Element Compound Molecule Density Precision Accuracy

Q: Which of the following statements about compounds is TRUE?     A substance that cannot be broken…

A: Which of the following statements about compounds is TRUE? The answer is given below with…

Q: TRUE OR FALSE 1. A heterogeneous mixture can be separated into pure substances, but a homogeneous…

A: Mixture  A mixture is the physical combination of two or more substances in which the identities are…

Q: An aluminum atom has a mass of 4.48×10^-23 g and a small airplane has a mass of 5000. kg. Use this…

A: The objective of the question is to find out the mass of 1 mole of aluminum atoms and the number of…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: A question based on physical and chemical changes. A molecular system is given whose most possible…

Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO,…

A: Given,

Q: For each of the following substances, place the symbol of the first element in its spot on the…

A: Substance set #11. The commonalities between the locations of the first element in the substance…

Q: A) It has a covalent double bond.

A: Iodine is 17th(VIIA)group element• it has 7 valence shell electrons• So required single electron to…

Q: Questions: 1. Write the transition metals that you tested in order from 2. Find copper, iron, and…

A: 1) Osmium is most dense transition metal with density of approx 22.59g/cm³c Whereas scandium has the…

Q: . Complete the table on the back of this note for drawings in procedure steps 3, 4, and 5. In your…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Use the information and models to answer the following questiön. A group of students are trying to…

A: Electrical conductive material are those which can transfer charge from one end to other end.

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 96.896.8 grams. Tia…

A: Formula used: Moles = Mass/ Molar Mass Number of atoms = Moles x Avagadro Number

Q: Questions and Problems (May be assigned before or after the experiment, depending on your…

A: It was observed that upon mixing of the clear liquid and of the white solids, the flask holding the…

Q: 19 Which of the following most accurately models the relationship between compounds and elements? A…

A: Given: 19. Models to determine the relationship between elements and compounds.

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: In chemistry, compounds are classified as solid, liquid, or gas based on their physical and chemical…

Q: In the following images, the white spheres represent hydrogen atoms and the red spheres represent…

A:

Q: 1. Describe the color of the mercury(II) oxide.   2. Describe what happens to the mercury(II) oxide…

A: Since third question is different than first two question. Here, we solve first 2 questions as they…

Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A: Potassium nitrate (KNO3) is ionic compound and it contains one potassium, one nitrogen and three…

Q: Consider these compounds: A. Zn3(PO4)2 B. Ag₂CO3 C. Ca3(PO4)2 D. Ag₂SO4 Complete the following…

A: The question is based on the concept of solubility product principle. It states that when a weak…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: Answer:- This question is answered by using the simple concept of physical change and the chemical…

Q: 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of…

A: We have to calculate the mass HgO required to produce 54 ml of O2 gas when Solid HgO undergo…

Q: The boiling of water is aa. physical change because the water disappears.physical change because the…

A: The boiling of water is a physical or chemical change. (a) physical change because the water…

Q: How many carbons, hydrogens, and oxygens does ribose have in its formula?

A: Ribose sugar  aldopentose sugar  and it is present in  RNA.  Ribose moecular formula = C5H10O5

Q: Two or more substances in variable proportions, where the composition is constant throughout are a…

A: A compound is a chemical species that is formed when two or more atoms join together chemically,…

Q: 5.) Correctly match the terms listed on the left with the substances listed on the right. More than…

A: --> Mg (Magnesium) is an element because it is in native state  --> Fe mixed with sand then it…

Q: In the figure shown, is a chemical reaction occurring? Yes, because the atoms have rearranged to…

A: A reaction in which reacting atoms chemically combine with each other to form a new substance is…

Q: One of the big problems in chemistry is our dependence upon our five senses (macroscopic…

A: The Brownian motion explain the random movement of atom and molecules in a gaseous state where the…

Q: The tap water found in many areas of the United States leaveswhite deposits when it evaporates. Is…

A:

Q: 2. Structure E is a form of carbon. What is the name of this structure? A. carbide B. graphite Put a…

A: An element is a pure substance made up of only one kind of atom. The elements can be categorised…

Q: You are pondering synthetic vs. natural products as you follow your mom through the grocery store.…

A: Natural materials are made by nature but artificial materials or synthetic materials are made by…

Q: What is the term for the property of a substance that cannot be observed without changing its…

A: The property of a substance that cannot be observed without changing its chemical formula is…

Q: 2. In what ways do chemists classify elements? How does the periodic table reflect these…

A: Classification of elements is done in the periodic table and this helps us to understand the…

Q: The human body contains many elements from the periodic table. It is mostly composed of oxygen and…

A: Mass Of hydrogen = 7.07.0 kg Mass of phosphorus = 0.780.78

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 10.810.8 grams. Tia…

A: Number of atoms = number of moles x 6.0224 x 1023 Number of moles = Mass/molar mass

Q: Part 1: Vocabulary Define the following terms: (from what you remember from middle school) Matter:…

A: Answer for part 1 Matter It is the substance of which any physical object consist. Atom It is the…

Q: Which statement describes a chemical property of hydrogen gas 1. Hydrogen gas burns in air. 2.…

A: Hydrogen is the most abundant element in the universe, it is found in the sun and the stars.It is a…

Q: An element, Spencerecium, has two isotopes.  Spencerecium-145 has a relative abundance of 85 % and…

A: Abundance of spencerecium -145 = 85%  Abundance of spencerecium-140 = 15%

Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: CHEM&110 Homework Chapter 1 1. In these diagrams, two different types of atoms are represented by…

A: (1) Any Substance that has mass and occupy volume, and can be sensed by our sense organs, is called…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: Given changes it undergoes Type of Change = Need to determine

Q: Write a complete chemical formula, including physical state symbol, for each element listed below in…

A: Each and every element has different type of symbolic representations, are known as chemical formula…

Q: Natural gas is odorless; to alert people to gas leaks, the gas company inserts an additive that has…

A: The speed of the gas molecule is inversely proportional to the mass of the gas molecule. The…

Q: In the table below you will find three descriptions of scientists engaging in activities that are…

A: In this question we need to find missing word.

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.