Scientists can make new elements by forcing particles together. How do you know that all of the new elements will be larger than uranium?

Fluorin is often added to drinking water and toothpaste

2N2O (g) + 3O2 (g) 4NO2 (g). Which equilibrium expression is correct?

Magnesium reacts with nitrogen oxide to form ... ?

Can periodic table indicates occurrance of the elements, why?

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes? A. Molecules in both the metal and the surrounding air will start moving at lower speeds. B.

Why does acetone have more surface tension than methanol?

What is the vapor pressure of the solution if 15.0 g of water is dissolved in 100.0 g of ethyl alcohol at 25 ∘C? The vapor pressure of pure water is 23.8 mmHg, and the vapor pressure of ethyl alcohol is 61.2 mmHg at 25 ∘C.

When 500 mL of 0.100 MAgNO3 is combined with 500 mL of HCl in a coffee-cup calorimeter, the temperature changes from 23.40 ∘C to 24.21 ∘C. Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and C=4.

How much heat is required to warm 1.30 l of water from 24.0 ∘c to 100.0∘c? (assume a density of 1.0g/ml for the water.) ?

how many protons electrons and neutrons does a atom with the atomic number 50 and mass number 125 contain?