The solubility of a gas in a liquid is: A) increased with increasing pressure B) decreased with increasing temperature C) Both A & B D) None of the above

Q: Balance the following equations, and indicate whether they are combination, decomposition, or…

A:

Q: Which best describes the pH scale? Acids measure below 7. Bases measure below 7. O Acids and bases…

A: The pH scale is defined as a scale which is used to calculate the concentration of hydrogen ions in…

Q: Which is an example of a mixture? O A. Water O B. Salt O C. Milk O D. Aluminum

A: Mixtures are formed by composition of different substances, such that they possesses the identical…

Q: A ring at a pawn shop is labeled “gold”. The ring has a mass of 4.4 g and a volume of 0.55 cm³. Is…

A: Given : Mass of ring = 4.4 g Volume of ring = 0.55 cm3 Density of pure Gold = 19.3 g/ cm³

Q: Use the figure below to answer question 4. 200 g 50 g of 75 g of sugar is added to of water is salt…

A: Step 1 : 200 g of water is poured into a beaker Step 2 : 50 g of salt is added to the water Step 3 :…

Q: What is electronegativity difference between oxygen and carbon

A: Electronegativity is the property of an atom by which it tends to attract the shared pair of…

Q: Tony gets stung by an ant. He applies baking soda, a weak base, to the site. What acid is Tony…

A: Tony gets stung by an ant. He applies baking soda a wake base to the site.

Q: 2. Calculate the number of millimoles contained in 500 mg of each of the following substances: (a)…

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Q: Which of the following is NOT true of a compound? O It is made of elements that keep their…

A: Compound:  It is a material that form by chemical bonding between two or more than two chemical…

Q: Which substance is used to remove rust from metal? O lye (NaOH) O hydrochloric acid (HCI) O ammonia…

A: Answer: The correct option is option B) Hydrochloric Acid (HCl) The rusting of iron is a slow…

Q: When placed in a pycnometer, 20 g of salt displaces 7.6 g of kerosene. If the mass density of…

A: Given,Mass of salt , msalt = 20 gramMass of kerosene, mkerosene = 7.6 gramMass density of kerosene,…

Q: Outline the procedures used to calculate the motion of molecules in fluids and atoms in molecules.

A: Motion of molecules in fluid can be determined by stokes law. which state as: the viscus drag force…

Q: One of the ideas to fix the kg using constants of nature, was to "Count atoms". A near perfect…

A: Given mass = 1 kg = 1000 g Molar mass= M = 28 g/mole Number of moles = n = Given massMolar mass…

Q: en you add 5ml of ethanol with 5ml of water and then shake to mix the two the amount measured is…

A: in Lab when we mix ethanol with water then they tightly pack with each other. they strongly react.

Q: For polymeric solids which of the following statements is true: 25. A. Thermoplastics have cross…

A: The plastic used to make pan handles is Bakelite which is a thermosetting plastic which is processed…

Q: The boiling point of water may be increased by increasing __________. (5.3)

A: Boiling point of water increases by increasing in pressure. When pressure is increased boiling point…

Q: The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the temperature changed. Is this…

A: Solution: Givwn that The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the…

Q: What is the formula for the common household compound known as washing so

A: Washing soda

Q: Find the percentage by mass of oxygen (O) in Al2O3 if it is 52.9% aluminum (Al) by mass. (Round your…

A: please see the next step for solution

Q: A sample of pure copper has a mass of 12.5 g. Calculate the number of (a) moles in the sample and…

A: Part A:

Q: Twenty-five identical molecules are in a box. Microstates are designated by identifying the…

A: The total number of Identical molecules in a box = 25(N)

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Na2CO3 atomic mass of Na=23 gm atomic mass of carbon C=12 gm  atomic mass of Oxygen O=16 gm total…

Q: :Force developed between molecules of same material is called A) Adhesive force B) Cohesive forces

A: In this question we have to answer whether the force developed between molecules of same material is…

Q: When a particular substance crystallizes, it forms a body-centered cubic unit cell. It has a…

A: Given : M=100.11 g/mole a=341 pm In this question we have to calculate the density.

Q: Data and Observations Change or Reaction Burning wood or paper Chemical or physical change? How do…

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Q: A sample of pure sodium has a mass of 17.4 g. Calculate the number of moles in the sample and sodium…

A: mass of sodium sample = 17.4 g

Q: Reactions Drawing #4 in the diagram shows which type of reaction? 1. O 2. O 3. + O0 - 4. O Synthesis…

A: Answer- Replacement In the 4th figure theere are 2 compounds made up of 4 difference particles…

Q: Determine the mass in grams of 7.83 ✕ 1024 molecules of SF6

A:

Q: Unit 9: Compounds - PS Test The table below shows the pH and reaction to litmus of four different…

A: Given : pH of saliva is 6.8 Red litmus has no change Blue litmus turns red

Q: You have discovered an element that is a poor conductor of electricity, has a low melting point and…

A: The discovered element is a Poor conductors of electricity, has a low melting point and is a gas at…

Q: Which of the following substances decreases in density when it freezes from a liquid to a solid? a.…

A:

Q: A sample of pure sodium has a mass of 15.7 g. Calculate the number of moles in the sample and sodium…

A:

Q: The relative density of a substance is the ____.   A) ratio of its density to the density of water…

A: The relative density of a substance is the ratio of its density to the density of…

Q: In Europe, nutritional information is given in kilojoules instead of nutritional calories. A packet…

A: The given data are listed below.

Q: Differentiate ohmic and non ohmic materials

A: The material that obeys Ohm’s law is said to be an Ohmic material. While the material that does not…

Q: You have a sample of 125 g of tetrahydrofuran. Calculate the pressure at which this sample would be…

A: Given Data: Mass of sample m= 125 g=0.125 kg Temperature T = 54 C = 327 K The molecular weight of…

Q: Ultrasonic waves are used for stirring liquid solutions because they    A) do not produce noise…

A: The audio frequency band can be divided into seven bands in which the frequency less than 20 Hz are…

Q: Conclusions 7. List the metalloids. Research their properties and complete the table. Put an X in…

A: Metalloid is a type of element , which has property in between or mix of metals and non-metals.…

Q: Directions: Differentiate ohmic materials from non-ohmic materials and give examples on each.…

A: Ohm's law Ohm’s law states that the "voltage across a conductor is directly proportional to the…

Q: A sample of compound AB decomposes to 48 g of A and 12 g of B.  Another sample of the same compound…

A: In first sample of compound, AB→A48g+B12g In this decomposition, the A compound has 48g and B…