Answer:
1.626 M
Explanation:
Let's start by <u>calculating how many grams of C₂H₆O₂ are there per mL of solution</u>:
- 1 mL of solution weighs 1.40 g.
- 1.40 g of solution * =0.1008 g C₂H₆O₂
So the C₂H₆O₂ concentration can be expressed as 0.1008 g/mL.
Now we <u>convert g/mL to molarity</u>, using the <em>molar mass of C₂H₆O₂:</em>
- 0.1008 g C₂H₆O₂ ÷ 62 g/mol = 1.626x10⁻³ mol C₂H₆O₂
(1 mL = 0.001 L)
- 1.626x10⁻³ mol C₂H₆O₂ / 0.001 L = 1.626 M
Cylinder A - Adding 25 grams raised the water level by roughly 3.2 mL
Cylinder B - Adding 25 grams raised the water level by roughly 2.8 mL
Cylinder C - Adding 25 grams raised the water level by roughly 3.5 mL
Calculate grams/mL (density)
A. 25 g/3.2 mL = 7.8125 g/mL = Iron
B. 25 g/2.8 mL = 8.9286 g/mL = Nickel
C. 25 g/3.5 mL = 7.1429 g/mL = Zinc
Hope I helped!
Answer:
sp³
Explanation:
Number of hybrid orbitals = ( V + S - C + A ) / 2
Where
H is the number of hybrid orbitals
V is the valence electrons of the central atom = 5
S is the number of single valency atoms = 4
C is the number of cations = 1
A is the number of anions = 0
For PCl₄⁺
Applying the values, we get:
H = ( 5+4-1+0) / 2
= 4
<u>This corresponds to sp³ hybridization.</u>
Answer: Because hydrogen is a gas.
Explanation: If children were running around with balloons filled with hydrogen gas, then they would catch fire. So the answer to your question is, its simply dangerous.
Answer:
D
Explanation:
All of the above are great examples!
<em>"Endothermic reactions are those which absorb heat during the reaction."</em>