What is the chemistry sign for floride?

mr lee owns a toystore. he orders 20 toys consisting of airplanes cars and trains. the number of airplanes is 2,3

What is the total amount of heat absorbed by 100.0 grams of water when the temperature of the water is increased from 30.0°C to 45.0°C? (1) 418 J (3) 12 500 J (2) 6270 J (4) 18 800 J

Identify the strongest attractive forces between the particles of each of the following A. CH3OH B. CO C. CF4 D. CH3-CH3

Some elements are liquids or gases. True False

Classify each of the following changes as Physical or Chemical: (a) Coal burning (b) ice melting (c) mixing chocolate syrup with milk (d) explosion of a firecraker (e) magnetizing of a screwdriver

Why do cells have a plasma membrane? A. to separate protein from the nucleus B. to distinguish plants from animals C. to define the size of the cell D. to separate the inside of the cell from its enviroment

Base on its molecular mass, what is the molar mass of iron

For the following reaction in aqueous solution, identify all those species that will be spectator ions. Select all that apply. Na, SO4+Hg (NO3) 2HSO4+2NaNO3 Choose one or more: A. Hg2S04 B. Na2S04 C. Nat D. NO3 E. SO42- F. Hg2 (NO3) 2 G. NaNO3 H.

One mole of which hydrocarbon requires 8 mol o2 to achieve complete combustion to give carbon dioxide and water?

How many bromine atoms are present in 39.9 g of CH2Br2