Element C and D are classified under the same group in the Periodic Table. Element C is a white solid and burns in Oxygen. Do you Think element D will burn in Oxygen? Give a reason for your answer.

Elements belonging to the same group in the periodic table exhibit similar chemical reactions.

Explanation:

Elements are arranged according to their periodic properties in the periodic table. The periodic table is actually an arrangement of elements based on increasing atomic numbers.

Elements that have the same number of electrons in their outermost shells are arranged in the same group in the periodic table. Since the chemical reactivity of elements depends on the number of electrons in their outermost shells, elements in the same group in the periodic table will exhibit similar chemical reactions.

Hence if elements C and D belong to the same group in the periodic table and element C burns in oxygen, it is expected that element D will also burn in oxygen.

The molarity of morphine is 2.45 * 10^-9 M

Explanation:

Step 1: Data given

Molecular formula of morphine = C17H19NO3

Atomic mass of C = 12.01 g/mol

Atomic mass of H = 1.01 g/mol

Atomic mass of O = 16.0 g/mol

Atomic mass of N = 14.0 g/mol

a relative color intensity of 15 corresponds to a morphine concentration of 0.7 ng/mL

Step 2: Calculate molar mass of morphine

Molar mass = 17 * 12.01 + 19*1.01 + 14.0 + 3*16.0

Molar mass morphine = 285.36 g/mol

Step 3: Calculate the molarity of morphine

Molarity = 0.7 ng/mL * (1g / 10^9 ng ) / (285.36 g/mol) * (1000 mL)

Molarity = 2.45 * 10^-9 M

The molarity of morphine is 2.45 * 10^-9 M