When does a substance have a definite shape?

a. when the substance is a solid.

b. when the substance is a liquid.

c. when the substance is a gas.

d. when the substance is a plasma.

The equilibrium vapor pressure is achieved when the rate of evaporation equals what? a. rate of sublimation b. rate of condensation c. rate of freezing d. rate of melting

If 1.3 L of C3H8 combusts according to the equation below, how much CO2 will be produced? C3H8 (g) + 5O2 (g) - -> 3CO2 (g) + 4H2O (g)

What is 23. 34 cm to mm

When is potential energy transformed into kinetic energy. A. when an object at rest is lifted to a higher elevation. B. when an object at rest remains at rest. C. when an object at rest is put into motion. D.

Express 0.000000384 in scientific notation

Which class of organic compound would neutralize a carboxylic acid? O aldehyde amine alkyl halide ether

Calculate the molarity of the solution. 29 g of NaCl (g. f. w. = 58.5 g/mol) in 0.030 liters. 0.015 M 17 M 67 M

How can scientists study the composition of distant stars?

When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e. g.

From A complete stop a car reaches a velocity of 280 KM/S east in 7 seconds what is the rate of acceleration? A. 4 KM/S B. 7 KM/S C. 40 KM/S D. 70 KM/S