Who was the first scientist to propose that the atom had a dense nucleus which occupied only a small fraction of the volume of the atom?

How many sex chromosomes would be present in an individual with 80 chromosomes? A) 2 B) 1 C) 39 D) 40

Which of the following statements correctly distinguishes between an acidic and a basic solution? A. An acidic solution contains a high ratio of hydrogen ions to hydroxide ions and a basic solution contains a ratio that is closer to one. B.

Draw all possible lewis structures (including resonance structures for methyl azide (ch3n3 using lewis structure rules.

Which is most likely to get hot fastest when touching a warm surface?

Which of the following substances could the unknown be: KOH, NH3, HNO3, KClO2, H3PO3, CH3COCH3 (acetone) ?

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.

To break a chemical bond, energy must be (1) absorbed (2) destroyed (3) produced (4) released

In an experiment, 132 grams of potassium bromide (KNO3) was dissolved in 100 grams of water at 70 °C in 1 minute.

Would an ice cube melts faster when you put food coloring on it

Use the following half-reactions to design a voltaic cell: Sn4 + (aq) + 2 e - → Sn2 + (aq) Eo = 0.15 V Ag + (aq) + e-→ Ag (s) Eo = 0.80 V What is the overall cell potential? Group of answer choices