Devin knows that his sample of strontium sulfate, SrS04. contains 9.46 moles. How many grams is this?

Q: The element which causes the greatest polarity within an organic molecule is ___.     oxygen     ...

A: The covalent bond is formed by the sharing of electrons between the atoms.

Q: Draw the skeletal (line-bond) structure of (R)-acetic-2- methylbutyric anhydride. Use a dash or wedg...

A: We need to draw the line bond structure of (R)-acetic-2-methylbutyricanhydride

Q: A chemist prepares a solution of caiclum bromide (Calles) by measuring out 430. g of calcium bromide...

A:

Q: dentify the oxidizing and reducing agents: Cl2 + 2NaBr - 2NACI + Brz Derive, Pu= dRT from ideal gas ...

A: Reaction:-  Cl2 + 2NaBr  ----------> 2NaCl + Br2 Oxidation is loss of electrons while reduction i...

Q: Which of the following contains the most lattice energy? a) b) c) d) KCI BaCl CaS Na20

A: Answer: Lattice energy is the amount of energy gets released during the formation of 1 mole of solid...

Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 253. kJ during a ...

A: The sign convention for heat flow are as follows : When the heat flows into the system, a positive s...

Q: 5) 4-nonanone has the mass spectrum shown. Propose structures for fragment ions of m/z 142, 99,86, 7...

A: For m/z =142 Structure is :       CH3-CH2-CH2-CH2-CH2-CO-CH2-CH2-CH2+ For m/z = 99 Structure is :   ...

Q: Part A To 10Lot a 032 M soution of HCIO, is added 0.20 mol of NaCIO. Caloulate the (HCIO,) at equibr...

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Q: b) Pyrrole and indole both react with the reagents shown below to give compounds E and F respectivel...

A:

Q: Ető NaoH Hzi D R ーoR of (R)

A: The substrate molecule taken is aceto acetic ester. The methylene group between the two carbonyl gro...

Q: b) Pyrrole and indole both react with the reagents shown below to give compounds E and F respectivel...

A:

Q: A scientist measures the standard enthalpy change for the following reaction to be -133.0 kJ : 4HCI(...

A:

Q: Calculate the molal concentration of a solution of 44.9 g of naphthalene, C10H8, in 175 g of benzene...

A: Please find your solution below : Molality is a measure of concentration which is defined as the num...

Q: A chemist is studying the following equilibirum, which has the given equilibrium constant at a certa...

A: 1.) We are given am equilibrium reaction and initial pressure of Oxygen gas , Kp value. Using this w...

Q: Why is aspartate very soluble in water, whereas phenylalanine is much less soluble?

A:   Aspartate - It has a polar (hydrophilic) side chain, which forms hydrogen bonds with water. While ...

Q: Mixing water and arterial fluid in the reservoir of the machine is called secondary dilution.  True...

A: mixture of arterial fluid  with water and /or supplemental fluids is called primary dilution.   

Q: e pH of

A:

Q: Write the formula of the conjugate base of the Brønsted-Lowry acid, HBrO₂

A: Formula of the conjugate base of the Brønsted-Lowry acid, HBrO₂ ?

Q: Mass of Erlenmeyer flask: 25.52 g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime water...

A: Mass of Ca(OH) 2 = 2.92 g Density of Ca(OH) 2= 1 g/ml As we know        Density = mass/ volume We pu...

Q: An automobile engine provides 572 Joules of work to push the pistons. In this process the internal e...

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Q: A 55.7 g sample of brass is put into a calorimeter (see sketch at right) that contains 150.0 g of wa...

A:  

Q: Q/Write the possible compounds from the reaction of one and a half mole of benzaldehyde with one mol...

A: Benzaldehyde reacts with acetone and undergoes condensation reaction. Here we have to find out the c...

Q: Provide the proper IUPAC name for the alka CI HO.

A: The numbering will be start from -OH group and then double bond and in last chlorine atom.  For -OH ...

Q: Ammonia (NH3) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,0). W...

A: Here we are required to find the mass of oxygen gas consumed if it would react with 2 gm of ammonia ...

