Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Chemical Formulas and Equations Exercise

5 Questions

1 Views

Chemical Formulas and Equations Exercise

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the valency of the metal X in the compound XCl2?

The valency of the metal X in the compound XCl2 is 2+.

State the formula of the sulphate and the hydroxide of the metal X.

The formula of the sulphate of the metal X is XSO4 and the formula of the hydroxide is X(OH)2.

Write the balanced equation for the combustion of the trivalent element X in oxygen.

The balanced equation for the combustion of the trivalent element X in oxygen is X + O2 -> X2O3.

What is the valency of nitrogen in the compounds NO, N2O, and NO2?

<p>The valency of nitrogen in NO is 2, in N2O is 1, and in NO2 is 4.</p> Signup and view all the answers

What is meant by the term ‘symbol’ in the context of chemistry?

<p>Symbol is the short form that stands for the atom of a specific element. It represents both the qualitative meaning, where it stands for a specific element, and the quantitative meaning, where it represents the quantity of the element, i.e. atomic mass of the element.</p> Signup and view all the answers