Chemistry, 29.03.2020 09:13, richardgibson2005
In a stoichiometric calculation to determine the mole of one substance that will react with a given amount, in grams, of a second substance, you need to know
a-both the mole ratio of the unknown substance to the given substance and the molar mass of the known substance.
b-only the molar mass of the given substance.
c-the molar masses of all products and reactants.
Answers: 2
Chemistry, 22.06.2019 09:00, pinapunapula
Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.
Answers: 3
Chemistry, 23.06.2019 04:31, mdarter
Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.
Answers: 2
Chemistry, 23.06.2019 05:00, xxaurorabluexx
Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.
Answers: 2
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