He was credited with discovering the subatomic particle also known as the electron in 1897.
For this system, we use Dalton's law of partial pressures where the total pressure of a gas mixture is said to be equal to the sum of the partial pressures of the gases. The partial pressure of each gas would be calculated by the product of the mole fraction and the original pressure of the gas. We do as follows:
Total pressure = x1P1 + x2P2
Total pressure = (2.0 / 7.0 )(3.5) + (1.5/7.0)(2.6)
Total pressure = 1.56 atm
Answer:
Substance 4
Explanation:
Density is defined as mass per unit volume. A substance floats in another when its density is less than that of the substance on which it floats.
If an object is immersed in a denser liquid, it will sink
Since the density of water is 1 g/cm^3, any substance whose density is less than that of water will float in it.
If we look at the table, substance 4 has a density of 0.5g/cm^3. Hence, substance 4 is expected to float in water.
Explanation:
(a) Dry ice is solid carbon dioxide and its chemical formula is solid
.
(b) Sodium chloride is commonly known as salt in daily life. Hence, chemical formula of salt is NaCl.
(c) Laughing gas is also known as dinitrogen monoxide. Hence, its chemical formula is
.
(d) Marble (chalk limestone) is chemically known as calcium carbonate. Hence, its chemical formula is
.
(e) Baking soda is chemically known as sodium bicarbonate. Hence, its chemical formula is
.
(f) Ammonia has a chemical formula as
.
(g) Water has a chemical formula as
.
(h) Milk of magnesia is a base and it is chemically known as magnesium hydroxide. Its chemical formula is
.
(i) Epsom salt is most often found as heptahydrate of sulfate mineral epsomite. Its chemical formula is usually
. If not present as a heptahydrate then its chemical formula is
where, value of x can be equal to 0 to 7.