What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Uppose the reaction between naphthalene and 2-bromo-2-methylpropane did not run to completion, so that the limiting reagents were not consumed.

2ZnS+3O2=2ZnO+2SO2 how many miles of excess react ant remain

Identify the base in the reaction ch3cooh (aq) + nh3 (aq) → nh4 + (aq) + ch3co2 (aq)

Which best describes the purpose of a controlled experiment describes the purpose of a controlled experiment?

When [ ] are around an ion, what does it represent? It is an aqueous solution. The concentration of the ion is in moles/liter. The ion is reacting.

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.

How are the number of protons and the number of neutrons related?

If a sample of copper with a density of 8.90 g/cm3 displaces 13.0 mL of water when placed in a beaker, what is its mass? a 1.46 g b. 0.685 g c. 116 g

Which statement accurately describes the origin and expansion of the universe