98. In order to check for concentration or amounts of substances, principles of this branch of chemistry is applied:   A. Quantitative Chemistry B. Inorganic Chemistry C. Organic Chemistry D.Qualitative Chemistry E. General Chemistry 99. Which of the following leads to an overall decrease in energy of a system?

Q: Chemistry deals with the study of the relationship between electrical and chemical ?:energy is…

A:

Q: Can a chemical change result's in no new substances。?

A: Physical change: Physical change involves one phase to another phase without breaking or making the…

Q: A measurement related to the mass and velocity (speed) of particles.

A: Chemistry is the study of matter which has mass and occupy space. Matter is describes in number of…

Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: It is not definition of physical chemistry because it is interactions and transformations of…

Q: (a) The population of a large city grows very quickly for several years. Then the growth begins to…

A: Option B. is correct. As per given statement, the population of a large city grows very quickly for…

Q: 19. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide…

A: Using combustion reaction of wood it is observed that it is similar to decomposition of limestone.

Q: Given the data below calculate the mass of water in the original sample: Mass of empty beaker…

A: Given values-> Mass of empty beaker =27.3894 gm Mass of beaker + Mass of compound = 30.2200 gm…

Q: What is the fundamental difference between a chemical change and a physical change? A new substance…

A: Chemical Change : A change where the properties of the substance undergoing the change is completely…

Q: Describe a patterns/trends in a PHYSICAL property as we move down group 1 and group 7? Group 1 Group…

A: To find: Physical property down the group 1 and group 7

Q: Which branch of chemistry studies the composition of substances? The environmental impact of…

A: Chemistry involves the systematic study of various branches related to molecules wherein every…

Q: List three examples of substances. Explain why each is a substance.

A: List three examples of substances. Explain why each is a substance.

Q: BCPS Links 8 Schoology 8 Schoology Which line on Graph 2 accurately shows the relationship between…

A: Energy increase when repulsion increase

Q: What is a mixture is a combination of

A: To explain: A mixture is a combination of what?

Q: In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water.…

A: Calcium carbonate reacts with hydrochloric acid to form the carbon dioxide gas.

Q: A drop of food coloring is added to water. With time, it spreads evenly through the water so that…

A: When a drop of food colouring material added with water then on increasing the time, the food…

Q: A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C.…

A: Given : 5 g of Calcium chloride i.e CaCl2 is dissolved in 15 g of water at 22 oC.

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

A: Determine the mass of water sample in the sample --

Q: Which of the following statement is true?    A. laws are shorter theories  B. theories have not…

A: We are to discuss which of given options about scientific theories and laws is correct.

Q: Use the sample experimental data to calculate the mass of sample (BaCl2•xH2O) Mass of pan 15.110 g…

A: A question based on general chemistry that is to be accomplished.

Q: If the mass of the hot water is -67.46 and initial temperature of hot water is 51.0 and mass of cold…

A: First, the amount of heat absorbed by the cold water is determined.

Q: THE SEARCH FOR LIFE CONTINUES Scientists have identified two similar molecules as water-like…

A: A question based on general chemistry, which is to be accomplished.

Q: 24. The graph to the right represents the uniform cooling of a substance, starting with the…

A: When we cool the gas, it converts into a liquid state. On further cooling the liquid converts into…

Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: Thermochemistry

Q: 8. Mars is known as the "Red Planet" because of the red color of its soil. The red soil is rich in…

A:

Q: Explain Types of Energy?

A: SOLUTION: Step 1: Energy is defined as the ability to do work. Energy comes in various forms. Energy…

Q: Subject : Chemistry and Environmental Pollution Explain the role of atmospheric water in…

A: Role of atmospheric water in controlling the earth:  In the climate change, the atmospheric water is…

Q: Digesting food is an example of what? A chemical change A physical change

A: Physical change :-  In this chemical composition of the substance does not change. Involve change in…

Q: In a solar box cooker sunlight falls on the and the food gets cooked by absorbing heat energy.

A: Mirror is used in a solar cooker to increase the radiation input on the absorbing space and is fixed…

Q: 27. When it rains on you, which process just occurred? 28. In which state of matter is atmospheric…

A: A) When it rains, the condensation process takes place. Water evaporates from the earth's surface in…

Q: Energy  the matter possesses due to its position is called ? kinetic energy potential energy…

A: Kinetic energy: Energy because of the motion of the object Potential energy: Energy because of the…

Q: A match is lit and held under a cold piece of metal. The followingobservations are made: (a) The…

A: Physical changes are those in which change is physical appearance takes place like smell, heat etc.…

Q: 19. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide…

A: The heating of limestone is a chemical change;The limestone decomposes into two other substances,…

Q: Daily Water consummation: 110 L/family into cl/person (assume an average of 5.2 people in a family

A:

Q: When nature behaves in a certain way over and over again, under all sorts of different conditions,…

A: Please find your solution below : Law is a relationship between variables in a group of data that…

Q: Is the calculation step the last step in solving a chemistry problem? Why or why not?

A: The solution is given below -

Q: Real-World Chemistry 1. Suppose you wanted to ship bananas from Puerto Rico to New York and the time…

A: It is given that the bananas need to be shipped from Puerto Rico to new york which takes 8 days.…

Q: Using the given data, calculate: 1)Amount of CaCo3 2)Mass of CaCO3 in tablet 3)% mass of CaCo3 in…

A:

Q: An iron nail rusting is an example of a change.

A: Rusting : A process in which iron turns into its oxide that is iron oxide.  Rusting occurs when iron…

Q: f you put salt water in an open container under the sun, the water evaporates leaving the salt…

A: ANSWERE IS DISCUSSED BELOW :

Q: What property of matter is most responsible for the fact that sound travels at different speeds…

A: Answer

Q: A block of iron forming a pool of the liquid metal is correctly classified as A) Chemical change…

A: Physical change : is the change of matter that occurs without change of the chemical composition. It…

Q: #1 #2 Use the pictures above to answer questions 12 & 13. #3 12 Which picture or pictures best show…

A: Given:

Q: Why is chemical theory successful? What are some of the limitations of the theory?

A: The chemical theory describes the physical phenomena which give rise to chemistry as well as the…

Q: Which expression correctly relates θ, d and λ? Explain using evidence from your observations

A: Following is the equation of θ, d and λ.

Q: Patterson discovered that lead was getting into the environment by

A: Solution: Patterson discovered that a big amount of lead was getting into the environment by…

Q: A student noticed a yellow, solid substance was formed when mixing two clear liquids during a lab.…

A: It is not a physical change because chemical reaction is taking place between two liquids to give a…

Q: A change in phase may occur when the energy of the particles is changed. ABSORPTION of energy will…

A: Please find your solution below : The answer is False. The capitalised words do not make the…