34. An exterior wall of a building is 4.0 m × 8.0 m. A can of paint can provide coverage for 400 square feet. Is there enough paint for one coat?

Q: Calculate the amount of heat needed to melt 76.0 g of solid ethanol (CH3CH₂OH) and bring it to a…

A:

Q: is a homogeneous mixture and not a compound. Explain 2. How could you tell when the milk mixture had…

A: Milk is a homogeneous colloid. Colloids are mixtures that consist of tiny, insoluble droplets…

Q: 9. When measuring volumes of liquid, we use graduated glassware like flasks, graduated cylinders,…

A: Graduated glasswares have a calibrated scale marked on the outside wall.

Q: True or False  1) A 10 cm3 piece of magnesium will have a greater mass than a 10 cm3 piece of zinc.…

A: Given, Volume of Magnesium = 10 cm3 Density of Magnesium = 1.7gmL Volume of Zinc = 10 cm3 Density of…

Q: Sublimation, Extraction, Decantation, Filtration, Evaporation 1.Of the 5 methods listed for the…

A: The combination of soil, clay, or silt and water provides the suspension termed as mud. If the…

Q: Many processes occur in the digestive system. Which process is best classified as a physical change?…

A:

Q: 16. A doctor has ordered that a patient be given 30.00 dg of glucose, which is available in a…

A: (16) Given that -  Mass of ordered glucose = 30.00 dg  Concentration of glucose available = 20.00…

Q: A puddle of water slowly shrinks in the sun. After a few hours, the puddle has dried up completely.…

A: The law of conservation of mass, also known as the principle of mass conservation, is a fundamental…

Q: According to the chromatography the value of the distance traveled by the solvent is:

A: We need to calculate the distance traveled by solvent.

Q: Convert 12.1 microliters to centiliters.

A: 1 microliter = 0.0001 centiliter

Q: a) Which of the following is the lowest temperature? a) 42 C b) 318 K c) 57 F d) all these…

A: The solution requires unit and dimensional analysis .

Q: If a rectangular piece of cement is 2.00 cm x 2.00 cm x 9.00 cm and has a mass of 108 what is its…

A: Given: dimensions: 2.00 cm×2.00 cm×2.00 cm mass = 108 g

Q: What is the mass in grams of 1.00 gallons of water? Density is 1.00g/ml for water. Use these…

A: Given that: 1.00 gallons water 1 gal = 4qt  Density of water = 1.00g/ml

Q: A sample of 5 lactobacillus bacteria found in yogurt measure 7.9 x 10-6 m in total length. A second…

A: Total length of 5 bacteria = 7.9 x 10-6 m Total length of 3 bacteria = 5.2 x 10-6 m

Q: Put (✓) mark if the statement describes the property of solid, liquid, and gas based on the kinetic…

A: Matter can be classified in three types These three types are solids , Liquid and gas.

Q: 9. A gold sheet weighs 2.49 g. If the density of gold is 19.31 g/cm3, and the length and width of…

A: The volume of the given gold sheet is; V=mgold sheetdgold=2.49 g19.31 g cm-3=0.129 cm3

Q: pure liquid, represented in the figure, has a density of 1.43 g/cm. Which TWO models and statements…

A: Density is the amount of substance in unit volume. It is unique to a substance. Density of a…

Q: 6. Beginning with the volume of water in the Erlenmeyer flask, convert the volume from milliliters…

A: The given question discusses about unit conversation of volume term from milliliter to microliter…

Q: You own a coffee shop and want to improve the formula for your coffee as the competition between the…

A: We are asked to conver the °F temperature scale to °C scale. Solved in step 2.

Q: 10. A sample of gold required 3.25 x 104 J of heat to change its temperature from 23°C to its…

A:

Q: n in scientific notation

A:

Q: The average density of blood is 1.060 kg/L. The average human body contains 5.00 L of blood. What is…

A: average density of blood = 1.060 kg/Laverage volume of blood = 5.00 Laverage mass of blood = ?

Q: A sample of 14.2 cm3 of aluminum, in powdered form, was mixed with an excess of iron(III) oxide. A…

A:

Q: 20. As an instructor is preparing for an experiment, he requires 425 g phosphoric acid. The only…

A:

Q: 6. How can you use 7. Complete the chart below, cut it out and staple it into your journal.…

A:

Q: Observed increases in global temperatures are caused byelevated levels of carbon dioxide. Is this…

A:

Q: Which is more efficient method of separating solids from liquids by filtration or by decantation?…

A: Filtration is a process of separation of solid particles from liquids by passing the liquid through…

Q: And a regular sample of zinc has a mass of 23.21g. The sample is carefully placed in a graduated…

A:

Q: A student recorded the temperature of a solution every 30 s for 3 min while the solution was heating…

A: Bunsen burner is used for heating chemicals inflame in a direct or indirect way.  As time progresses…

Q: 1. 23.78 hg = kg %3| 2. 3423 L= cL 3. 9.643 Mm = m

A:

Q: Two liquids, A and B are immicible. Liquid A has a density of 0.89 g/mL. Liquid B has a density of…

A: The solution is given below -

Q: 1C. CH7O₂Br 10. C₂H₁2O 3.0 www PPM

A:

Q: The chemist measures the volume of the unknown liquid as 1.337 L and the mass of the unknown liquid…

A: The objective of the question is to calculate the density of an unknown liquid and then identify the…

Q: 228882 120 110 100 90 TEMPERATURE 80 70 60 2889 10 0 -10 -20 LEG 8 LEGA 100 Leg B Leg A Leg C Leg E…

A: A heating curve is plotted between temperature vs heat of a substance, it  represents the phase…

Q: A vial is filled with chloroform (d = 1.48 g/mL), mercury (d = 13.53 g/mL) and water (d = 1.00…

A: The substance with the high density will form the lower layer and the substance with the least…

Q: Classify the following as to chemical or physical change: Assignment : Copy and write your answer…

A: Physical change: In a physical change the physical state of matter changes. In this change different…

Q: 10. When an irregularly shaped solid of mass 105 g was placed in a cylinder that contained 25.00 ml…

A: The volume of the water displaced by the body in the cylindrical tub is equal to the volume of the…

Q: You are given the masses, in grams (g), and the volumes, in cubic centimeters (cm³), for a series of…

A:

Q: Classify each statement as an observation, a law, or a theory. Neon is an inert (or nonreactive)…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: Length:3.55 cm Width:2.55 cm Mass:0.338 g   Volume of aluminum foil (cm3)

A: For given aluminum foil we have,  Length:3.55 cm Width:2.55 cm Mass:0.338 g  We know the formula…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.