2) A sample of clean air is found to contain 20.45% oxygen gas by volume. How many liters of oxygen gas are present in a 65.0 μL sample of this air?

Q: The solubility of (NH4)2SO4 in water is 75.4 g of (NH4)2SO4 per 100 g of water. 34.2 g of (NH4)2SO4…

A: Solubility is defined as the maximum amount of solute that is dissolved in 100g of solvent. This…

Q: How much water, in mL, needs to be added to 29.7 mL of 11.2 M HNO3 to make a 6.05 M solution with…

A: Given values,  V1 = 29.7mL N1=11.2M N2=6.05M And V2=?

Q: The solubility of (NH4)2SO4 in water is 75.4 g of (NH4)½SO4 per 100 g of water. 62.2 g of (NH4)2SO4…

A: Solubility of any salt is defined as the maximum amount of solute that can be dissolve in a solvent…

Q: Concentrated hydrochloric acid is an aqueous solution that is 30.50 % HCl. The density of the…

A: Given that,  A concentrated HCl solution contains 30.50% HCl in an aqueous solution.  Density of HCl…

Q: For the chemical reaction 2C4H10(g) + 1302(g) → 8CO2(g) + 10H₂O(l) assume that 13.4 g of C4H10…

A:

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A:

Q: A 1.00 L bottle of wine, labeled as 8.5% (by volume) ethanol, is found to have a defective seal.…

A: When oxygen is leaked into the wine, it reacts with ethanol forming acetic acid and water.

Q: A patient received 2.95 L of a 0.278 M glucose IV solution. How many moles of glucose were…

A: For glucose IV solution, Volume = 2.95 L Molarity = 0.278 M                             (As, 1M = 1…

Q: How many conversion factor(s) can be found in the following statement? " Americans combined drive…

A: Conversion factors are the mathematical relations between one unit of a physical quantity to another…

Q: 2 g aluminum sulfate in 200 g of water . density of aluminum sulfate ; density of h20

A: Density can be determined by using the following formula: Density = mass/volume

Q: The solubility of KNO, is 155 g per 100.0 g of water at 75 °C and 38.0 g at 25 °C. What mass of KNO,…

A: A saturated solution of KNO3 is cooled to form crystals.

Q: Draw 6 water molecules in each beaker below.  On the left should be 6 liquid water molecules. On the…

A: The rate of evaporation is inversely proportional to strength of intermolecular forces.  Solids have…

Q: A solution of CaCl2 in water forms a mixture that is 40.5% calcium chloride by mass. If the total…

A:

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A: Given that: Volume of glucose = 2.05 L Molarity of glucose = 0.278 M

Q: A mixture of methane (CH₄) and butane (C₄H₁₀) at one atmosphere pressure and 25°C has a density of…

A: Ideal gas equation gives the relation between pressure(P) and volume(V), temperature(T) and number…

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A: The objective of the question is to calculate the quantity of glucose, in moles, that was…

Q: A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO.) solution to a reaction flask.…

A: Given volume = 145 ml  Molarity  = 0.00260 mol/litre    Molarity = number of moles Volume in litre

Q: a Assume that mitochondria are cylinders 8.00 um in length and 0.800 pm in diameter. What is the…

A: According to the bartleby guidelines for the multiple questions. I can solve only first question.

Q: Using the mass of the empty beaker and the mass of the beaker + KOH, calculate the mass of KOH…

A: Number of moles = Mass in g/molar mass

Q: An alcoholic fermentation was conducted in the laboratory using 280 g glucose as substrate with a…

A: Formula used are given below: Density = Mass of substance / Volume of substance and Percent Volume =…

Q: Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water…

A:

Q: How many cm3 of HF(g) are needed to produce 26.0g of Na3AIF6. The density of HF (g) at 25C is…

A: given: mass of Na3AlF6  produced = 26.0 g  density of HF = 1.15 g/L The balanced chemical equation…

Q: e density of 85% phosphoric acid is cm. What is the volume of a solution that o 17a of ph eonhorie…

A: Density= 1.70g/cm3  Mass = 17g  Let us take volume of solution to be x So as shown below  And we…

Q: Some people like to make their own hand lotion because it can be less expensive than buying it and…

A: Given data:mass of water   =   253 g                                  mass of glycerin   =  264 g…

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A: In this we have to find concentration in g/mL   Given data:  Weight of empty graduated cylinder =…

Q: If you purchase 1 bottle of 120 tablets of 650. mg sodium bicarbonate in the pharmacy aisle  (the…

A:

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: A 1 gallon bottle of a certain brand of bleach costs $1.49. Determine the cost to buy enough bleach…

A: Given: The percentage of active ingredient (NaOCl) by mass is 6.25% The density is 1.05 g/ml The…

Q: A sunscreen preparation contains 2.50% by mass benzyl salicylate (2.50g benzyl salicylate/100g…

A: It is given that the sunscreen consists of 2.50 % by mass benzyl salicylate that is 2.50 g of benzyl…

Q: Read the descriptions below of two substances and an experiment on each. Decide whether the result…

A: Sample A The sample A is powder .   When distilled water is added one part is easily soluble and…

Q: Density of an aqueous solution of nitric acid is 1.43 g/mL. If this solutioin contained 36.0% nitric…

A: Given, Density of an aqueous solution of nitric acid = 1.43 g/mL Mass % of nitric acid = 36.0 %…

Q: Your 50 mL beaker has a mass of 5.85 g. You add 10.00 mL to the 50 mL beaker and now the total mass…

A:

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.