Which of these refers to atoms with the same atomic number but different atomic masses?

The first element of family 16

A hot air balloon, when fully inflated, contains 2,800,000 Liter of air. If each mole of air occupies 22.4 L of at a temperature of 120 Celsius, at what pressure is the air at when the balloon is fully inflated?

How do balanced chemical equations show the conservation of mass?

Which of the following is a factor of the environment that determines the speed of a wave? Group of answer choices the period the medium the source the wavelength

In a container filled with one mole of helium and one mole of nitrogen the pressure in the container is primarily?

The Minoan civilization existed on the island of Crete, and it was influential in the Mediterranean during the 2000s BCE. In which way can the Phoenicians be described as successors to the Minoans? A. Phoenicia had a powerful, well-trained army. B.

In a distillation experiment, Provide reasons for any discrepancies between the initial volume of the liquid mixture (20ml) and the sum of the total final volume (18.4ml). Take into account water's property of solvent.

1. Bromine is a A. black solid B. red liquid C. colourless gas D. highly inflammable gas 2. The hardest substance available on earth is A. Gold B. Iron C. Diamond D. Platinum 3.

What does a positive standard reduction potential mean about a given element? The element is more readily oxidized than hydrogen. The element is more readily oxidized than most other elements. The element is more readily reduced than hydrogen.

Which statement correspond to a cellular respiration