit volume. It is represented by rho . Its relation is as…

Q: List the Effect of Solutes?

A: Solution is made up of two components which are solute and solvent. The one which gets dissolved…

Q: 50 g of NaCl has been dissolved in water to come up with a 120 mL of solution. The saline solution…

A:

Q: 15 g of solute is mixed with 100. g of solvent. The m/m% of this solution must be ___________ 15%.…

A: There are several ways of expressing the concentration of a solution by using a percentage. The…

Q: GIVE THREE REASONS THAT AIR IS DETRIMENTAL TO A HYDRONUC SYSTEM

A: The following are the reasons that air is detrimental to a Hydronic system: Dissolved air present…

Q: How many milliliters of 11.5 M HCI(aq) are needed to prepare 725.0 mL of 1.00 M HCI(aq)? V = mL

A:

Q: 60.0 mL of a 0.800M NaCI solution is mixed with 80.0 mL of a 0.500M KBr solution. What is the new…

A: Here 60 ml of 0.8M NaCl solution was mixed with 80 ml of 0.5 M KBr solution. We have to find new…

Q: Which pair of compounds would both be insoluble in water? O KOH and LiOH O NaNO3 and CaCO3 O…

A:

Q: Kidney stones are formed via precipitation reactions. A) True B) False

A: The answer to the given question is as follows--------- when a substance is not dissolved in urine…

Q: 8 T mixed with distilled water 300mL. What is the final concentration

A: Given data :  1. No. Of tablespoon = 8 T  2. Volume = 300 mL

Q: lution 01 0.0500 M NaOH Volumes: Initial 45.16 mL 42.93 mL Final 21.38 mL 18.78 mL Used Average Used…

A: The values as calculated Initial 45.16ml 42.93ml Final 21.38ml 18.78ml Used 23.78ml 24.15ml…

Q: Complete the table below and show the complete solution. a. 6.0024 b. 1.0011L c. 0.0021L d.…

A: Volume of gas is directly proportional to temperature

Q: Choose the substance that is classified correctly? O NaF is a basic salt in aqueous solution O FeBr3…

A: NaF is mixture of strong base and weak acid so resulting nature of salt is basic. In FeBr3 HBr is…

Q: 11) How many milligrams of tetrhydrozoline HCI would be used in preparing the following…

A: Percent of tetrahydrozoline HCl = 0.05%Volume of the solution = 15 mLmilligrams of tetrahydrozoline…

Q: 1. How many grams of Ca(OH)2 are needed to neutralize 25.0mL of .100M HN03? The reaction proceeds as…

A:

Q: How many milliliters of 0.450 M H3PO4 is required to neutralize 1.55 L of 0.0945 M Ca(OH)2? Balanced…

A: At the complete neutralization, No of moles of acid = No of moles of base As molarity = No of…

Q: 12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm…

A: Given: Concentration of nitrates in drinking water (EPA Standard) = 10 ppm Concentration of nitrates…

Q: is 40% aqueous solution of formaldehyde * Your answer

A:

Q: Prepare 2. Serum vitamin C concentration is 0.9mg/dL. Express this concentration in umol/L…

A: The solute in solvent is called solution. The amount of solute in solvent is measure in terms of…

Q: A sample of KHP (molar mass = 204.23 g/mol) required 28.0 mL of NaOH solution (0.0832 M) to reach a…

A: Given: The molar mass of KHP (potassium hydrogen phthalate) is 204.23 g/mol The volume of NaOH…

Q: Solution 2: 10 mM ammonium nitrate, 20 mM potassium permanganate, 2% SDS, 25 mg/ml Lysozyme, 1 mM…

A: Using the molarity expression: By putting the values:m = 10 x 10-3x 80.043 x 2.5 gm = 2.001 g

Q: Assume that vinegar is a 0.852 M solution of acetic acid (HC₂H30₂) in water. What volume of 0.2136 M…

A:

Q: A sample is analyzed for Lead. Is the ppm in the dry sample containing Lead greater than, equal, or…

A: A question based on qualitative analysis, which is to be accomplished.

Q: Concentration of hydrogen peroxide solution (mM 176.0 Temperature of iodide solution (\deg C) 25.0…

A: The concentration of hydrogen peroxide solution = 176.0 mMThe volume of hydrogen peroxide = 7.5…

Q: A group of students completed an experiment to determine the effect of temperature on the solubility…

A: The graph can be made using the given data values using Excel.

Q: What is the name of the following reaction? hydration H+ H₂O

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: 5. Describe what happens to the dissolved oxygen concentration as the temperature of the water…

A: Please find your solution below : Dissolved oxygen is defined as the amount of gaseous oxygen…

Q: How many mL solution should be taken from 0.900 M K2SO4 solution to prepare 250 mL of 0.450 M K2SO4…

A:

Q: Discuss the importance of boiling point elevation, vapor pressure lowering and freezing point…

A: Colligative properties are the properties that depend on the number of atoms or molecules or ions…

Q: 1.A convex meniscus in burets is an indication of all the following , except: Select one  a .…

A: 1. A convex meniscus in burrets is an indication of all the following , except: Select one a .…

Q: How would you prepare 165 mL of a 0.996 M NaOH solution, starting with a 5.71 M stock solution?

A: The molarity of a solution is given by:

Q: How many milliliters of 0.105 M HCl are needed to completely neutralize 40.0 mL of 0.108 M Ba(OH)2…

A: Molarity is defined as the moles of solute dissolved per liter of solution.

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.