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.
- Number of protons and neutrons in an element of gold. A. 82,115 B. 118,79 C. 115,82 D. 79,118
- 2. Complete the paragraph by writing the words from the box into the correct spaces. [6] solute soluble solution saturated solvent insoluble When salt is stirred into water, it dissolves The salt is a __ which mixes wit the water, a __ and forms a new __ The salt can dissolv we say it is __ Pepper would not dissolve so it is __ .wr
- 25. A sample of magnesium contains three isotopes: magnesium -24 magnesium-25 and magnesium -26 with abundances of 77.44% ,10.00% and 12.56% respectively. a. Calculate the relative atomic mass of this sample of magnesium correct to two decimal places. [2] b. Predict the relative atomic radii of the three magnesium isotopes , giving your reasons.
- . A group of two or more atoms joined together.
- A substance is soluble. What does this mean? It has a low melting point It is a liquid It is pure It is unrea ctive It can dissolve