Example of gas gas mixture

Which series is correctly arranged in order of decreasing radius? A. Al^3 + > Mg^2 + > Na^ + > F^- B. F^ - > Na^ + > Mg^2 + > Al^3+ C. F^ - > Al^3 + > Mg^2 + > Na^+ D. Na^ + > Mg^2 + > Al^3 + > F^-

A sample of chlorine containing isotopes of mass numbers 35 and 37 was analysed in a mass-spectrometer. How many peaks corresponding to Cl+2 were recorded? A 2 B 3 C 4 D 5 Ans: B

Na2SO4+Ba (NO3) 2-> Complete and balance the following reaction

What is the molarity of a solution that contains 0.082 mol KI in a 2.03 L solution?

Why cant atoms of one element convert to another element?

Given the number of mols equal to 1.28 and the molarity equal to 3.4M, determine the number of liters of solution

How many moles are in 36 g of Beryllium (Be) ? a. 0.25 mol b. 4.0 mol c. 45.0 mol d. 320 mol

Under which conditions can an eclipse occur? sun blocks Earth moon blocks the sun moon blocks Earth sun blocks the moon

In DNA, what base pairs with cytosine? A. adenine B. cytosine C. guanine D. thymine

What do astronomers use to calculate the age of the universe? Check all that apply. dark energy the age of rocks on Earth the age of the oldest stars patterns of background radiation how fast distant galaxies are moving away from us