Which of these follows a cyclical pattern?

A. sunspot maxima and minima

B. condensation of a nebula

C. formation of a crater

D. formation of a black hole

All metals a melt at high temperatures b conduct heat and electricity c contain iron d react with air and water

How many miles of N2o2 in 76 g? molar mass is 92.02g

What type of reaction takes place between propene and chlorine? Write down the chemical equation for this reaction.

A certain liquid has a density of 0.70g/m. Find the mass of 6.4L o this liquid

Which procedure did early chemists use to determine which substances were elements? A. They observed the substances that made up individual atoms. B. They mixed several substances together and observed the results. C.

In Flask A, you reacted 7.23 g Mg with 1.05 mol HCl. In Flask B, you reacted 1.22 g Mg with 1.35 mol HCl. Which balloon will inflate the most?

I have 2 electrons is the first shell, 8 in the second, and 6 in the third

The production of plastics makes life, so it benefits society. On the other hand, the production of plastics causes air and water, so it also harms society.

The total number of moles represented by 20 grams of CaCO3 is

Particles of matter how have both potential and kinetic energy is that true or false?