How many grams of sodium contain the same number of atoms as $4.8 g$ of magnesium? (Na = 23, Mg = 24). Give the answer to one decimal place.

Numerical answer type, answer in g, tolerance 0.05.

Answer: 4.6 g

Atoms of Mg

= 4.8/24 = 0.20

mol. Equal atoms means

0.20

mol of Na, mass

= 0.20 \times 23 = 4.6 g

A gas has a density of 2.857 g L^-1 at STP (molar volume 22.4 L mol^-1). Which gas is it? (C = 12, N = 14, O = 16, S = 32, Cl = 35.5) JEE Main level
The mass of a single copper atom (Cu = 63.5) in grams is (use N_A = 6.02x10^23 mol^-1): JEE Main level
The total number of electrons in 1.8 g of water (H = 1, O = 16; use N_A = 6.02x10^23 mol^-1) is: JEE Main level
A gas mixture contains 1.204x10^23 molecules of H2 and 7.1 g of Cl2 (Cl = 35.5). Using N_A = 6.02x10^23 mol^-1 and 22.4 L mol^-1 at STP, fin... JEE Main level
Consider 16 g of O2 and 16 g of O3 (O = 16). Which of the following statements is/are correct? JEE Main level
A gold foil has area 2.0 cm^2 and thickness 1.0x10^-4 cm. The density of gold is 19.7 g cm^-3 (Au = 197, N_A = 6.02x10^23 mol^-1). The numbe... JEE Advanced level