A student human a cell with a microscope observes a cell wall a cell membrane and a nucleus the presence of these structures indicates that the student is looking at a cell from a

a. rabbit

b. carrot

c. worm

d. Fly

An iron bar at 325 K is placed in a sample of water. The iron bar gains energy from the water if the temperature of the water is (1) 65 K (3) 65°C (2) 45 K (4) 45°C

What is a compound in chemistry

Which statement describes how the binary ionic compound CaCl2 is named? A. The nonmetal is named first, and the ending is replaced with - ide. B. The metal is named first, and the ending is replaced with - ide. C.

Suppose you are on a winter vacation, and a big snowstorm hits. The electricity in your cabin goes off. You have a woodstove to keep you warm, but you have no water because the well has an electric pump. You were hoping to make instant hot cocoa.

Identify the predominant intermolecular forces in each of these substances. Note: If you answer any part of this question incorrectly, a single red X will appear indicating that one or more of the phrases are sorted incorrectly. 1. H 2 O 2.

Anatom that has lewer neutrons than protons and more electrons than protons is

Which can have either a positive charge or a negative charge when they are released during radioactive decay? A. alpha particles B. beta particles C. positrons D. photons

Which ionic compound is water soluble? A. cuS B. NH4NO3 C. SrSO4 D. ZnF

What is part of an experiment that is not being tested and is used for comparison

Is hydrogen sulfide a heterogeneous mixture solution compound or element?