Calculate the root mean square velocity (in m ·s1) of N2 at 145 K . The molar mass of N2 is 28.01 g· mol units! -1 Be careful with Express your answer in m ·s-1 to three significant figures. Urms = m·s-1

Q: If Cu(NO3)2 + 2 H2O à Cu(OH)2(s) + 2 HNO3(aq)  would any copper ions be produced? Write the net…

A:

Q: Ariana plans to react a sample of magnesium carbonate (MgCO3) with hydrochloric acid (HCl) to…

A: Ariana plans to react a sample of magnesium carbonate (MgCO3) with hydrochloric acid (HCl) to…

Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: A sample of an iron alloy contains 90.2 g Fe, 2.15 g C, and 1.01 g Cr. Calculate the percent by mass…

A: Total mass of the alloy = mass of Fe + mass of C + mass of Cr = 90.2 + 2.15 + 1.01 = 93.36 g

Q: Aluminum nitrate + potassium bromide

A: We can expect aluminium bromide and potassium nitrate as the displacement products.

Q: a) b) Br OH OH NHPh CI OH +E

A: The question is based on the concept of organic synthesis.We need to synthesize the product using…

Q: Which of the following laws explains the following statement? Acetylene gas, regardless of its…

A: This is the law of chemical proportion .

Q: Copper(II) sulfate forms a bright blue hydrate with the formula CuSO4⋅?H2O(s) . If this hydrate is…

A: Molar mass of Cu is 63.55 g/mol Molar mass of S is 32.07 g/mol Molar mass of O is 16 g/mol Molar…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A:

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: FeSO4   +   Potassium phosphate  à  Iron (II) phosphate  +  K2SO4 Identify the spectator ions

A:

Q: Which of the following metals is least chemically reactive?  potassium  sodium  iron  magnesium…

A: The reactivity of s block metals are very high due to presence of just either 1 or 2 electrons in…

Q: In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant…

A: Given, mass of copper (II) nitrate hydrate is 34.8243g and when heated the mass is 27.0351g.

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: Fill in the blanks.

A: The balanced chemical equation for this reaction is: NH3 + Br2 + H2O → NH4Br + HOBrNH3 is…

Q: Jennifer was a pre-pharmacy student and enrolled in general chemistry laboratory. One day the lab…

A: Here we are required to find the unknown hydrated salt .

Q: Which of the following would be the major product(s) of the reaction below? HBr А. yes B. no OH Br…

A:

Q: NH3CI Br xs NaOH

A: Synthesis of piperidine

Q: Consider the reaction of the production of lead  2PbO+PbS=3Pb+SO2   What is the theortical yield of…

A: The objective of this question is to calculate the theoretical yield of lead (Pb) that can be…

Q: Calculate the mass of tetraborane (B4H₁0) that contains a billion (1.0 x 10°) hydrogen atoms. Be…

A: Given,number of atoms of H = 1.0 x 109 atoms.

Q: Elemental chlorine exists in nature as diatomic molecules of Cl2. Could the process you used to…

A: Chlorine is a halogen with atomic number 17. It has one unpaired electron in its outermost orbital.…

Q: Lithium metal has an atomic radius of 152 pm. The molar mass of lithium is 6.94 g/mol and Avogadro`s…

A: Atomic radius = 152 pm = 152 × 10-10 cm  Avadagro constant = 6.022 × 1023  per mol  Molar mass of…

Q: Br CF3CH,OH ?

A: This is an example of nucleophilic substitution reaction (SN¹). in first step,  loss of bromide ion…

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: What, specifically, is CaCl2?

A: Chemical formula: The formula that bears the symbols of the elements that make a compound along with…

Q: Describe how the following changes are brought about: (i) Pig iron into steel. (ii) Zinc oxide into…

A: ( i ) Pig iron into steel: Pig iron is charged into basic oxygen furnace (BOF) and water cooled…

Q: Balance the following chemical equation (if necessary):

A:

Q: The zinc inside the penny reacted with acetic acid (C

A: Chemical reactions are expreseed in equation form , these equations are called " chemical…

Q: What kind of molecule can you make by moving Cl = Chlorine and Mg=Magnesium?

A: Combination reaction is a type of synthesis reaction in which two or more atoms or molecules…

Q: Write the balanced chemical equation for the fermentation of sucrose (C12H22O11) by yeasts in which…

A: Balanced chemical equation of a reaction is written according to law of conservation of mass.…

Q: Select all the meso compounds. CI ....|Cy Br Br

A: A molecule containing two or more chiral centers, but the molecule is optically inactive due to…

Q: What is the total number of carbon atoms on the right-hand side of this chemical equation?…

A: To answer this question we need to count the total number of atoms of carbon (i.e.- "C") on the…

Q: Write the complete balanced equation for the combustion of octane (C8H18), which is one of the most…

A:

Q: If the magnesium strip weighed 0.51 g, what would the theoretical yield (in grams) of H2 gas be?…

A: Given :- mass of Mg strip = 0.51 g  To calculate :- theoretical yield of H2 gas (in grams)

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.