GCSE Chemistry: Balancing Equations W. Matthews OITAUG AUD OOAJAB 6. Mg + O2 → MgO Left Right Mg 7. K,CO, + H,SO, → K,SO, H2O Left Right C 8. PbO + HNO, → Pb(NO3)2 + H,O Left Right Pb H.

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A: A question based on introduction to chemistry that is to be accomplished.

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Q: The chemical formula for sodium bromide is NaBr. A chemist measured the amount of sodium bromide pro...

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Q: QUESTION 1 How many mmols of HBr are in 17.6 mL of 0.0200M HBr? QUESTION 2 What is the calculated eq...

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Q: 3) What volume (in mL) of guanidine, CH5N3, is required to prepare 250 mL of the following solutions...

A: Density of guanidine (CH5N3) = 1.18g/ml Mol. mass of guanidine = 59.072g/mol (Calculated according t...

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Q: Label the conjugate acid-base pair for each of the following: H20 2 C3H5O2 + H30 HC3H5O2 + HCIO + OH...

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Q: A He-Ne laser has a gas discharge temperature of 400 k. The atomic mass of Ne (which is responsible ...

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Q: The following reaction reaches equilibrium in a closed reaction vessel. 3 Fe(s) + 4 H,O(g) = Fe,O,(s...

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Q: For each pair below, briefly explain and illustrate why the structure circled is most stable. A-valu...

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Q: In the reaction between 7.0 moles of Na and 4.0 moles of Chlorine, to produce NaCl, which of the two...

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Q: 1. Prepare a 2 M NaCl soln; 1000 ml final volume; MW = 58.5 grams

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Q: Yajaira GCSE Chemistry: Balancing Equations W. Matthews BALANCING EQUATIONS Balance the following eq...

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Q: If a sample of Argon gas occupies 2.50 L at 100.0 °C and 5.00 atm, what volume will it occupy at 0.0...

A: This is an example of Gas laws- Ideal gas equation PV = nRT Formula P1 x V1 / T1 = P2 x V2 / T2

Q: The chemical formula for sodium bromide is NaBr. A chemist measured the amount of sodium bromide pro...

A: A question based on mole concept that is to be accomplished.

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Q: Question 3 Calculate the pH of the following solutions: 0.035 M HNO3 solution 5.25 x 10° M Sr(OH)2 s...

A: 0.035 M HNO3 5.25 x 10-6 M Sr(OH)2

Q: Write a brief explanation about importance of measurements in chemistry.

A: Accurate, precise measurement is a fundamental component of good science. For this reason, scientist...

Q: Q: A cylinder containing CH4, C;H6, and N2 has to be prepared in which the ratio of the moles of CH4...

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Q: Question 13 Calculate K for N2H4+2 H202 N2+4 H20 based on the following data: N2H4 - 02 N2+ 2H20 K= ...

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Q: CONVERSION FORMULA

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Q: Question 5 How many grams of NaH2C6H5O7 must be added to a 300 mL solution of 0.15 M H3C6H507 (Ka = ...

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Q: Oxidize the below molecule as many times as possible. Then name each product. CH,

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Q: Question 2 The reaction 2NO2 2NO +O2 (K=0.50) is at equilibrium when PNO2=0.16 atm and PO2 = 0.22 at...

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Q: Draw the alcohol from which you could make 3-pentanone. Hint: Start by drawing 3-pentanone and then ...

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Q: How many g of sodium formate should be added to 250 ml of 0.2 M hydrochloric acid solution to obtain...

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Q: Lead (Pb) is a heavy metal which has a leaching rate of about 0.0012 mg/L per year. Consider a lake ...

A: Leaching rate of Pb = 0.0012mg/L per year Volume of lake = 2.25x10^9 L Mass of Pb present initially ...

Q: How many grams of NaH2C6H5O7 must be added to a 300 mL solution of 0.15 M H3C6H507 (Ka= 3.2x 10) to ...

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Q: Starting from a terminal alkene R-CH=CH2, is there any advantage in using the two-step protocol (hal...

A: MCPBA is also has tendency to react with ketone and give ester group. 

Q: Question 14 A 0.125 M solution of HNO2 has a pH = 2.08. What is Kg for HNO2?

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Q: For the reaction 2A → B + C, which of the following statements is true?     C is produced at the s...

A: Given, for a reaction 2A → B + C 1) C is produced at the same rate as B is produced.

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Q: [H*]?

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Q: Question 4 Which of the following is not used in protein structure determination? O treatment with a...

A: Proteins can be defined as the large macromolecules that are made up of one or more amino acids.

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Q: k1 A 2 2B k-1 [A]o = 1 M, [B]o = 0 M k1 and k-1 are 0,01 s-1 and 0,04 M-1 s-1 find the time required...

A: Given:  [A]O = 1M  [B]o = 0 M  K1 = 0.01 s-1  K-1 = 0.04 M-1 s -1 As per the units of rate constant ...

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