The answer is C: hydrogen bonds. Explanation: The surface tension and the capacity for heat storage in water are due to its hydrogen bonds. Water molecules have a strong attraction to one another through hydrogen bonding. These bonds are continuously forming and breaking within water molecules. The result of this hydrogen bonding is surface tension, which allows water to have a greater capacity for heat retention. Consequently, during the night, the temperature on Earth drops much faster than it does for water, as water gradually releases heat, helping maintain a moderate atmospheric temperature at night.
The correct answer is Option A.
The calculation goes as follows:
Number of millimoles of Na3PO4 = 1 × 100 = 100
Number of millimoles of AgNO3 = 1 × 100 = 100
Dissociating 1 mole of Na3PO4 yields 3 moles of sodium ions and 1 mole of phosphate ions, whereas 1 mole of AgNO3 releases 1 mole of Ag+ and 1 mole of NO3-.
The Ag+ ion concentration becomes negligible since it forms a precipitate with the phosphate ion, indicating that the concentration of phosphate ions is also low.
With 100 millimoles of Na3PO4, we get 300 millimoles of Na+ and 100 millimoles of PO43-, and with 100 millimoles of AgNO3 we have 100 millimoles of Ag+ and 100 millimoles of NO3-.
Thus, the order of increasing concentration is: PO43- < NO3- < Na+.
Answer:
B 1.0 g
Explanation:
Greetings,
Upon analyzing the significant figures, it's evident that 1 g has merely one significant figure. Consequently, among the provided choices, we should go with the one that closely matches this, hence the right answer is B 1.0 g since this measurement fits the required value.
Best wishes.
<span>Due to constraints in typography, I will describe the equation instead of providing it in writing.
Crude representation.
18 18 0
F --> O + e
9 8 1
In detail, each of the three components includes both a left superscript and a left subscript, differing from the standard placement on the right side that is typically used. The equation depicts F, with a left superscript of 18 and a left subscript of 9, representing fluorine with an atomic weight of 18 and 9 protons.
Followed by a right arrow showing the reaction's direction.
This is followed by the letter O with a left superscript of 18 and a left subscript of 8, indicating oxygen with an atomic weight of 18 and 8 protons.
Then a plus sign appears to indicate addition.
Lastly, either the lowercase letter "e" or the uppercase Greek character beta, with a left superscript of 0 and a left subscript of 1 or +1, denotes the emission of a positron, which has a positive charge and an atomic weight of 0.</span>
To solve this problem, an equation that encompasses all this information is required. The Ideal Gas Law, represented as PV=nRT, is the one we'll utilize. However, it's necessary to convert some figures into alternate units for accurate calculations. We will convert Celsius to Kelvin and Pascals to atmospheres (1 atm = 101300 Pa), allowing us to substitute and simplify:
PV = nRT
(0.1185 atm)V = (17 mol)(0.0821 L•atm/K•mol)(307.15 K)
0.1185V = 428.689
V = 3617.63 L
Since the inquiry requires the volume in cubic meters, recall that 1 m^3 is equal to 1,000 liters. Therefore, dividing the obtained value by 1,000 will yield the answer.
Thus, the tank will hold a volume of B, 3.62 m^3.
I hope this clarifies the question!
