Pouvez-vous m'aider svp a cette question:Le cylindre en fer a la même masse que le bloc de polystyrène. Quelle différence y a t il alors entre les deux.

crude oil is an example of element compound mixture

1. Heat transfer takes place when: A. thermal energy is present. B. None of these C. there is a temperature difference. D. conduction or convection occurs, but not radiation. 2.

Semimetals is a term which refers to what

Give 4 Economics activities associated with water

How does the size of a nucleus compare to the amount of space that electrons have to orbit around it

Determine the molar mass of an unknown monoprotic acid to two decimal places if 20.01 ml of a 0.098 m naoh solution were used to titrate 0.215 g of the unknown acid

A diatomic molecule with a triple covalent bond is A. H2 B. N2 C. O2 D. Br2 (P. S. The answer turned out to be B. N2)

Consider the following half-reactions: Half-reaction E° (V) I2 (s) + 2e - 2I - (aq) 0.535V 2H + (aq) + 2e - H2 (g) 0.000V Zn2 + (aq) + 2e - Zn (s) - 0.

Where did the longest tsunami form?

Calculate the number of H atoms in 0.190 mole C 6 H 14 O .