What percentage of water vapour is in the air?

Blue vitriol is commonly used in industrial dyeing processes. what is the chemical formula for blue vitriol, whose systematic name is copper (ii) sulfate?

What is the difference between molecular and ionic compound

Which of the following would you expect to form an ionic bond when combined? a. K + and H+ b. Ba2 + and CI- c. Se2 - and F- d. Si and O

The additional work performed by women (employed mothers) is sometimes called A. Late-shift B. On-going-shift C. Second-shift D. Double-shift

A balloon contains 0.5 L of air at 101.5 kPa. You squeeze it to a volume of 0.25 L. What is the pressure of air inside the balloon? Assume the temperature and amount of gas remain constant. a. 50.8 kPa b. 0.25 kPa c. 102 kPa d. 203 kPa

For each bond, choose δ + and δ - from the dropdown menu to show the direction of polarity. indicate which bond is expected to be the most polar.

Write an equation to show how hco3 - can act as a base with hs - acting as an acid.

Which statement best describes the property of metals

What is the correct unabbreviated electron configuration of the following?: vanadium: strontium: carbon:

A gas occupies a volume of 140 ml at 35.0 c and 97 kpa. what is the volume of the gas at stp