Which of the following is a heterogeneous mixture

A) A hot cup of coffee

B) Hot tea

C) A milk chocolate bar

D) A fruit salad

Which ion is the only negative ion produced by an Arrhenius base in water? (1) NO3 - (3) OH- (2) Cl - (4) H-

How many grams of magnesium is needed to produce. 0054g of hydrogen gas?

Is the only known planet that is able to support living organisms. 1 - Mercury 2 - Earth 3 - Mars 4 - Venus

Why do most items puffed with nitrogen?

An apparatus consists of a 3 L flask containing nitrogen gas at 17◦C and 822 kPa, joined by a valve to a 10 L flask containing argon gas at 17◦C and 59 kPa. The valve is opened and the gases mix.

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