WILL MARK BRAINLIEST!! Which situation indicates a beta emission?

The atomic number increases by one, but the mass number does not change.

The atomic number decreases by two, and the mass number decreases by four.

The atomic number decreases by one, and the mass number decreases by one.

The atomic number and the mass number both decrease by two.

What is a property of a double replacement reaction

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

Which type of precipitation would most likely form when the surface air temperature is slightly below freezing and the air temperature increases as you move upward away from the ground?