Question

homework: electron configuration
complete the following homework assignment. retake up to 5 times to improve your score.
1 formula 1 point
what is the density of a metal that weighs 9.58 g and has a volume of 8.7ml? express your answer with 2 decimal places.
answer
2 multiple choice 1 point
using the periodic table, what is the predicted last orbital notation for actinium (ac)?
4f^7
5f^1
6d^1

Explanation:

Step1: Recall the density formula

Density ($
ho$) is calculated as $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Substitute the given values

Given $m = 9.58$ g and $V=8.7$ mL. So, $
ho=\frac{9.58}{8.7}$.

Step3: Perform the division

$\frac{9.58}{8.7}\approx1.10$ (rounded to 2 decimal places).

Answer:

$1.10$ g/mL