A particular neutral uranium atom has 92 protons 143 neutrons and an atomic mass of 235 how many electron does the atom have

A bowl of trail mix and a bowl of soup are examples of what type of matter? 9 (a) solution (b) heterogeneous mixture (c) element (d) compound

What volume is needed to store 0.050 moles of helium gas at 202.6 kPa and 400 K? (Given: R = 8.314 L∙kPa/K∙mol) A) 1.218 L B) 121.8 L C) 0.820 L D) 8.21 L E) 82.1 L

Which energy carries are formed by light dependent reaction

A mimosa plant folds its leaves when they are touched. This response is an example of

A specific steroid has λmax = 259 nm and molar absorptivity ε = 11,500 l mol-1 cm-1. what is the concentration of the compound in a solution whose absorbance at 259 nm is a = 0.065 with a sample pathlength of 1.00 cm?

Question #21TrueFalse The general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a complex a. True b. False

what kinda energy is produced when a force causes a substance to vibrate, and the energy is transferred through the substance in a wave.

What is similar to iodine by chemical characteristics

The arrangement of electrons in the orbitals of an atom

A sample of C3H8 has 4.64 * 1024 H atoms. How many carbon atoms does the sample contain?