Q: Examine the molecule below, and select the statements that apply. If it can lose H", draw its conjug...

A: An acid can be defined as the substance that give hydrogen ions in solution and base is a substance ...

Q: Question 15 Coprecipitation that involves foreign particles? O Surface adsorption O Inclusion Mechan...

A: As per the company guidelines, we are authorised to solve only one question at a time.  Please post ...

Q: For the reaction of 2A - 3B, a plot of In[A] vs. time is linear with a slope of -0.20. What is the r...

A:

Q: Gaseous butane (CH;(CH,),CH;) reacts with gaseous oxygen gas (O,) to produce gaseous carbon dioxide ...

A:

Q: 4. Consider the three statements below. Which statement(s) is(are) true? 1. Hydration is a special c...

A: True or False !

Q: Draw the major product of this reaction. Ignore inorganic byproducts. 1. LIAIH4 2. H20 Select to Dra...

A: Lithium Aluminum Hydride (LiAlH4 ) is a strong reducing agent. It can reduce alcohol, ester, ketones...

Q: The term which describes the pressure exerted by a vertical column of water, based on the distance b...

A: 2nd option is correct that is hydrostatic head

Q: try [Roferences] Use the References to access important values if needed for this question. Arrange ...

A: entropy is the amount of disorder in a system First consider the phase of each compound. Entropy inc...

Q: The concept that exactly 2 electrons are shared between two nuclei means that this is a ___ bond.  ...

A:

Q: How many formula units are in 108.65g of aluminum sulfate?

A: Given data, mass of Al2(SO4)3 = 108.65 g  molar mass of Al2(SO4)3 = 342.15 g mol-1  no. of formula u...

Q: The atom that has the most electron affinity is b) Mg 30. a) Na c) Al d) S

A:

Q: This is a Brønsted-Lowry acid-base reaction. Draw structures for all the products, showing any non-z...

A: A bronsted-lowry acid can be defined as the substance that can donate a proton whereas a bronsted-lo...

Q: Suppose a 500. mL flask is filled with 0.70 mol of H, and 1.9 mol of I,. The following reaction beco...

A:           Number of moles of H2 = 0.7 mol           Number of moles of I2 = 1.9 mol    Volume of rea...

Q: Paraformaldehyde is a polymer of    A. acetone   B. paraform    C. formaldehyde    D. acetal...

A:

Q: A chemist does an experiment where he expects to produce 6.669 moles of calcium phosphate, Ca3(PO4)2...

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Q: Kristen places 1.39 ml of nitrogen gas at -38.5 °C into an insulated, adjustable flask. 2 hours late...

A:

Q: After determining the absorbance of several standards of known concentration, the trendline for a ca...

A: The equation for a straight line is given by  y=mx+c where m is the slope and c is the y-intercept. ...

Q: One form of DNA damage, methylation, destabilizes adenosine residues. At 37 °C, the t1/2 for breakdo...

A:

Q: NaOH is a strong base. HF is a weak acid. Based on these observations, one would expect the pH of a ...

A: A base releases OH- ions and an acid releases H+ ions . Both H+ and OH- ions neutralise each other t...

Q: 1)What is the concentration of the final diluted solution in mcg/mL?(1 decimal) 2) What volume of t...

A: Mass of paracetamol = 140.1 mg    Volume of solution = 200 mL            Concentration = 140.1 mg/20...

Q: Doubling a gas temperature from 100 K to 200 K causes a gas volume to double. Would you expect a sim...

A: Temperature in degree scale(oC) and kelvin scale(K) are related as following. Co+273.15=K

Q: The special molecule that removes ions, EDTA, can remove calcium ions from the blood. When it does t...

A: Correct Answer is Anticoagulant

Q: 1. Name using IUPAC substitutive nomenclatare nles

A: Write IUPAC name by using rules of that,  

Q: Determine the chemical formula for the ionic compound that forms between cesium and bromine. chemica...

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Q: The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo- 2-methylbutane as t...

A:

Q: Bromine monochloride is synthesized using the reaction Br, (g) + Cl, (g) 2 BrCI(g) K, = 1.1 x 10-4 a...

A:

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.