Solving Tasks 18 and 19 in OGE Chemistry — PickAClass
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⏱ 2h 42m 📚 27 lessons 🎧 Audio version

Solving Tasks 18 and 19 in OGE Chemistry

Learn how to calculate mass fractions, analyze chemical formulas, and solve applied quantitative exam problems with step-by-step written guide.

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About this course

Tasks 18 and 19 in the OGE Chemistry exam test your ability to carry out practical quantitative calculations using chemical formulas and real-world contexts. Mastering these tasks requires a clear understanding of mass fractions, molar masses, and mathematical proportions. This course breaks down every step into simple, readable explanations so you can approach exam questions with complete confidence. You will start with essential terminology and core mathematical concepts before applying them to typical exam scenarios. What you will learn: - Understand fundamental concepts including molar mass, mass fraction, and chemical percentage composition - Calculate mass fractions of elements in various chemical substances accurately - Apply proportional reasoning to solve real-world quantitative chemistry problems - Practice structured problem-solving strategies tailored specifically to Tasks 18 and 19 - Learn standard conventions for unit conversion, calculation rounding, and final answer formatting The course begins with foundational definitions and reference tables embedded in written lessons, progressing directly to guided text breakdowns of exam-style calculation tasks. This program is ideal for middle school students preparing for the OGE Chemistry exam who want to secure maximum points on practical calculation questions. Begin reading today to sharpen your calculation skills and succeed on exam day.

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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  • 🎧 Audio version included
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  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • ⚡ Short & focused
    2h 42m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
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has successfully demonstrated mastery of
Solving Tasks 18 and 19 in OGE Chemistry
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A/B test design
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Solving Tasks 18 and 19 in OGE Chemistry
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
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pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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