What family of elements is unreactive and why?

What does the mass number tell us?

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If you stretch back a rubber band and release it, it shoots across the room. What type of energy conversion has occurred? mechanical to thermal elastic to chemical elastic to mechanical mechanical to elastic

Purple Group Header Warm-Up Why can I smell a chocolate bar even though it is a solid? Read the description of the office mystery and write your prediction below.

Recall all the models you described in task 1. Think about the results each model would predict for Thomson's experiment.

Q5.6. if calcium ions, each of which has a charge of + 2 (ca2+), moved out of a neuron, and no other ions were moving, what would be true?

Calculate the moles of new H₂ O₂ using the balanced formula below and the average moles of KMnO₄ from calculation #2. The average moles of KMnO₄ is 0.90mol. 2KMnO₄ + 5H₂O₂ + 3H₂SO₄ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂ Edit: I got 2.

What is the intermolecular Force that causes water molecules to be attracted to each other? Ionic Bond Polar covalent bond Nonpolar covalent bond Hydrogen Bond What is the molecular geometry of a water molecule?

Justin Bleeber is a lazy young man and decides to burn a pile of leaves instead of bagging it. The pile of leaves weighed three pounds before being burned. After the leaves are burned the leftover ash weighs half a pound.

A diatomic gas has the molar mass 38.00 g/mol. What is a possible formula