Calculate the mass in amu of 75 atoms of aluminum

What new characteristic did John Dalton add to the model of the atom? (A) An atom is a round, solid mass. (b) An atom has a massive, positive center. (C) An atom is made up of smaller particles. (D) An atom can join with other kinds of atoms.

Researchers have found forms of synesthesia that affect every sensory modality. Which of the following best describes the way it was experienced by Cytowic's friend? (A) Visual stimuli elicited the sensation of a taste.

Hf is a stronger acid than nh + 4. which base would be stronger: f - or nh3? 1. f - 2. both bases would be equal in strength. 3. nh3 4. cannot tell from the information given. 5. neither f1 - nor nh3 would be bases.

To take measurements in the upper troposphere, which instrument would a scientist use

A moss begins to grow on a rock in an area that was previously uninhabited by life. This is an example of what?

Which group of the periodic table does this element most likely belong to

What is the ph of a 7.5*10^-3 m H + solution

How many atoms of hydrogen are there in one molecule of C3H5 (OH) 3?

Transferring or sharing electrons between atoms forms

Ions that consist of a single atom are called ... ions