The mass of the gas dissolved in 1.00 L of water at 25°C and 3.0 atm is equal to 1.26 grams.
<h3>How to determine the
mass of the
gas dissolved?</h3>
In order to determine the mass of the gas dissolved, we would the calculate the new (final) solubility of this gas by applying this formula:
S₁P₂ = S₂P₁
Making S₂ the subject of formula, we have:
S₂ = (S₁P₂)/P₁
S₂ = (0.42 × 3.0)/1.0
S₂ = 1.26 g/L.
Now, we can determine the mass:
Mass = solubility × volume
Mass = 1.26 × 1.00
Mass = 1.26 grams.
Read more on solubility here: brainly.com/question/3006391
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The block will sink
Explanation:
In general, an object with a higher density than water will sink in it, and one with a lower density will float. Now, to know if the block will float or sink, the first step is to calculate the density of the block, and to do this, the volume and mass of the block are required.
Mass of the block: 30 grames
Volume of the block:
The volume of the block is not provided, but this can be found using the dimensions given.
V (Volume) = s (side) x s x s
V = 1.5 cm x 4.8 cm x 2.3 cm
V = 16.56 
Density of the block:
To find the density simply divide the mass into the volume
D (density) = M (Mass) ÷ V (Volume)
D = 30 grams ÷ 16.56
D = 1. 811 grams/
The density of the block is 1. 811 grams/
Additionally, the density of the water is 1 gram/ or 1 gram/mL. According to this, the density of the block is higher than the density of the water, and therefore this is the block sinks.
The prefix 'di' means two. Hence two atoms make up a diatomic molecule.
Hope this helps!
Which elements are most reactive?
The alkali metals, found in group 1 of the periodic table (formerly known as group IA), are very reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron in ionic bonding with other elements.
Fluorine is the most reactive
Absorbed photon energy
Ea = hc/λ.. (Planck's equation)
Ea = hc / 92.05^-9m
<span>Energy emitted
Ee = hc/ 1736^-9m </span>
Energy retained ..
∆E = Ea - Ee = hc(1/92.05<span>^-9 - 1/1736^-9) </span>
<span>∆E = (6.625^-34)(3.0^8) (1.028^7)
∆E = 2.04^-18 J </span>
<span>Converting J to eV (1.60^-19 J/eV)
∆E = 2.04^-18 / 1.60^-19
∆E = 12.70 eV </span>
<span>Ground state (n=1) energy for Hydrogen = - 13.60eV </span>
<span>New energy state = (-13.60 + 12.70)eV = -0.85 eV </span>
<span>Energy states for Hydrogen
En = - (13.60 / n²) </span>
n² = -13.60 / -0.85 = 16
n = 4
