What is the density at 27 °C of 28.0 milliliters of a liquid that has a mass of 4.05 grams?

Explanation:

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

From the question

mass = 4.05 g

volume = 28 mL

We have

We have the final answer as

Hope this helps you

just did the assignment and the answer was #1 +2 n

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.