If a 10.0 g mass of aluminum increases from 20.0 °C to 35.0 °C, how much heat was required? (0.903 J/g°C)

An iron atom has an atomic number of 26 and an atomic mass of 55.8 amu. How many protons does an iron atom have?

A concentrated solution has: a) more particles per litre than a dilute one b) bless particles per litre than a dilute one What is the answer? a or b?

Which is not a property of a gas? Select one: A. Gases are highly compressible. B. Gases form homogeneous mixtures with one another in any proportion. C. The densities of gases are much larger than those of corresponding liquids. D.

Compared to the terrestrial planets, the Jovian planets are

Convert 850cal into joules.

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Which laws can be combined to form the ideal gas law? Boyle's law and Charles's law Gay-Lussac's law and Avogadro's law Charles's law, Avogadro's law, and Boyle's law Dalton's law, Gay-Lussac's law, and Avogadro's law

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink