Are nails in a jar with water a chemical change

If I have 0.52 moles of sodium iodide, how much water would it take to make a 1.31 M solution?

Describe the last major earth event involving an asteroid?

A balloon vendor at a street fair is using a tank of helium to fill her balloons. The tank has a volume of 113.0 L and a pressure of 122.0 atm at 25.0 °C. After a while, she notices that the valve has not been closed properly.

Are there any molecules that form a square?

The chemical bond between which two atoms is most polar? A) C-N B) H-H C) S-Cl D) Si-O

Consider three identical flasks filled with different gases. Flask A: CO at 760 torr and 08C Flask B: N2 at 250 torr and 08C Flask C: H2 at 100 torr and 08C a. In which flask will the molecules have the greatest average kinetic energy? b.

When using a. csv file for Lookups, the first row in the file represents this?

If you were presented with 2l of a 2m sucrose stock solution, how many grams of sugar would be in a 100 ml aliquot?

1. What is something you might see a scientist doing?

Is fire living or non living