Calculate the voltage if the current is 0.5 A and the resistance is 2.0 Ω.

How many neutrons does element X have if tis atomic number is 52 and its mass number is 161? __neutrons

A 75.0 mL 75.0 mL aliquot of a 1.70 M 1.70 M solution is diluted to a total volume of 278 mL. 278 mL. A 139 mL 139 mL portion of that solution is diluted by adding 165 mL 165 mL of water.

Which of these elements is a halogen? magnesium sodium bromine calcium

Which of the following trends is indirectly proportional to effective nuclear charge, Zeff -ionization energy -electron affinity -atomic size -all answers are correct

Chemical equations need to be balanced in order to satisfy the law of a. molecular changes. b. conservation of mass. c. products and reactants.

Which type of wave has a wave perpendicular to the disturbance? Surface Longitudinal Mechanical Tranverse

Caffeine's molecular formula is c8h10n4o2. the molar mass of caffeine is 194g/mol. what is the percentage of carbon in caffeine

Which will evaporate more quickly: 55 mLmL of water in a beaker with a diameter of 4.5 cmcm, or 55 mLmL of water in a dish with a diameter of 12 cmcm?

A 1-cubic-centimeter cube of sodium reacts more rapidly in water at 25°C than does a 1-cubic-centimeter cube of calcium at 25°C.

Calculate the voltage if the current is 0.5 A and the resistance is 2.0 Ω.