Predict the product of each reaction

1. Write the Xnotation for each atomic depiction: (a) Z 18e 18p 20n% (b) 25e 25p* 30n (c) 47e 47p* 62n

Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element? Explain your answer.

o Now.pdf Balance the following equations: (these chemical equations are unbalanced): 1) 2) 3) NaBr + H3PO4 PbSO4 → Mg + Open with Fe₂O3 Group 1 Na3PO4 + Group 2 PbSO3 + Group 3 Fe + HBr MgO EC

Please explain how you can identify your target molecular compounds contain isotopes of chloride and bromine?

What is the relative abundance of isotope A?

10 (c) An element T has a melting point of 30°C and a boiling point of 2440 °C. It conducts electricity at room temperature. It burns in oxygen to form an oxide with formula T₂O₂ which can react with both acids and bases. T also forms a compound with fluorine, which has a high melting point and conducts electricity in molten form. The approximate relative atomic mass of T is 70. (1) What type of oxide is T,O,? (i) Give two properties that indicate that T is probably a metal. 1. 2 (iii) Predict the formula for the fluoride of T E [1] [2] N [1] (iv) What are the products of the electrolysis of the molten fluoride of using inert electrodes? and (v) In which group and period of the Periodic Table will T be placed? group period 21 2) (vi) Write the symbol of the element in the Periodic Table which most closely resembles T.

6.) which of the following will have a product? Feo + Ni²* (aq) Au + Al³+ Al" → (aq) Nao + Zn?* + Zn²+ + (be) (aq) Al (s) 9 + Au" (aq)

Aunt Julie went to the jewelry store to buy a gift for her amiga. As an aunt from Poveda, she knows that the karat scale is based on mass percentages. She was also informed by Uncle Bruno that pure gold is equivalent to 24 karats. If she bought a bracelet made of gold alloy that is 50 mol% silver and 50 mol% gold, what is the karat number of the bracelet?

The decay series of Uranium 238 includes 3 isotopes. Which one has the greatest abundance in a sample of pitchblende ?