Which compound is an acid?

A. HNO3

B. NH3

C. C2H4

D. KCl

Which of dalton's postulates about atoms are inconsistent with later observations? do these inconsistencies mean that dalton was wrong? is dalton's model still useful? explain?

For an ideal gas, classify the following pairs of properties as directly or inversely proportional.

Which of the following statements is true for a decomposition reaction? A) new atoms are formed B) a single product is formed C) multiple products are formed D) multiple reactants break down

Which of these statements describes the size of an atom? A. An atom is larger than a sheet of aluminum foil. B. An atom is small but can be seen with just our eyes. C. An atom is the size of a plastic building block. D.

Which of the following is the correct formula for potassium bromide? A. K2Br B. Kbr2 C. Kbr3 D. Kbr

A cells that carry information through tour nervous system

True or False: According to the present atomic theory, the location of an electron in an atom is best represented by a probability cloud.

How can we measure the density of different wooden objects

According to molecular orbital theory, all diatomic molecules with an even number of electrons will be diamagnetic. True or False?

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2