Answer:
From the periodic table, Atomic number of fluorine is 7 and atomic mass is 19
The standard of something as measured against other things of a similar kind; the degree of excellence of something
Answer:
<h2>mass = 524.7 g</h2>
Explanation:
The density of a substance can be found by using the formula

Making mass the subject we have
<h3>mass = Density × volume</h3>
From the question
Density = 1.98 g/mL
volume = 265 mL
Substitute the values into the above formula and solve for the mass
That's
mass = 1.98 × 265
We have the final answer as
<h3>mass = 524.7 g</h3>
Hope this helps you
Answer:
Form a question about her observations, then make a hypothesis to answer that question.
Explanation: