A rock is 6.5% by mass fayalite (Fe2SiO4), 14.2% by mass forsterite (Mg2SiO4), and the remainder silicon dioxide. What is the mass percent of each element in the rock?

Q: 900. mL of 0.20 % (m/v) NaCl from 6.9 % (m/v) NaCl  what is the initial volume in mL?

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Q: Solid KI has the so-called aCl structure. The shortest distance between the centre of a potassium ca...

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Q: Calculate the pH of a 0.10 M HNO, solution.

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Q: sodium hydrogen carbonate (NaHCO3) was reacted with an excess of 5.00 M hydrochloric acid (HCI). The...

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Q: Given that K for H

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A: Given, Volume of HCl & NaOH solution = 50.0 mL Concentration of HCl & NaOH solution = 1.00 M...

Q: ENERGY

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Q: initial activity of the sa

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Q: Order the following three solutions from smallest to largest pH: (i) 0.030 M Ba(OH) 2  (ii) 0.040 M ...

A: Given,  (i). 0.030 M Ba(OH)2 (ii). 0.040 M KOH (iii). pure water Order the following three solutions...

Q: 6. Calculate the mass of 4.50 moles of CazPO4 . O 968 g O 215 g O 0.0209 g O 87.1 g 7. The molecular...

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Q: What is the energy (in kJ) of 3.00 moles of photons of visible light, that all have a wavelength of ...

A: Given mole = 3 

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Q: The total number of binary collision of molecular oxygen in a vessel at 25degree celcius 2 atm in 15...

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A: Organic reaction mechanisms:

Q: Define 1. Solution 2. Solute 3. Solven

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Q: DAl Assistive Technologies for S X O MYCSU - Columbus State Link to AL https://www-awu.aleks.com/ale...

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A: Answer is below

Q: Consider the following reaction: 2 NO(g) + Cl2(9)= 2 NOCI(g) At a certain temperature, an equilibriu...

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Q: 2. Balance the following equations (in the formation of heavier elements). a.*He +He - Be b. “He +n ...

A: Given nuclear equations are :  a). 4He + 4He -----------> Be  b). 4He + n -------------> 4He  ...

Q: The chemical reaction of silver nitrate with sodium carbonate produces silver and sodium nitrate. a...

A: (a)              Balanced Chemical equation between AgNO3 and Na2CO3             Na2CO3(aq) + 2AgNO3...

Q: rate law

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Q: Sodium hydroxide is used to clear clogged drains. A solution of NaOH has a pH of 9.52 at 25C. What a...

A: PH  is a negative logarithm of concentration of H+  ions.  PH = -log [H+]  POH = -log[OH-]  PH + POH...

Q: 1) Draw the mechanism/intermediates and predict the products for the following Claisen Condensation ...

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Q: <chapter 3 Item 2 I Review I Constants About which other carbon-carbon bonds may rotation occur? For...

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Q: which class of enzymes catalyzes the given reaction

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Q: A 12.345-g sample of a solid mixture, containing both sodium hydroxide (NaOH) and sodium hydrogen ca...

A: For the produced CO2 gas,  Volume, V = 1.171 L Temperature, T = 23.3 °C                          = (...

Q: Chromium is electroplated industrially by the electrolysis of solutions of K2Cr2O7. How much time wo...

A: Time taken to deposit 1 Kg of Cr is 55677.36 sec or 15.4659 hr.

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Q: e weight percent

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

Q: Calculate the pH for the following solutions: a. [H,Oʻ] = 1.4 × 10³M b. [OH'] 3.5 x 102M

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Q: mountain dew has a pH of 3.3. what is the concentration of H3O+ ?

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Q: or each solute, identify the better solvent: water or carbon tetrachloride. Water, H,O Carbon tetrac...

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Q: If the Ka of a monoprotic weak acid is 4.7 x 10-6, what is the pH of a 0.49 M solution of this acid?...

A: Given Ka = 4.7 x 10-6 C = 0.49 M  

Q: In a constant-pressure calorimetry experiment, Maria mixed 100.0 mL of 1.00 M H2C2O4 solution and 10...

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Q: Bry - NaOH

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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.