0.71 g Cu equals how many moles

Determine the number of significant figures for the following: a. 34.6209 b. 0.003048 c. 5010.0 d. 4032.090

Which pair below describes isotopes of the same element? A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons B) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons C) an atom with 8 protons and

The original substance in a chemical reaction; either disappears or diminishes

A student observes a blood sample with a compound microscope that has a 10x ocular month and a 40 X objective lens how much larger do the blood cells appear under the microscope

Which of the following shows the path followed by nerve impulses in a reflex? A. motor neurons → interneurons in brain → sensory neurons B. sensory neurons → interneurons in brain → motor neurons C.

Consider these two electron configurations for neutral atoms l and m. l - 1s22s22p63s2 m - 1s22s22p63s13p1 what is the atomic number of l

A chemist in an imaginary universe, where electrons have a different charge than they do in our universe, performs the millikan oil drop experiment to measure the electron's charge. the charges of several drops are recorded below.

When an ionic bond forms, which part (s) of the atoms are directly involved?

When a 3.00 g 3.00 g sample of KBr KBr is dissolved in water in a calorimeter that has a total heat capacity of 1.36 kJ ⋅ K - 1, 1.36 kJ⋅K-1, the temperature decreases by 0.370 K. 0.370 K. Calculate the molar heat of solution of KBr. KBr.

How many moles of oxygen are required to fully react with 100 kg of lead sulfide?