Symbol 31p3- Protons 34 50 Neutrons 45 69 118 Electrons 46 76 Net charge 3+ 2.

Q: In 1961, scientists agreed that the atomic mass unit (amu) would be defined as 1/ 12 the mass of an…

A: Since you have posted a question with multiple subparts, we will solve the first three subparts for…

Q: 2 5 152 A 352.44 155 T 362.31 154 16 D 359.12 153 G 355.67 156 X 365.88 157 Z 369.52 You time travel…

A: Since you have asked multiple questions ,we will solve the first question for you.If you want any…

Q: If 2 moles of water decomposes, the products that will form are 2 moles of hydrogen gas and one mole…

A: Given, Moles of water decomposed = 2 moles.

Q: If 4.67 grams of liquid butane (C4H10) undergo combustion in the presence of an unlimited amount of…

A:

Q: The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of…

A: Molar mass of any element is equal to the atomic mass of that element in the unit of grams. Molar…

Q: A 1/20 inch thick lead sheet is used for protection from medical X-rays. If a single lead atom has a…

A: To find out how many lead atoms thick the sheet is, we need to convert the thickness of the lead…

Q: How many B atoms are there in 5.1 mols of B? Please give your answer in terms of scientific notation…

A: Solution The mole thought may be a convenient technique of expressing the number of a substance. Any…

Q: Where does the 3.77 come from, if you don't mind me asking?

A: The equilibrium constant of a cell reaction can be determined by the following reaction: E=0.059nlog…

Q: Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: Given information: Mass of Al2O3 = 12.4 kg Mass of NaOH = 57.4 kg Mass of HF = 57.4 kg

Q: expected mass loss

A:

Q: What is the mass in 3.52 x 10^23 water molecules?

A: mass of 3.53 ×1023 molecules is 10.45g

Q: How many atoms of O are found in 1.00 x 10 2 g of K 2Cr 2O 7 ?

A: Number of atoms of Oxygen present in the given compound can be calculated as -

Q: he number of protons, neutrons, and electrons, respectively, in the ionic species 209 83Bi3+ are:…

A:

Q: An atom consists of two isotopes, the first with an atomic mass of 15.8967 amu and the second with…

A: Atomic mass of first Isotope = 15.8967 amu Atomic mass of second Isotope = 16.8245 amu Average mass…

Q: Solid sodium oxide and gaseous water are produced by the decomposition of solid sodium hydroxide…

A:

Q: Calculate the mass of 8.4 x 1 0 24 molecules of carbon dioxide (dry ice) (Hint: first calculate the…

A:

Q: Consider the following chemical reaction. 3 Zn(C:H:O:):(aq) + 2 Na:PO:(aq) → 6 NaC:H:O:(aq) +…

A: Given: Mass (g) of zinc acetate = 20.5 g The given reaction shows that: 3 moles zinc acetate = 1…

Q: Aqueous potassium nitrate (KNO3) and solid silver bromide are produced by the reaction of aqueous…

A: When aqueous potassium bromide react with aqueous silver nitrate it forms precipitate of silver…

Q: A given sample of xenon fluoride contains molecules of a single type XeFn, where n is some whole…

A:

Q: Calculate the amount of carbon (in moles) contained in a 2.65 g pencil “lead.” (Assume that the…

A: The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a…

Q: An atom of rhodium (RhRh) has a diameter of about  2.7×10−8cm2.7×10−8cm. How many RhRh atoms would…

A: Given : Diameter of Rh atom = 2.7 X 10-8 cm And the distance to be covered = 6.0 μm = 6.0 X 10-4 cm…

Q: Determine the mass in grams of 7.75 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Given,the mass of one mole of carbon = 12.01 gNumber of carbon atoms = 7.75×1021 atomsHere, we are…

Q: For each of the following word equations, write the balanced chemical equation: (a) methane + oxygen…

A: Balanced chemical equation: Balance chemical equation can be define as the reaction in which number…

Q: 74. A throat lozenge contains 5.0 mg of menthol, which has the formula C10H20O. How many moles of…

A: Given : 74. 1. How many moles of menthol are in 5.0 mg of menthol? 2.What is the mass in grams of…

Q: Balance the equation below, which uses imaginary elements (they still follow the usual convention –…

A: We have to balance the equation below, which uses imaginary elements (they still follow the usual…

Q: Write the formulas of the elements that are reactants and the formulas of the compounds that are…

A: In a chemical reaction, reactants are present on left side of the arrow and products are present on…

Q: Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the…

A: Radioactivity is a process by which unstable atomic nuclei lose energy by emitting radiation. This…

Q: Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are…

A: Mass percent :-  The mass of a component in grams present in 100 grams mixture of all components is…

Q: 4. A student has been tasked to determine the percent water in thalium (III) nitrate, TI(NO3)3×H2O.…

A: On heating and consequently allowing the hydrate to stand in open air overnight allows the hydrate…

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.