Density = Mass / Volume
V = 1.00 * 4.00 * 2.50 = 10 cm³
22.57 g/cm³ = Mass / 10 cm³
M = 22.57 g/cm³ * 10 cm³
M = 225.7 g
Answer: The mass of the block of osmium is 225.7 g.
Answer:

Explanation:
In this case, we can start with the <u>formula of Platinum (II) Chloride</u>. The cation is the atom at the left of the name (in this case
) and the anion is the atom at the right of the name (in this case
). With this in mind, the <u>formula would be</u>
.
Now, if we used <u>metallic copper</u> we have to put in the reaction only the <u>copper atom symbol</u>
. So, we have as reagents:

The question now is: <u>What would be the products?</u> To answer this, we have to remember <u>"single displacement reactions"</u>. With a general reaction:

With this in mind, the reaction would be:

I hope it helps!
<span>Many scientific investigations have provided evidence to support this as the best explanation of the data</span>
I will Answer it and get back to u in the the comment section
Answer:
<h3>The answer is 8.2 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 62.4 g
volume = 7.6 cm³
We have

We have the final answer as
<h3>8.2 g/cm³</h3>
Hope this helps you