Answer:
2.25 M <========= I do not see this in your selection of answers !
Explanation:
Mole weight of Li F
( from periodic table ) = 6.94 + 18.998 = 25.938 gm/mole
56 gm / ( 25.938 gm /mole) = 2.15899 moles
2.15899 mole / (.959) L = 2.25 M
Answer:
A pH test strip kit is not used to examine an object's physical properties
Explanation:
Each and every object or element in the periodic table exhibits its own physical and chemical properties. The physical properties of an object are those which can be seen through naked eyes or which changes with respect to temperature, pressure and mass or amount of the object. While chemical properties are related to the composition of object and changes in the composition. So in the given options like measuring spoon, microscope and scratching tool, all these are used to examine physical properties like quantity, morphology or shape and hardness of the object. But the third option of usage of pH test strip is used for measuring chemical changes and mostly the acid and base nature of object. So pH test strip kit would not be used to examine an object's physical properties.
Answer:
C is the answer.
Explanation:
A solvent is a substance that becomes a solution by dissolving a solid, liquid, or gaseous solute. A solvent is usually a liquid, but can also be a solid or gas. The most common solvent in everyday life is water. Most other commonly-used solvents are organic (carbon-containing) chemicals.