An atom has 25 protons, 20 neutrons, and 19 electrons. Which atom is this, What is the atom's mass number?

Which set of products is most likely to result from the combustion reaction shown below? C4H8 (l) + 6O2 (g) A. 2C2H4O6 (g) B. 4CO2 (g) + 4H2O (g) C. 4CO3 (g) + 4H2 (g) D. 4C (s) + 4H2O (l) + 4O2 (g)

Which of the following statements is/are true for a 0.10 m solution of a strong acid (HA) ?

Choose the substance with the highest vapor pressure at a given temperature:a. SiS2b. RbClc. CH3SCH3d. BF3e. SbH3

Which is a living part of an ecosystem? A. soil B. bacteria C. animal bones D. minerals

You collect and measure samples of ice and surrounding ice water from a stream in the winter. you find that you collected the same number of water molecules in each form. the volume of the ice samples are larger than the ice water samples.

How is an unsaturated fat converted to into a saturated fat?

Is hydrofluoric acid stronger than acetic acid?

How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?

You need a 45% alcohol solution. on hand, you have a 480 ml of a 40% alcohol mixture. you also have 85% alcohol mixture. how much of the 85% mixture will you need to add to obtain the desired solution?

Write the net ionic reation for the neutralization of hcl by naoh. calculate hrxn for reaction from the enthepies of formation of the reactiom and product