Name two elements that have properties similar to those of beryllium, Be, and have average atomic masses higher than 130

Oxygen's atomic number is 8. This means that an oxygen atom has a. eight neutrons in its nucleus. c. eight protons in its nucleus. b. a total of eight protons and neutrons. d. a total of eight neutrons and electrons.

How many moles of atoms are contained in 15.7 g of Bromine

Which factor distinguishes a metallic bond from an ionic?

The electrons stripped from glucose in cellular respiration end up in which compound?

Which element in each pair has a greater first ionization energy? a) lithium, boron b) magnesium, strontium c) cesium, aluminum

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?

What pressure (in atm) will a sample of o2 gas occupy at 100.0 ml, if o2 has a volume of 25.00 ml at 2.0 atm?

What happens when francium and nitrogen are mixed

Which type of chemical reaction occurs in 2KClO3 Right arrow. 2KCl + 3O2