Answer:
A.There are many active undersea volcanoes
B.There are long underwater mountain chains
Explanation:
A and D. the answer is a and d
Answer:
Molarity = 1.93 mol.L⁻¹
Explanation:
Molarity is the unit of concentration used to specify the amount of solute in given amount of solution. It is expressed as,
Molarity = Moles / Volume of Solution ----- (1)
Data Given;
Mass = 11.3 g
Volume = 100 mL = 0.10 L
First calculate Moles for given mass as,
Moles = Mass / M.mass
Moles = 11.3 g / 58.44 g.mol⁻¹
Moles = 0.1933 mol
Now, putting value of Moles and Volume in eq. 1,
Molarity = 0.1933 mol ÷ 0.10 L
Molarity = 1.93 mol.L⁻¹
C
2 to 3
2 of al3-
And 3 of s2+
Equals 0
It’s not C.The answer is B.Because as you know,Ionic bonding is the electrostatic forces of attraction between the positive and negative ions.It is a transfer of electrons between the metals(positively charged ions) and non-metals (negatively charged ions)
—->As for this case,iron is a metal and oxygen is a non-metal based on the periodic table.Hence the answer is B.
