Calculate number of particles in 46 g of Na atoms

Need suggestions on where water is naturally found. I have to make an A-Z list and I already have a few but was wondering if anyone could come up with new ideas.

When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 21.6 degrees C to 37.8 degrees C. Calculate delta H (in kJ/mol NaOH) for the solution process.

Zinc (Zn loses 2 valence electrons) and Nitrogen (N) How does zinc complete the octet rule? What charge is on the zinc ion? What type of ion is zinc (cation/anion) ? How does nitrogen complete the octet rule? What charge is on the nitrogen ion?

The structure below represents a tetrahedral alkoxide-ion intermediate formed by addition of a nucleophile to a carboxylic acid derivative.

Both black and white road surfaces absorb sunlight. the warmer road surface at the end of a sunny day is the

Which planet has no atmosphere which prevents erosion?

Why must you wear safety glasses at all times

How do you classify solutions as acidic, basic, or neutral?

Which statements describe abiotic factors in an environment?

A ball rolling across the ground in Death Valley will slow and eventually stop. Why? - the ball's kinetic energy evaporates. - the ball's force is destroyed. - the friction of the ball changed the force to negative ions.