Answer:
Seesaw molecular geometry
Trigonal Bipyramidal electron geometry
Explanation:
<u>Answer</u>:
Organisms living near hydro-thermal vents get their energy from Sulphur.
<u>Explanation</u>:
The hot springs found near the Underwater volcanoes at convergent plate boundaries and spreading ridges are called as Hydro-thermal vents . The organisms that live near these hydro-thermal vents are capable of living in very hot water that has a temperature of 65°C to 100°C that would kill most surface organisms.
Also, organisms present at depth of the hydro-thermal vent are adapted to very high and extreme pressure. The water in this vent are very rich in Hydrogen Sulphide .This hydrogen sulphide has very rich amount of energy. Although the is toxic, the bacteria and other living organism are adjusted themselves to make use of the energy in the Hydrogen sulphide.
Answer:
Option D (191 grams) is correct
Explanation:
Step 1: Data given
Atomic mass of Mg = 24.3 g/mol
Atomic mass of Cl = 35.45 g/mol
Atomic mass of O = 16.0 g/mol
Step 2: Calculate molar mass of Mg(ClO3)2
In 1 molecule Mg(ClO3)2 we have 1x Mg, 2x Cl and 6x O
Molar mass Mg(ClO3)2 = atomic mass of Mg + atomic mass of (2*Cl) + atomic mass of (6x O)
Molar mass Mg(ClO3)2 = 24.3 g/mol + 2*35.45 g/mol + 6* 16.0 g/mol
Molar mass Mg(ClO3)2 = 191.2 g/mol
The molar mass of Mg(ClO3)2 is 191 g/mol
This means 1 mol has a mass of 191 grams
Option D (191 grams) is correct
Answer:
Mass = 2.12 g
Explanation:
Given data:
Volume of KMnO₄ = 255 mL (255/1000 = 0.255 L)
Molarity = 0.0525 M
Mass in gram = ?
Solution:
First of all we will calculate the number of moles.
<em>Molarity = number of moles of solute / volume in litter</em>
0.0525 M = number of moles of solute / 0.255 L
Number of moles of solute = 0.0525 M ×0.255 L
Number of moles of solute = 0.0134 mol
Mass in gram:
<em>Number of moles = mass/ molar mass</em>
Mass = moles × molar mass
Mass = 0.0134 mol × 158.04 g/mol
Mass = 2.12 g