If an element has an atomic mass of 127 and an atomic number of 53, how many neutrons does it have? 74 127 53 75

How much significant figures does 147,320 have

How does a trigonal pyramid differ from a tetrahedron so far as molecular geometry is concerned? Bond angles in the tetrahedral molecule are 120°, while those for trigonal pyramid are 109.5° A trigonal pyramid is a tetrahedron with two vacant vertex.

Moldear una plastilina es un cambio fisico o quimico.

The natural gas in a 30-L NGV fuel tank has a pressure of 2.05 * 10^4 kPa at a temperature of 297 K. How many kilograms of fuel are in the tank

Calculate the volume occupied by 0.15mol of CO2

If atmospheric pressure suddenly changes from 1.00 atm to 0.892 atm at 298 k, how much oxygen will be released from 4.40 l of water in an unsealed container?

Determine the molecular formula for the unknown if the molecular mass is 60.0 amu and the empirical formula is ch2o.

Draw the organic product of the following nucleophilic reaction

How does the energy of the activated complex compare with the energies of reactants and products? select one: a. it is lower than the energy of both reactants and products. b.

A student asked to convert measurements from liters to mililiters and from mililiters to liters. His answers are shown in bold in the choices shown below. On which choice did he make a mistake?