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When the following equation is balanced the coefficient of oxygen gas is _______. __C3H4(g) + __O2(g) → __CO2(g) + __H2O(g)

What is the correct formula for nitric acid? (Hint: -ic acid → -ate or -ous acid → -ite)

When magnesium metal and chlorine gas undergo a combination reaction. What is the formula of the resulting compound?

What is the coefficient of potassium chloride when the following equation is balanced? __KClO3(aq) → __KCl(aq) + __O2(g)

When the following equation is balanced the coefficient of carbon dioxide gas is _______. __C3H4(g) + __O2(g) → __CO2(g) + __H2O(g)

When solid calcium carbonate is heated, it forms two new compounds, solid calcium oxide, and carbon dioxide gas. This is an example of a _______ reaction.

  SECTION C     QUESTION 5 The following photo shows the results obtained after litmus paper was used to determine the pH of two different substances A and B. Right click on the blue button below to view the photo of the results in a new tab to answer the questions that follow:           

5.2 What will the pH value be of a substance that is a weak base?   (1)

4.2 Write a chemical equation for the reaction of phosphorus with oxygen (you do not need to balance the equation). (2)

Click on the button below to view the periodic table of elements and answer the question that follows. Right click on the blue button below to view the periodic table of elements in a new tab:       4.7 In which period is phosphorus found on the periodic table? (1)