2. Which of the following statements is a theory? A. In a reaction, the total mass of reactants is equal to the total mass of products B. Elements are composed of atoms C. Larger the mass, larger the volume of a substance. D. When you compress a gas, its volume decreases.

Q: What is the difference between a law and a theory?

A: The difference between a law and a theory has to be given.

Q: Green chemistry rests on a set of 12 principles. What are they?

A: 12 principles of green chemistry has to be given,

Q: I need help from questions A-C

A: DECOMPOSITION REACTION: A reaction in which a compound is cleaved into two or more smaller…

Q: 8.-Classify each statement as a law, a theory, an experiment, a hypothesis, an observation Birds…

A: Bird evolved from dinosaurs.Hypothesis provides a tentative explanation for observations. Hence, the…

Q: Elements, Compounds and Mixtures 1. Choose one letter from column A and one from column B that…

A: Elements are substances that are made from one type of atom. An element cannot be broken down into…

Q: Below are several statements. Each statement can best be classified as either a law or a theory.…

A: A theory is an explanation of an observed phenomenon or data set that may or may not have…

Q: 14. What is the definition of a physical property? What is the definition of a chemical property?

A: Most of the substances that we see around have certain characteristics and properties by which they…

Q: An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d 5 1.00 g/cm3), the flask and its…

A: Given: Mass of the empty Erlenmeyer flask= 241.3g Density of water = 1.00 g/cm3 Mass of flask filled…

Q: what is chemistry? why is it reliable, flexible and testable?

A: Chemistry is a branch of science, which deals with systematic study of structure, composition and…

Q: Which is more "correct", a theory or law?

A: Given statement is :  Which is more "correct", a theory or law?

Q: An empty sample bottle that weighs 27.32 g has a capacity of 19.58 mL. A piece of metal is placed…

A: Given: Mass of empty bottle = 27.32 g Volume of empty bottle = 19.58 mL Mass of empty bottle and…

Q: Which of the following statements is a scientific theory? (a) The energy in an atomic nucleus is…

A: To find: The statements which are scientific theory

Q: 1. In a change, one kind of matter is turned into another.

A: The answer to the following question is--

Q: Gold costs $400 per troy ounce, and 1 troy ounce 5 31.1035 g. Determine the cost of 10.0 cm3 gold if…

A: The relation between mass, density and volume is shown below.

Q: A chemist decomposes several samples of carbon monoxide into carbon and oxygen and weighs the…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: What is the principal aim of a scientist?

A: A scientist uses the resources in order to bring the change in their area of interest which helps a…

Q: What is the mass of 19.8 cm3of gasoline (density 0.680 g/cm3)?

A: Given : volume of gasoline = 19.8 cm3  And density of gasoline = 0.680 g/cm3

Q: An empty beaker weighs 42.09 g.42.09 g. When completely filled with water, the beaker and its…

A:

Q: 12. What is an element? A compound?

A: An element and a compound has to be defined.

Q: What mass of solid lead would displace exactly 234.6 liters of water? Given that lead has a density…

A: Unit of volume and density is converted as follows:

Q: Classify each statement as an observation, a law, or a theory. Chlorine is a highly reactive gas.

A: A series of similar respective observations leads to the development of a scientific law. A theory…

Q: A metal slug weighing 25.17 g is added to a flask with a volume of 59.7 mL. It is found that 43.7 g…

A:

Q: A student determines that 4 clinks weighs 15.45 g and 7 clacks weighs 14.11 g. What is the relative…

A: Solution -

Q: Explain the difference between a law and a theory?

A: Various ideas are formulated by the scientists and some are derived experimentally using various…

Q: Section 1.1 Chemistry in Context 1. What is the purpose of using the Scientific Method? 2. Define…

A: Question 1 - - >  The scientific method is the process by which scientists attempt to…

Q: chemist has a 19.50 g sample of drinking alcohol (ethyl alcohol). What is the volume of the…

A:

Q: What are branches of science and what are the purpose?

A: Science in simple terms is the systematic study of the physical and natural phenomena by closely…

Q: A chemist mixes sodium with water and witnesses a violent reaction between the metal and water. This…

A: A reaction basically exhibits an overall chemical change that yields new molecules/substances as…

Q: Describe the difference between a theory and a scientific law.

A: We usually come across different theories in the course of study and the scientific laws as well.…

Q: If an idea cannot be disproven by some possible observation or test, can such an idea be supported…

A: In practice, science does not always prove phenomena, but it seeks to eliminate the explanations…

Q: why do we solve problems in a scientific way?

A: When a problem is solved, there are many chances of error. Even the best intentioned scientist can’t…

Q: Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and…

A: Density of H2SO4 = 1.153 g/mL Volume of H2SO4 = 50.0 ml  mass of H2SO4 =  Volume x density = 50.0 ml…

Q: Consider the tabulated data collected by a student for an unknown metal sample. Use this data to…

A:

Q: c) A metal sample has a mass of 7.56 g. The sample is placed into a graduated cylinder previously…

A: Given :  Mass of metal=7.56 g Initial volume=20.00 mL The final volume of water= 21.68 mL Volume of…

Q: weight of 1000  samples

A:

Q: Classify each statement as an observation, a law, or a theory. All matter is made of tiny,…

A: The given statement is "All matter is made of tiny, indestructible particles called atoms." It can…

Q: 6. An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and…

A:

Q: 17. The density of a 100 kg block of marble is 2.76 g/cm³. What would be the density of 5 of such…

A:

Q: Discuss several political,social or personal considerations that might affect a scientist's…

A: Scientists are human. They have prejudices, they can misinterpret data and get emotionally attached…

Q: An empty Erlenmeyer flask weighs 241.3 g. When filled withwater (d=1.00 g/cm³), the flask and its…

A: Given data:   Mass of Erlenmeyer flask = 241.3 g                  Density of water = 1 g/cm3 Mass of…

Q: A pycnometer is a device used to measure density. It weighs 20.455 g empty and 31.486 g when filled…

A: Density is given by,

Q: 1= = exactly 36 in) = in nL = cm L(1qt=946 mL) kg = OZ exactly 1 lb and 1kg=2.20 lb) _qt (1qt=…

A:

Q: Is one anomaly enough to disprove a hypothesis? If not, how many are? Why is it important that…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Describe the steps of the scientific process in details. Explain the difference between a theory and…

A: The basic steps of the scientific methods are :- Make an observation that describes a problem…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.