What is the atomic number of an atom that has 18 protrons, 15 neutrons and 29 electrons?

A balloon with a volume of 2.0 L at 25°C is placed in a hot room at 35°C. The pressure on the balloon is constant at 1.0 atm. What is the final volume of the balloon after it has been placed in the hot room?

Between the 18 groups on the periodic table, which group is most likely to give away an electron during bonding?

A mole of cu atoms has the same number of atoms as a mole of he atoms. true false

How does the energy needed to overcome the energy barrier compare with the overall change in energy for this reaction?

A longitudinal wave causes its medium to move in what direction? O A. Perpendicular to the direction the wave travels. B. Parallel to the direction the wave travels. C. Both perpendicular and parallel to the direction the wave travels. D.

Explain the difference between biotic and abiotic

Lab 27. stoichiometry and chemical reactions: which balanced chemical equation best represents the thermal decomposition of sodium bicarbonate?

An ideal gas will occupy 22.4 L at standard temperature and pressure. What is this volume in cubic centimeters? - cm3

When placed in a freezer, liquid water turns into ice. What best describes this change?

Which of the following has only one loop for a current to flow through A) parallel B) series