238 U 92 is an isotope notation. what is the atomic number, mass number, number of protons, and number of neutrons?

What assumptions are we making when we infer the mass of a galaxy cluster from observations of the spectra of its constituent galaxies?

Which elements are designated as the alkaline- earth metals? How do their characteristic properties compare with those of the alkali metals?

Select all of the answers that apply. Which of the following are ways the atmosphere supports life? contains trace gases blocks harmful UV rays transports and distributes heat cycles essential elements: C, O, and N

What happens to the anode in an electrochemical cell

1) It does not conduct electricity in water. 2) It must have a molarity higher than 1.0 M. 3) It does not ionize well in water. 4) It is a strong electrolyte.

If molar mass of M (OH) 3 = 78 8. mass of M

Cynthia gets two glasses of cold water. She sets both glasses down. She sets one in the sunlight. The second she sets in the shade. As the glasses of water sit, what will happen to the temperature of the water? A.

Jenny wants to determine if a. brand name washing. detergent is better then her old detergent. She washes 10 dirty t - shirts with the new washing detergent and 10 dirty t-'shirts with the old detergent identify the.

What can you conclude about why Arrhenius bases are considered a limited case of Bronsted-Lowry bases. A) All Arrhenius bases can act as proton acceptors. B) Arrhenius bases release hydronium ions in solution.

If a girl is dating a guy and the guy is a catfish, what should the girl do to prove it?