Above a pressure of 200 atmospheres and at a temperature of 100 degrees Celsius, water is in gas phase.

True or false?

Chemical changes can affect physical and chemical properties, whereas physical changes can affect___. A. chemical properties B. physical properties C. both chemical, and physical properties D. None of the above

When taking liquids from a reagent bottle A. discard any leftover reagent in the sink and flush with water B. pour the reagent into a small beaker before using it C. use your plastic pipet to remove it neatly and directly from the container D.

Hydroxylamine is a weak molecular base with kb = 6.6 x 10-9. what is the ph of a 0.0500 m solution of hydroxylamine?

Assume that in each pair of compounds be - low the type of crystal structure is similar. Consider the strength of the attractive force bonding the ions together in each compound. In which case would the relative strengths be ranked correctly? 1.

Which phase change has more kinetic energy:boiling or melting?

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.

Is calcium carbonate a compound element or mixture?

Why do covalent bonds not involve the transfer of electrons