a. What two quantities must you measure to determine the density of a substance? b. Design and explain a procedure for determining the density of a small piece of rock (an "irregular" solid). c. If the rock in letter b has a density of 2.75g/mL and a mass of 15.3g, what is its volume? Make sure to show all work and include the final unit. Will the sample float or sink in water? Explain.

Q: A student reacts 6.0 g solid sulfur and 5.0 g oxygen gas at 95% efficiency to produce sulfur…

A: Given mass of S8 = 6 g mass of O2 = 5 g percentage yield = 95℅ molar mass of S8 = 256 g/mol molar…

Q: In the following diagram, blue spheres represent the element A and yellow represent the element

A:

Q: What happens between liquid water and water vapor when you have an increase in energy in the system?…

A: we have choose correct option

Q: 17. Based on the molecular diagram, classify each change as physical or chemical. a. b.

A: When we see the first reaction we see that there is no change in the composition of the reactants…

Q: 4. Which is not a physical change? a. Melting of candle      c. breaking a glass b. Digestion of…

A: We will answer the first question since the exact one wasn't specified. Please submit a new question…

Q: 2. A 48.33-mL sample of 0.150 M NaBr is titrated into 50.00 mL of 0.145 M AgNO3. Both solutions had…

A: I.) When AgNO3 and NaBR are titrated then as per solubility rules precipitates of AgBr would form .…

Q: What molecular compounds dissolve, what is broken? A. atoms B. chemical bonds C. chemical bonds…

A: Given that molecules dissolve in solution We need to find the appropriate reason behind it.

Q: 1. Consider the combustion of liquid C₅H₈ in oxygen gas to produce carbon dioxide gas and water…

A: #1: Liquid C5H8 undergoes complete oxidation to form CO2(g) and H2O(g) as products. Hence C5H8(l)…

Q: reactions?     a.The enthalpy of products in endothermic reactions is lower than the enthalpy of…

A: Applying concept of endothermic reaction.

Q: A classic chemistry class demonstration is the burning of magnesium ribbon with a Bunsen burner. In…

A: Yes, Option  D would be the right answer .

Q: Iron will be dicarded Naphthalene will be dicarded in the sink with running water. NaCl will be…

A: Process of discarding certain wastes

Q: 3. Which of the following processes is best described as a chemical change? Upon heating, mercury…

A: A chemical change is defined as the change in the chemical formula of the compounds. So whenever…

Q: Determine the mass of CaSO4 in the sample based on the following data to two decimal places mass of…

A: When the sample is heated the water present in the sample is evaporated and anhydrous CaSO4 is…

Q: 4. Carbon Monoxide is the most common air pollutant. a. How is it formed? b. What are its health…

A: Carbon monoxide is the most common air pollutant that is responsible for different health hazardous.…

Q: In setting up this experiment, a student noticed that a bubble of air leaked into the graduated…

A: When gas bubbles leaked into the cylinder that shows there is change in the volume of measured…

Q: If you started with 7.25 bsh, how many bgt is equal to this?

A:

Q: Use the following information to answer question 1. A group of students is asked to design and…

A: To answer the following question.

Q: . Convert 68852 millijoules into Calories. (Write your answer in the decimal form. Do not include…

A: 1 millijoule = 2.39 x 10-4  cal

Q: Directions: Answer the folowing question(s). 4 The ambulance is moving towards the woman standing 6…

A:

Q: 14. What is the total volume of gas produced by the action of heat on 1 g of silver nitrate? 211.9…

A: Mass of silver nitrate  = 1 gramChemical equation:

Q: 2) Which of the following is intensive property? A. The amount of energy produced upon burning…

A: Intensive property is the property of matter which is specific and doesn't change with the amount…

Q: CHCASE Dashboard Item 3 A student modeks four types of land use in a city. Each model has the same…

A: Ground water is recharged by some ways like rainwater,harvesting and raining. Water from rain seeps…

Q: 11. Eric watches the snow melt outside. He claims it is an exothermic process. Maggie tells her it's…

A: Please find your solution below : 11. When a process absorbs the heat, it is called endothermic…

Q: ____________ makes up the majority of oil use, with gasoline and diesel fuel being the most common…

A: Petroleum is a naturally occurring substance which is composed mainly of aliphatic hydrocarbons.…

Q: You take a bite of a sweet bell pepper. a. Describe what happens to the energy of a sugar molecule…

A: Energy and matter play vital roles in the growth and sustenance of living organisms, as well as in…

Q: Te [Kr] 四四 5s 4d 5P

A:

Q: particles

A: If the particles of the molecule have more energy then it will transfer energy to another particles…

Q: Use the References to access important values if needed for this question. Under certain conditions,…

A: Given : dissociation of HBr  Tip: law of conservation of mass

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.