An atom is described as a nucleus of protons and neutrons surrounded by a (n)

A) protons.

B) neutron cloud.

C) electron cloud.

D) negative force.

Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or superoxide. (a) H3PO4 (b) Al (OH) 3 (c) SeO2 (d) KNO2 (e) In2S3 (f) P4O6

Calculate the volume in liters of a barium acetate solution that contains of barium acetate. Be sure your answer has the correct number of significant digits.

Use the following reaction: C4H9OH NaBr H2SO4 C4H9Br NaHSO4 H2O If 15.0 g of C4H9OH react with 22.4 g of NaBr and 32.7 g of H2SO4 to yield 17.1 g of C4H9Br, what is the percent yield of this reaction

Combustion of ethylene glycol leads to a change in internal energy (/DeltaU) of - 1189 kJ at 298 K. What is the corresponding change in enthalpy in kJ/DeltaH? HOCH_2CH_2OH (l) + 5/2 O_2 (g) → 2 CO_2 (g) + 3 H_2O (l) / DeltaU = - 1189 kJ

When the fluid cools, the kinetic energy of the inolecules decreases. This causes the molecules to slow down and move closer together. Sines the molecules are closer together, the density of the fluid increases and the fluid sinks.

discuss the origin of the line citing the bohr theory of the atom specify any energy transitions that are applicable

What does the chemical formula of an ionic compound represent?

The wavelength of some yellow light is 580.0 nm. What is the frequency of this yellow light?

A sample of chlorine gas contracts from 550 mL to 376 mL when it is cooled from 63 °C to 12 °C. If the initial pressure of the chlorine was 725 torr, what is the final pressure of the chlorine?

The skin and lungs get rid of this waste? What does it het rid of?