7. All atoms of the same element have the same

O mass numbers

O number of neutrons

O number of protons

O mass

g A mixture of gases contains 6.46 g of N2O, 2.74 g of CO, and 5.40 g of O2. If the total pressure of the mixture is 4.33 atm, what is the partial pressure of each component? a) P (N2O) = 0.635 atm, P (CO) = 0.424 atm, and P (O2) = 3.27 atm.

Which element is reduced in the following reaction: 2Mg+O₂ → 2MgO if Mg goes from 0 to + 2 and O goes from 0 to - 2? Mg and O O Mg Neither element

Which of the following elements would you expect to have the lowest ionization energy value, and why? Fluorine (F), because it is a halogen that naturally forms a negative ion Lithium (Li), because it has a low effective nuclear charge and large

Why won't water reform to an ice cube if you freeze it?

What is the smallest particle of an element that still retains properties of that element?

What is an element that has more valence electrons than fluorine and less energy levels than sodium?

Why can't we breathe in pure oxygen for long

In warm water conditions, female offspring hatch from eggs laid by painted turtles. Male offspring are produced under cold conditions.

It takes 53.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0∘C to 24.2 ∘ c. What is the specific heat for the metal?

What happens to the velocity of a sound wave in air if the temperature of the air increases