The difference between isotopes for the same element will be found in the atoms'

a. number of protons.

b. number of electrons.

c. number of neutrons.

d. charges.

Although DNA evidence cannot be obtained from hair evidence without a root, which of the following can be obtained from hair evidence?

Choose all possible values of each quantum number for the electron lost when an ag atom ionizes.

How many moles of CaCl2 will be produced from 1.4 moles of HCl reacting with calcium hydroxide A. 2.8 moles B. 0.70 moles

What number of Fe atoms and what amount if miles of Fe atoms are in 500 g of iron?

What is a mixture? And what is it made of from?

The difference between isotopes for the same element will be found in the atoms' a. number of protons. b. number of electrons. c. number of neutrons. d. charges.

216 J of energy is required to raise the temperature of a piece of aluminum from 15.0º C to to 35º C. Calculate the mass of aluminum used. (Specific heat of aluminum = 0.90 J ∙ º C-1 ∙ g-1)

How much of the rock cycle can be observed directly? How much must be inferred? Think about both how long things take to happen in the cycle as well as where different parts of the cycle occur. Refer to specific parts of the cycle in your answer.

How are elements arranged in the Periodic Table? A. by their properties B. alphabetically C. by how much they are worth D. in the order they were discovered

If an iron nail is placed in a glass of water the nail will sink. Is the density of iron smaller than or larger than the density of water? explain