Whats the defenition of elements? I know what it means but I cant explain it lol

Consider these ground-state ionization energies of oneelectron species: H = 1.31 x 10³ kJ/mol He⁺ = 5.24 x 10³ kJ/mol Li²⁺ = 1.18 x 10⁴ kJ/mol (a) Write a general expression for the ionization energy of any one-electron species.

Which of the following statements is true about calorimetry? Heat released by the system is equal to heat released by the surroundings. Heat absorbed by the system is equal to heat absorbed by the surroundings.

Do atoms lend and borrow electrons from inner shells

We can dilute an aqueous solution by adding liquid water to the solution, resulting in a less concentrated solution.

Suppose you are studying two stars. Both stars have the same apparent magnitude, but star A has a greater absolute magnitude than star b. What can you tell about the distance from Earth of these two stars?

How many gold atoms would have to be lined up to span 6.5mm

Determine how many grams of co2 are produced by burning 4.37 g of c4h10.

Which of the following expressions is equivalent to 7x + 9y - 6 - 3y + 4? A 7x + 4y B 11xy C 7x + 6y - 2 D. 7X+4

Which pair of elements would form an ionic bond? A: C-O B: Sr-CI C: Cs-Ge D: Mg-AI

Which type of bonding involves the complete transfer of a valence electron from a less electronegative atom to a more electronegative one?