What is the mass of 4.6 moles of helium gas?

How many valence electrons does a neutral atom of oxygen have?

Which of the group ivb (14) metals is the least active?

A buffer that contains 0.123 M acid, HY, and 0.211 M of its conjugate base, Y-, has a pH of 8.67. What is the pH after 0.0018 mol of Ba (OH) 2 is added to 0.325 L of this solution?

Convert 870 kg to pounds

One molecule of water (H2O) contains two atoms of hydrogen and one atom of oxygen. A hydrogen atom has a mass of 1.0 u and an atom of oxygen has a mass of 16 u, approximately.

All of the following are diatomic molecules except? a) H b) Br c) CI d) S

How is radiation related to electromagnetic waves and thermal energy?

For the reaction a+2b→c under a given set of conditions, the initial rate is 0.180 m/s. part a what is δ[b]/δt under the same conditions?

What is the number of oxygen atoms in the ring portion of the haworth structure of glucose?

Explain what it means by a balanced chemical equation