Answer:
Volume = 30cm³
Explanation:
A block is a geometrical figure and its volume, -look at the figure-, follows the equation:
Volume = Width*Length*Height
As the measurements of the block are 5.00cm, 3.00cm and 2.00cm, the volume is:
Volume = 5.00cm*2.00cm*3.00cm
<h3>Volume = 30cm³</h3>
Answer:
Groups 1, 2, 13-18
Explanation:
The periodic table is divided into two broad categories: Main Group Elements and Transition Metals. The Main Group Elements include the alkali metals, alkaline earth metals, halogens, noble gases, and any groups not mentioned (see the answer).
C10H8N2O2S2
C=12,H=1,N=14,O=16,S=32
R. F. M (Relative Formula Mass)=(12*10)+8+(2*14)+(2*16)+(2*32)
Number of moles =given mass/formula mass
=29/252
=0.1151 moles
Just remember how many electrons can each sublevel hold.
S=2
P=6
D=10
Since we have 10 for atomic number, we can assume we have 10 electrons
1S2
2S2
2P6
The rest have zero because we already have 10 (2+2+6=10)
Answer:
The higher the hydronium ion concentration of a solution, the <u>lowe</u>r its pH.
Explanation:
Consider a <em>high</em> hydronium concentration, 1 mol·L⁻¹.
pH = -log[H₃O⁺] = -log1 = 0
Now consider a <em>low</em> hydronium ion concentration, 10⁻¹⁴ mol·L⁻¹.
pH = -log(10⁻¹⁴) = 14
Thus, a <em>high</em> hydronium ion concentration means a <em>low </em>pH.