Calculate the percent by mass of the solute in each of the following aqueous solutions: (a) 5.50 g of nabr in 78.2 g of solution, (b) 31.0 g of kcl in 152 g of water, (c) 4.5 g of toluene in 29 g of benzene.
the correct answer is option d, that is low growing.
silene acualis (moss campion) refers to a small mountain wildflower, which thrives at the high arctic and tundra region, and in the higher mountains of north america and eurasia. moss campion is a low, ground-hugging plant. the tundra plants like moss campion exhibit unique adaptations to survive in the extreme conditions. these plants are small with small leaves, and with buds inserted within the foliage for supreme protection.
answer: e. the negative side of each water molecule is attracted to the positive sides of nearby molecules.
explanation: the high melting point, boiling point, and surface tension of water is due to the strong inter molecular forces of attraction present between the water molecules.
the molecules are bonded through hydrogen bonding which arises due to polarity which is developed due to electronegativity difference between hydrogen and oxygen atoms.
oxygen being more electronegative develops negative charge and hydrogen acquires positive charge, which leads to special kind of dipole dipole forces called as hydrogen bonds.
the answer is b, both girls are correct. the ball has elastic potential energy when it bounces, gravitational potential energy when it is in the air, and kinetic energy while it is moving.
osmosis is the movement of water molecules in and out of a cell.