The physical basis for life is the carbon atom. This atom   a. is more abundant than silicon.   b. is capable of forming long, complex, stable chains that extract, store, and use energy.   c. can replicate itself in a variety of environments.   d. releases energy when it bonds with other elements, thus providing the necessary requirements to sustain the organism.   e. does all of the above.

Q: In 1808, John Dalton proposed a series of statements regarding the atom that became known as…

A: Given, Five statements of Dalton's atomic theory is given -     Required,                   Among…

Q: The explosion of an atomic bomb releases many radioactive isotopes, including strontium-90.…

A: The position of the element strontium in the periodic table is marked in the diagram of the periodic…

Q: Using white and black circles to represent different kinds of atoms, make a drawing that accurately…

A: Given samples of matter,         A solid element, a liquid compound, and a heterogeneous mixture.

Q: What is protoscience and pseudoscience? What is atomic theory?

A: Science is the study of nature. It describes the fact that how physical world work. Four main…

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: The left side of the reaction has one green element and two blue elements because they are of two…

Q: A certain mass of carbon reacts with 455.9 g of oxygen to form carbon dioxide. ________ grams of…

A: According to Law of multiple proportions:     C  + O2 → CO2    ----Eqn 1     C  + 1/2O2 → CO…

Q: In the following drawing, the green spheres represent atoms of a certain element. The purple spheres…

A: In the given chemical change, the starting materials consist of four green spheres and two purple…

Q: Describe, the structure of matter on the microscopic level.  Explain it to someone who's never heard…

A: Matter is anything that occupies space and possesses mass. Microscopic level is that level which…

Q: Which of Dalton’s postulates about atoms are inconsistent with later observations? Do these…

A: In 1808 John Dalton has provided the first atomic theory. He has stated that all matter is made up…

Q: As we look around space we find that most of it is composed of (4)_ hydrogen combines with carbon it…

A:

Q: 20. According to the law of conservation of mass: A. energy will be lost during every endothermic…

A: We have been asked the defination of law of conservation of mass

Q: What is a proton ? what is a chemical?

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

Q: Compare the amount of copper predicted in part A with the amount measured in part B. What percentage…

A: Predicted copper amount=0.9918 Actual amount of copper produced= 0.72

Q: Mass Isotope from the list, and answer the following questions for each term: What familiarity and…

A: The two given terms are  Mass Isotope Dear student since it is a multiple subparts questions,…

Q: Complete the table below.

A: Since you are asked for multiple elements, we are entitled to solve first three for you.

Q: formuia for tre feilcwing mcle cules Suppiy the missag what ere likeiy digit. Choose 1 FA tle…

A:

Q: In Express your answer as an integer. N=                              Electrons    Ca Express your…

A: In Neutral atom, number of electrons are always equivalent to atomic number of that atom.

Q: (a) CACO; is the chemical formula for calcium carboaate. (b) An acid reacting with a carbonate…

A: 21. (a) CaCO3 is the chemical formula for calcium carbonate.

Q: After two elements react to completion in a closed container, the ratio of their masses in the…

A: In general chemistry, a number of theories were proposed to explain the nature of matter, particles,…

Q: Coulomb's Law is a mathematical representation of the electric force between two objects. When…

A: Coulomb's law formula is used to find the electrostatic force of attraction between two charged…

Q: 1.Define matter and classify a given substance by state and composition; and suggest how to separate…

A: (1) Matter is any Substance that has mass, occupy volume, and can be sensed by our sense organs. For…

Q: A hydrogen-filled balloon was ignited and 1.70 gg of hydrogen reacted with 13.6 gg of oxygen. How…

A:

Q: Complete the table below

A: Since you have posted multiple parts, the answer for first three parts are given below. Kindly…

Q: 1. Which is true about the Law of Conservation of Mass? 3. What was one of the tests that Lavoisier…

