Chemistry Homework Assistance

QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.

You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.

1 Explain why hydrogen gas 'pops'when a lighted splint is applied. [2 marks] 2. a Write a word equation for the reaction of magnesium carbonate plus dilute sulfuric acid, which produces carbon dioxide gas. [1 mark] b Look at the apparatus in the Practical box Testing for carbon dioxide gas! Carbon dioxide gas is denser than air. Suggest an alternative way to collect the gas from the reaction in part a and to test it with limewater. [3 marks] 3 During the electrolysis of a chloride solution, a student predicted that a mixture of chlorine and oxygen gases would be given off from the anode. Suggest how you could test this prediction. [6 marks] 4 a i Write a balanced symbol equation, including state symbols, to describe the reaction between magnesium and dilute hydrochloric acid, to produce hydrogen gas. [3 marks] (H) ii Write an ionic equation, including state symbols, for the reaction in part i. [3 marks] (H) b In the reaction in part a, which species is reduced and which is oxidised? Explain your answer. [4 marks]

CCSE Science -Chemistry Question 13 of 60 What state symbol is used to show that a substance is in liquid form? Enter your answer

A solution was tested with a pH sensor and the reading was found to be 9. Is it a solution of an acid or an alkali? cllsell

Question 44 of 47 A substance with a pH of 3 was mixed with methyl orange indicator. Which of the colours below did the indicator change to?

Use the table below to work out the mass in grams of 1 mole of carbon dioxide. Enter your answer as a number Element & Relative atomic mass (Ar) mathrm(H) & 1 mathrm(C) & 12 mathrm(O) & 16 mathrm(Na) & 23 mathrm(Ca) & 40