Which statement best describes the nucleus of an aluminum atom?

What is true about the phase changes of water? a. When ice melts, the ice and the water are at the same temperature c. Both a and b b. When water freezes, the water and the ice are at the same temperature d. None of the above

Oh no! The thermometer punctured a hole in the bottom of the coffee cup, and water is spilling out. Check all actions you would take. Throw the broken pieces away. Use the punctured cup as the outside cup, not the inside cup.

Calculate the molarity of a 23.55-ml solution which contains 28.24 mg of sodium sulfate (used in dyeing and printing textiles, = 139.04 g/mol).

What do the horizontal lines represent in periodic table?

Explain the steps needed to convert the mass of an element to the number of atoms of the element

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.

Is calcium carbonate a compound element or mixture?

Why do covalent bonds not involve the transfer of electrons