A: 1. D. Atoms cannot be created or destroyed, only rearranged. The Law of Conservation of Mass implies…

Q: Determine which sample contains the mos atoms. A 10 g sample of Uranium 11 g sample of copper  1 g…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Let a triangle represent atoms of element A and a circle represent atoms of element B.a. Draw an…

A: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.…

Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

A:

Q: 1) C a b The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by…

A:

Q: 3) In a far away land and long ago, a series of experiments were carried out. Three samples of…

A: In 2) Use law of constang proportion Divide the both Kalium and pyron masses We see that A same and…

Q: 4. Who discovered the neutron in 1932? A. Democritus C. Ernest Rutherford B. James Chadwick D.…

A: Mass number Mass number gives the number of protons and neutrons in an atom.

Q: Naturally occurring elements are originally formed: O A. Inside the core of stars, or when stars…

A: Naturally occurring elements as the name suggest, it is formed naturally not by any man made actions

Q: gas. D. Matter with a defined shape and defined volume. E. The formation of new substances by…

A: We have to match the right answer

Q: A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a) Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: 15. The elements sodium (Na) and chlorine (CI) are both deadly poisons. Salt (NaCl), which contains…

A: The given data is, the elements sodium and chlorine are both deadly poisonous. But the salt contains…

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

A: Law: A descriptive generalization about how some aspect of the natural world behaves under stated…

Q: What do metals and nonmetals have in common? A both have high melting and boiling points B both are…

A: Metals are those elements which donate electrons. Non metals are those elements which accept…

Q: A 25.0 g sample of sucrose is found to contain 51.4% by mass oxygen. A second sample of sucrose…

A: The above statement is consistent with law of Constant Composition.

Q: It is discovered that it contains 7.759 %  by mass of  of the element oxygen (molar mass 16.00…

A: To calculate empirical formula of compound Ontarium , we first calculate moles of both Oxygen and…

Q: 2.1 u Be 1.0 1.5 NDF BC 1.5 25 3.0 3.5 4.0 Na Mg 0.9 1.2 Al Si 1.5 1.8 2.1 S CI 3.5 3.0 P K Ca Sc…

A: Given :  To find the O-H bond in water as either pure covalent, polar covalent or ionic

Q: According to the law of conservation of matter, what happens to the atoms in a chemical reaction?…

A: (a) The atoms are rearranged with no loss in mass

Q: Defend or refute the statement • The separation of a mixture may result in the production of an…

A: Mixture is a composition where two or more different components are mixed . The process of parting…

Q: macroscopic structure level is! A. Structural elements that may be viewed with naked eye B.…

A: Given : We have to tell about macroscopic structure level.

Q: Why do pennies turn "gold" upon heating? What happens on their surfaces?

A: Interpretation -  To tell about why do pennies turn "gold" upon heating and tell about what happen…

Q: A sample of 4.000 g of nitrogen can be combined with 4.571 g of oxygen to form nitric oxide gas…

A: In nitric oxide, the ratio of N and O is = N : O = 1 : 1.                                      (mole…

Q: Why are the chemical elements important in the Big history story?

A: A chemical element, also called an element, is anything that can decompose into simple substances…

Q: 2 N205 (s) 54 NO, (g) + 02 (g) AG;° (kJ/mol) N2O5 (s) 117.7 NO2 (g) 51.8

A: From the standard Gibbs free energy data □G° = [Total Gibbs free energy of products] - [Total Gibbs…

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: Imagine a new element (symbol X) has been found on Mars. Four isotopes of the element have been…

A: Average atomic mass of element X can be calculated by using the equation: Average atomic mass of X =…

Q: Draw your own concept of an atom. You may refer to the model given by Bohr for an idea of the atom…

A:

Q: Which of the following is a property of carbon atoms? im not sure which one because arent carbon…

A: The atomic number of carbon (C) is 6. Therefore, its electronic configuration is 1s2 2s2 2p2. There…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.