Be sure to answer all parts. How many moles of cobalt (Co) atoms are there in 3.00 x 10° (3.00 billion) Co atoms? x 10 mol Enter your answer in scientific notation.

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: E A D B Where would the bicyc...

A: Answer: This question is based on the conservation of energy according to which total energy ( which...

Q: You are asked to prepare a pH = 3.75 buffer solution starting from 1.25 L of a 1.00 M solution of hy...

A: Given: pH of solution = 3.75 Volume of HF solution = 1.25 L Concentration of HF = 1.00 M Ka of HF = ...

Q: What is the Ksp for the following reaction if the concentration of La3+ was measured to be 9.2 × 10-...

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Q: 0.04 nm 104° +) A) Suppose the center of a water molecule was positioned 1.0nm away from a 2nC posit...

A: A) As we know, a charge is a source of e ll electric field,in which electric dipole (water molecule ...

Q: Be sure to answer all parts. Heating copper(II) oxide at 400°C does not produce any appreciable amou...

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Q: What concentration of Cu2+ is needed to have a concentration of Cu(CN)42- equal to 2.0 × 10-5 M in a...

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Q: Na Be nalt Nos Bea no NaNo3 Sodum BeNo3 Berylom Nihake B(POD [NO3] NäPo [PO4]3- Beryliun he Beat' Io...

A: Chemical formula comprises of cation and anion.

Q: Click in the answer box to activate the palette. Balance the equation representing the reaction betw...

A: Given 

Q: r answer below the formula. Identify the classification of each structural formula of biomolecules. ...

A:   Biomoelcules:   All living bodies are composed of several lifeless substances which are present in...

Q: A student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. When the solve...

A: Given that, a student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. Wh...

Q: You are assigned as a design engineer to design a Carbon Dioxide Capsule (CO2). The design means you...

A: Given: Diameter of cylindrical float = 0.45 m Radius of cylindrical float = 0.225 m length of float ...

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

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Q: (CH,(CH,),CH,) Liquid octane reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (...

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Q: 12.62 A solution of 2.50 g of a compound having the empirical formula C,H,P in 25.0 g of benzene is ...

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Q: A 13.6 mL solution of 0.100 mol L-1 CH3COOH is titrated using 0.150 mol L-1 NaOH. What is the pH of ...

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Q: calculating the concentration of acid in each buffer

A: Concentration of acetic acid (weak acid) = 1.10 M Concentration of sodium acetate (salt) = 0.90 M pK...

Q: Click in the answer box to activate the palette. Determine the empirical formula of a compound conta...

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Q: Which of the following is NOT an intermediate in the following process? H3O*, Heat OH NH NH3* а. H20...

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Q: 2. Aluminum bromide (AIBR3) and sodium hydroxide (NAOH) react to form aluminum hydroxide (Al(OH)3) a...

A: Detail mathematical calculation for number of moles finding is shown below

Q: nat No 1beat NANO3 Sodum Belves) Berylwm Aihake (NO:]* NäPO BPOe [PO4]3- Na Ton [SO:]? S05 Beat Sodu...

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Q: It is the process wherein light elements such as Helium and Hydrogen form. A. Big bang nucleosynthe...

A: The lightest elements  such as hydrogen, helium, deuterium, lithium were produced in the Big Bang nu...

Q: Which of the following techniques would NOT result in a titration error? a. Adding 100mL of distille...

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Q: Calculate the change in pH when 0.0017 mol of HNO3 is added to 0.100 L of a buffer solution that is ...

A: Answer: In this question we have to calculate the pH of the buffer solution before and after the add...

Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have...

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Q: reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versus time yields a straigh...

A: AB-->A + B  Slope = 0.052 mol.L^-1.s^-1 Initial concentration = 0.52 mol.L^-1  Final concentratio...

Q: A chemist measures the amount of nitrogen gas produced during an experiment. He finds that 87.8 g of...

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Q: What is the Molarity of a hydrochloric acid solution that has a volume of 1800 mL and contains 441 g...

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Q: What mass of solid magnesium phosphate is formed when 250mL of 0.225 M magnesium hydroxide are mixed...

A: when 250mL of 0.225 M magnesium hydroxide are mixed with 150 mL of 0.150M phosphoric acid. To find :...

Q: 7. Draw the structural formula of: 5,5-diethyl-2,2,4-trimethyloctane

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Q: Which of the following values will yield the weakest type of acid in the dissociation of an acid? *

A: Answer = 1.2 x 10-2

Q: I need help with making an ir spectrum Analysis for Cyclohexanone  that includes in a table: Ir ab...

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Q: Click in the answer box to activate the palette. Balance the equation representing the reaction betw...

A: Given statement is :  Balance the equation representing the reaction between Iron(III) oxide, Fe2O3,...

Q: How many milliliiters of a 1.25 M HF are needed to make 150 mL of a 0.450 M hydrofluoric acid/fluori...

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Q: 12.57 Pheromones are compounds secreted by the females of many insect species to attract males. One ...

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Q: i. 4-ethoxy-2-methyl-hex-1-ene j. 3-isopropoxy-butan-1-ol

A: Given,  i) 4-ethoxy-2-methyl-hex-1-ene  j) 3-isopropoxy-butan-1-ol 

Q: 1) NABH,, ELOH 2) H°, H,O

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Q: How much heat is required to raise the temperature of 1.5 x 103 g of water from 45'F to 130."F? The ...

A: Given-> Weight of water = 1.5 × 10^3 gm T1= 45°F = 8.3°C T2=130°F = 55.5°C Specific heat of water...

Q: QUESTION 1 During an experiment, a student mixed 14.5 mL of a 0.500 M sodium fluoride solution with ...

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Q: How much heat (kJ) is evolved when 4.50 g of Fe203 is reacted with excess carbon monoxide using the ...

A: Detail mathematical calculation for heat evolved is shown below

Q: A mixture of xenon and hydrogen gas is compressed from a volume of 93.0 L to a volume of 89.0 L, whi...

A: Given, Initial volume (Vi) = 93.0 L Final volume (Vf) = 89.0 L Pressure (P) = 75.0 atm Work done on ...

Q: A chemist determines by measurements that 0.0900 moles of fluorine gas participate in a chemical rea...

A: Given- Moles of fluorine gas particle =0.0900mol

Q: Which of the following processes is exothermic, given the following N2lg) + 202lg) - N204) AH"=9.67 ...

A: Any reaction that gains energy is endothermic while exothermic reaction looses energy. So, for exoth...

Q: A chemist measures the amount of chlorine gas produced during an experiment. She finds that 1.35 g o...

A: According to mole concept, one mole of a substance = One gram molecule = GMW = N molecules Further, ...

Q: Mass of beaker 50.5g Mass of marble before reaction 3.0g Mass of marble after reaction 1....

A: Formula of marble-   CaCO3 Reaction of marble with HCl CaCO3 (s) + 2 HCl (aq) →CaCl2 (aq) + CO2 (...

Q: Which of the following is CORRECTLY matched? Select one: O a. Zn2* with Ka[Fe(CN)c]: white precipita...

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Q: ACIDS: Acid is one of the four classification of compounds. (Sentence 1: Acids can have a chemical f...

A: Physical properties of acids:

Q: ACT 3 Colligative Properties of Nonelectrolyte Solutions Review Questions 12.39 What are colligative...

A: Vapour pressure -  The  pressure exerted by the vapour in the equilibrium with liquid is called as v...

Q: Starting with benzene and using anoy other reagents if your choice, design a synthesis for each og t...

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Q: Enter your answer in the provided box. Calculate the standard entropy change for the following react...

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