Sam is heating water on the stove for his science experiment. How will he know when it is boiling?

A. It will be warm.

B. There will be bubbles forming in the water.

C. The water will turn bluish.

D. The temperature will rise to 80 degrees Celsius.

Which substance in the reaction below either appears or disappears the fastest? 4NH3 + 7O2 → 4NO2 + 6H2O Which substance in the reaction below either appears or disappears the fastest?

What is the method used to prepare emulsion

Why is nuclear fission a type of nuclear reaction?

2) suppose you discovered a new element with 120 protons and 2 electrons in its outermost energy level (valence shell). a. in which group does this new element belong? b.

A liquid has a mass of 54.5g and a volume of 50.0 mL. calculate the specific gravity. How would I work this out

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.

The tapeats sandstone in the grand canyon is an example of a clastic sedimentary rock. such clastic sedimentary rocks can be distinguished from biochemical sedimentary rocks by

An ice cube and a scoop of table salt are left outside on a warm, sunny day. Explain why the ice cube melts and the salt does not

Which atomic orbitals overlap to form the C-O bond of dimethyl ether, (CH3) 20? O c 2sp^3 + 2sp^3 OC 2sp^2 + 0 2p O c 2sp^2 + 0 25p^2 O C 2sp^3 + O 2sp?

For the reaction CO+2H2=CH3OH at 700 K, equilibrium concentrations are [H2]=0.072 M, [CO] = 0.020M, and [CH3OH] = 0.030 M. Calculate K