Write the following from largest to smallest size. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a)    Mg, Be2+, Mg2+ (b)    Ca2+, Cl−, P3−, S2−

Q: The diameter of a silicon atom is 2.34 x 10-8 cm. If the silicon atoms were placed next to each…

A: Given:  Diameter of silicon = 2.34 x 10-8 cm Width of paper = 8.5 inch

Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

A: We have been provided with the ratio of magnesium to its oxide. Let us calculate other required…

Q: Explain how J. J. Thomson’s determination of the charge-to-mass ratio of the electron led to the…

A: Thomson Atomic model introduced us to the world of subatomic particles. He discovered the first-ever…

Q: Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 g of R…

A: Given: First Compound = 14.0 g R + 3.00 g Q  Second Compound =  7.00 g R + 4.50 g Q = RQ

Q: The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. Which compound has…

A:

Q: 2. Which compound (C12H22011 or NH,CI )contains the most total number of atoms?

A:

Q: Distinguish between molecular substances and ionic substances in terms of their composition?

A: Ionic compounds have strong ionic bonds while molecular substances have covalent bonds. Molecular…

Q: 11. A monoatomic anion with two charges contains 36 electrons. It is statements is false? А. Kr В.…

A: We have to consider an anion. Now going to the question A. is neutral atom…

Q: 2. Which of the following statements is accurate? Explain. "The mass of the student is 56 kg." The…

A: Interpretation -  We have to explain that which statement is correct - "The mass of the student is…

Q: n= 3, me = –2 Express your answer as an integer. ΑΣφ Number of electrons =

A: The value of principal quantum number (n) is 3 and magnetic quantum number (ml) = -2.

Q: In the periodic table below, give the name, symbol, atomic number, atomic mass, period number, and…

A: The periodic table is a table that organizes all of the chemical elements according to their atomic…

Q: Samples of compound X, Y, and Z are analyzed, with results shown below. Compound X Description…

A: Law of multiple proportions: It states that when two elements combine with each other to form more…

Q: Iron exists in nature as a mixture of predominantly three isotopes: 5426Fe (53.94 amu), 562.Fe…

A:

Q: If you have 13.02 x1023 atoms of nitrogen, what would you expect its mass to be?

A: Given, Number of Nitrogen atoms = 13.02 X 1023

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: Which of the following compounds are likely to be ionic? Which are likely to be molecular? SiCl4,…

A: Ionic compounds are formed by the bonding of two oppositely charged ions. This type of bond is…

Q: Which of the following gases are elements? O NH, O 0, O N,0 Rn Ar O 0, so, O H,S HCN NO NO, O He

A: Elements are the pure substances that are made up of only one kind of atoms, We are given some list…

Q: The fact that the C atom can form compounds like CH4, C2H5O, H2C=CH2, HC≡CH, etc., demonstrates…

A: To find: The fact that the C atom can form compounds like CH4, C2H5O, H2C=CH2, HC≡CH, etc.,…

Q: What is the mass of a single fluorine molecule, F2?

A: The mass of a molecule is the mass of all the atoms present in the molecule in grams. In order to…

Q: A metal x forms two different chlorides if 12.7g of chloride A and 16.3g of chloride B . contain…

A: To find: A metal x forms two different chlorides if 12.7g of chloride A and 16.3g of chloride B…

Q: mples of compound X, Y, and Z are analyzed, with results shown below. Mass of Hydrogen 0.148 g 0.329…

A: Law of Definite Proportion states that every Chemical Compound contains fixed and constant…

Q: When carbon and oxygen react, two different compounds can form dependingon the conditions. Compound…

A: Given observation: When carbon and oxygen react, two compounds are formed. Compound A contains 1.333…

Q: A platinum atom has a radius of 177 pm. If you could string platinum atoms like beads on a thread,…

A: Given that, Radius of Pt-atom = 177 pm =177×10-12 m= 177×10-10 cm =1.77×10-8 cm Length of necklace =…

Q: What would the mass be of Gold, if you had 6.02 x 10^24 atoms of

A: GOLD, molar mass of Au = 196.97 g/mol atoms of Au = 6.023 x 1023

Q: The radii of the sodium and potassium ions are 102 pm and 138 pm, respectively. Which compound has…

A: Ionic compounds are those compound which are formed by the electrostatic force of attraction between…

Q: For each of the following elements, write its chemical symbol,locate it in the periodic table, give…

A:

Q: 3. What type of substances are magnesium chloride, sodium chloride, and calcium chloride?

A: The question is based on the concept of chemical bonding. we have to identify the nature of…

Q: Iron exists in nature as a mixture of predominantly three isotopes: 54, (53.94 amu), 5® 26FE (55.93…

A:

Q: What is the % mass of oxygen in citric acid, C6H807?

A:

Q: How many protons are in 2.08 x 10-21 g of F?

A: Atomic weight of F = 19 Given is Mass of F= 2.08 x 10-21 g Number of moles= given mass/ molar mass…

Q: What is the edge length (in cm) of a titanium cube that contains 2.55 * 10(24) titanium atoms? The…

A:

Q: Complete the table, and then analyze the data to determine if Compounds Iand II are the same…

A: The concentration of a substance can be measured in terms of mass by mass percentage. This…

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

A:

Q: 2. Write the symbol for each element · aluminium sulfate · kidney stones • component of teeth and…

A: The formulas of above components- Aluminum sulfate-Al2(SO4)3 Kidney stone-cacium oxalate stones are…

Q: Calculate the exact masses of the ions C5H8O1 and C6H12 1, both of which have a nominal mass of 84.…

A: The organic compounds can be identified by various characterisation techniques. For example, NMR,…

Q: Which of the following are ionic, and which are molecular?(a) PF5, (b) NaI, (c) SCl2, (d) Ca1NO322,…

A: The compounds which are formed by its respective cations and anions  through electrostatic…

Q: The anticancer drug Platinol (Cisplatin), Pt(NH₃)₂Cl₂,reacts with the cancer cell’s DNA and…

A: The amount of a particular compound present in a solution is expressed by the various concentration…

Q: 2-75. A sample of rutile, an ore of titanium consist- ing principally of TiO,(s), was found to be…

A: The question is based on the concept of quantitative analysis. we have to calculate how much…

Q: Silicon is widely used in the semiconductor industry. Its isotopes and abundance are: Si-28 (27.977…

A:

Q: 5. Which of the following is a species with 12 protons and 10 electrons? a) Ne?* b) Ti2* c) Mg? d)…

A: Number of proton = atomic number Number of electrons =( atomic number) +- charges

Q: 2 Most of the elements are solids at room temperature. Give three examples of elements that are…

A: Elements: It is a pure substance that consists of atoms having the same number of protons in their…

Q: you have 13.02 x1023 atoms of nitrogen, what would you expect its mass to be?

A:

Q: A hypothetical element exists as two isotopes: I = 68.00 amu and II = 71.00 amu. If the percent…

A:

Q: 2. The creation of carbon monoxide is an effect. What is one cause? A. the regrouping of the atoms…

A: 2. Operating a stove. 3.  A harmless compound can become harmful when its elements are separated. 4.…

Q: Imagine that you are given information about an element X which has two naturally occuring isotopes.…

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Q: Which answer can be used to illustrate the law of multiple proportions?    a, CO2, H2CO3 b, CH4, CO2…

A: To solve this problem we need to know the Law of multiple proportion  and postulate of Dalton Atomic…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.