80. When water forms ice, hydrogen bonds around a water molecules are at ... apart. 1.
30 °C
2. 45 °C
3.
90 °C
4.
180 °C
5. 35 °C
6. I do not know.
N

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)