Chlorophyll, the green colouring matter of plants responsible for photosynthesis, contains 2.68% of magnesium by mass. How much chlorophyll contain 1.75x1024 magnesium atoms? Answer in kilograms. 1.34 kg 2.16 kg 2.64 kg 1.45 kg

Q: 1. A 0.0250 M Ca(X)₂ has a pH of 8.049. Ca(X)₂ is composed of a Ca²+ cation and an unknown anion X,…

A: Given,  Molarity of Ca(X)2 = 0.0250 M.  The pH of the solution = 8.049 The kb of X-  is:

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Q: ANSWER ALL THE QUESTIONS BELOW What is the molality of a solid solution containing 1.576 g of iron…

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Q: 1. A 0.0250 M Ca(X)₂ has a pH of 8.049. Ca(X)₂ is composed of a Ca²+ cation and an unknown anion X,…

A: Dear student, since the given question is a mutipart question, hence I solved first three subapart…

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A: Titration  is done to find outh the concentration  of unknown  solution using a known solution.

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Q: The numbers of amino acid synthesized in our body * O (a) 20 O (b) 30 O (c) 40 O (d) 10

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Q: Your lungs are 5.23 L and 310.0 K at 1.01 atm. If 80.0% of the air is N2 and 20.0% is O2 what is the…

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Q: Description Solve the following problems 1. Calculate the percentage composition of C6H12O6 2.…

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Q: Chemistry Select the choice with words that best fills in the blanks in the following statement The…

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Q: 3. You can dissolve a precipitate of AgBr by reacting it with Na2S2O3, as shown here. AgBr(s) +…

A: Given reaction is :  AgBr (s) + 2Na2S2O3 (aq) ----------> Ag(S2O3)23- (aq) + Br- (aq) + 4Na+ (aq)…

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A: Note - Dear student, since the given question is a multiple question, hence I solved first question…

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A: Thermoplastics is an example of  = Polymer matrix composites

Q: 1. A student constructed a voltaic cell using nickel and lead as electrodes. He also used 0.25 M…

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Q: 5.2,5.3) The isotope lithium-7 has a mass of 7.02 amu and a percent natural abundance of 92.6 %. The…

A: Isotope is defined as which have same atomic number but different mass number.

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Q: An acid ionization constant for (a) acetic acid is 1.3 x 105 and 4.9 × 10 ¹0 for (b) hydrocyanic…

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Q: 2. A water tank contains 7.50 x 10³g water. Will the addition of 1.20 x 10³g ethylene glycol…

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Q: is This is an oxidation/reduction equation: ___CH3COOH(aq)     +     ___ H2O(l)            ___…

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Q: A solution of hexane, C6H14, in benzene, C6H6, has a molality of 0.250 m. What mass of hexane is…

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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.