Answer:
nocturnal penile tumescene
Explanation:
is a spontaneous erection of penis during sleep or when waking up.
Answer:
24.24 g
Explanation:
First we <u>calculate how many moles are there in 300 mL of a 0.234 M solution</u>, using the <em>definition of molarity</em>:
- Molarity = moles / liters
Converting 300 mL to L ⇒ 300 mL / 1000 = 0.300 L
- 0.234 M = moles / 0.300 L
Then we <u>convert 0.78 moles of NH₄F into grams</u>, using its <em>molar mass</em>:
- 0.78 mol * 31.073 g/mol = 24.24 g
Answer:
grams of solution = 551.98 g
Explanation:
Given data:
Percentage of solution = 32.9
Mass of solute = 181.6 g
Grams of solvent = ?
Solution:
Formula:
% = [grams of solute / grams of solution] × 100
Now we will put the values in formula.
32.9 = [ 181.6 g / grams of solution] × 100
grams of solution = 181.6 g × 100 / 32.9
grams of solution = 18160 g /32.9
grams of solution = 551.98 g
Option A. Smaller atoms and stronger bonds.
Smaller the size of the atoms, less will be the distance between positive charge nucleus of one atom and electrons (negative charge) of other atom. This results in strong interaction between them.
Also, stronger bonds are difficult to break, making the minerals harder. Thus, small atoms and strong bonds in minerals makes then harder than the minerals with weak bonds or larger atoms.