Why does a cell make a copy of its DNA before it dvides?

A) Select the strongest acid:H2Te, GeH4, AsH3, H2S, SiH3 B) Base with the highest pKb:ClO -, BrO-, BrO2-, BrO4-, ClO2- C) Acid with the lowest pKa: H3PO3, H3PO4, H3ASO4, H2SbO3 H2SbO4 D) Acid with the highest pKa: HClO4, HIO2, HBrO3, HBrO2, HBrO4 E)

How temperature can affect the speed of reaction.

An unknown solution has a pH of 8

Fatima adds 0.1 moles of hcl to a buffer mixture containing 1.0 mole of naf and 1.0 mole of hf in 1.0 l of water at 298 k. which component of the buffer mixture does the hcl react with?

If the pressure of a confined gas doubles and its volume decreases by a factor of four, how will its Kelvin temperature change?

To be considered a source of water pollution, the source must include a chemical.

2,000 kJ worth of heat is absorbs by each of the following objects. Which object will experience the smallest temperature change

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover