CloudLabs Common vs Lumi

This simulator recreates a laboratory where you will find a bottle with ammonium, a bottle with ammonium chloride, a dropper with phenolphthalein and two pipettes. The objective of the practice is to find the equilibrium constant and determine the amount of ammonium chloride that is needed to have a given concentration of ammonia in solution.

Learn Spanish the way that actually sticks — a little every day, with lessons you can finish on a coffee break. Lumi turns Spanish into bite-size steps. You start at A1 and climb through 33 structured milestones, each built around real-life situations: greetings, ordering food, the gym, family, shopping and more. Every lesson mixes clear grammar, interactive quizzes and flashcards so the words actually stay in your head. WHY LEARNERS CHOOSE LUMI • Bite-size lessons — most take about 5 minutes. Perfect for busy days. • Learn by doing — multiple-choice and fill-in-the-blank exercises on every screen, not endless reading. • Instant feedback — see your score the moment you finish, then tap "Review your mistakes" to fix exactly what you got wrong. • Flashcards that work — master vocabulary by topic with quick, swipeable card decks and progress tracking. • A clear path — many milestones take you from your first "hola" toward confident, everyday conversation. • Real-life Spanish — learn the phrases you'll actually use, from "un desayuno en mi cocina" to talking about your family. HOW IT WORKS 1. Pick a topic and start a lesson. 2. Practice with quizzes and flashcards. 3. Check your score and review your mistakes. 4. Keep your streak and unlock the next milestone. WHAT YOU'LL LEARN • Essential grammar: pronouns, verbs, conjugation and sentence building • Everyday vocabulary grouped by real situations • Listening and reading through natural example sentences • The confidence to speak Spanish from day one Download Lumi and turn five minutes a day into real Spanish. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lumilanguages.com/policy.html