Question

what historical scientists were crucial in understanding waters molecular composition? * 2 points
lavoisier and cavendish
newton and einstein
curie and bohr
darwin and mendel
what is the ph value of pure water? * 2 points
10
7
14
0
how do water molecules interact through hydrogen bonding? *
by complete electron transfer
through mechanical pressure
randomly and chaotically
through partial positive and negative charge attractions

Explanation:

• For the first question: Antoine - Laurent Lavoisier and Henry Cavendish made contributions to understanding water's molecular composition. Lavoisier was involved in chemical reactions related to water, and Cavendish's work on hydrogen and oxygen reactions was relevant. Newton and Einstein are mainly in physics (mechanics and relativity respectively), Curie (radioactivity) and Bohr (atomic structure), Darwin (evolution) and Mendel (genetics) are not related to water's molecular composition study.
• For the second question: Pure water has a pH of 7. A pH of 0 is highly acidic, 10 is basic, and 14 is very basic.
• For the third question: Hydrogen bonding in water occurs through partial positive (on hydrogen) and partial negative (on oxygen) charge attractions. Complete electron transfer is for ionic bonds, mechanical pressure is not relevant to hydrogen - bond formation, and it is not random and chaotic.

Answer:

1. Lavoisier and Cavendish
2. 7
3. Through partial positive and negative charge attractions