How to find the mass number of an atom with 45 neutrons and 35 electrons?

What type of bonding would be expected between Copper and Sulfur

In an effusion experiment it required 40 s for a certain number of moles of a gas of unknown molar mass to pass through a small orifice into a vacuum. Under the same conditions 16 s were required for the same number of moles of O2 to effuse.

A sample of gas occupies a volume of 54.6 mL. As it expands, it does 149.1 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas?

How does earth maintain its energy balance

UuestoNS NIU The no. of millimoles of HCl required to neutralize 10 ml of 0.2 M Na2CO3 is (a) 2.0 m mole (b) 4.0 m mole (c) 0.2 m mole (d) 0.4 m mole

What are all the elements to the left of the zigzag line in a periodic table called?

Gravitational force is produced by ___ between objects

Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined? A. the loss of metallic propertiesB. the formation of bands in a crystalC. the loss of valence electrons to other atoms D.

Which particles can be stopped by human skin?) alpha and beta particles only alpha particles alpha and gamma particles beta and gamma particles

How might you identify hydraulic system