4) I have a 52.4 g sample of lead with a volume of 10 cm3. What is its density?

Density = 5.24 g/cm³

Explanation:

The density of a substance can be found by using the formula

From the question

mass = 52.4 g

volume = 10 cm³

Substitute the values into the above formula and solve for the density

That's

We have the final answer as

Density = 5.24 g/cm³

Hope this helps you

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later