A sugar crystal contains approximately 1.8*1017 sucrose (C12H22O11) molecules. What is its mass in milligrams?
Solution: To go from molecules to milligrams, we will first need to convert molecules to moles using Avogadro’s number, then convert moles to grams using Molar Mass of the molecule(C12H22O11) and finally convert grams to milligrams (1g=1000mg).
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ToggleFacebookTweetPin Nitric acid is a component of acid rain formed when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid. Write a balanced chemical equation for this reaction . Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous…
FacebookTweetPin Which of the following molecules can exist as Z or E isomers? Draw the (E) and (Z) forms. If one of the carbons on the C=C is attached to two same groups (such as two hydrogens), it can not have E/Z configuration. For example, if we look at the double bond in the top…
FacebookTweetPin Resonance Forms Practice And Solutions Write all possible resonance structures and be sure to include formal charges where appropriate. Include lone pairs of electrons if they are not shown. Do you want to print and work on my Resonance Practice Worksheet? Here you go! Do you want to see all the answers to the…
FacebookTweetPin A 0.135 M solution of a weak base has a pOH of 2.77. Calculate the Kb of the base. LINKS: Organic Chemistry Tutoring Organic Chemistry Study Guides FacebookTweetPin
FacebookTweetPin Given the two reactions:CuCI(s) + Cl–(aq) ⇋[CuCI2]–(aq) K= 5.2×10-2 Cu+ (aq) + 2Cl–(aq)⇋ [CuCI2]–(aq) Kf= 3.0×105What is the value of Ksp for CuCI? Solution: Ksp is the solubility product equilibrium constant. To write the Ksp expression, first you need to write an equation where ionic solid is on the reactant side and aqueous ions it dissociates into are on the product side. CuCl(s)⇋Cu+ (aq) + Cl–(aq).You need to add to equations in such…
FacebookTweetPin Regents Chemistry Practice Problems : NUCLEAR CHEMISTRY Topics include: Table O, Table N, types of radioactive decay, balancing nuclear reactions, fusion and fission, half live calculations. REGENTS CHEMISTRY COURSE August 2024 1. 2. 3. June 2024 4. 5. 6. January 2024 7. 8. 9. REGENTS CHEMISTRY COURSE and other topics practice.Regents Chemistry Review with…
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