Which of the following elements is most metallic?

A. boron

B. carbon

C. nitrogen

D. fluorine

E. sodium

How many moles of n2 reacted if 0.50 mole nh3 is produced

5 The element sulfur is classified as a (1) metal (3) nonmetal (2) metalloid (4) noble gas

A block of ice has edge lengths of 8.00 cm each and a mass of 476 g. What is the density of ice in units of g/cm3?

A copper block (20°C) is placed in contact with a lead block (30°C), which is already in contact with an iron block (70°C).

When energy is added to solid manganese (ii) sulfate heptahydrate crystals they break down to form liquid water and solid manganese (ii) sulfate monohydrate?

ou were instructed to rinse the filter pipettes with methanol and with hexane. Obviously thereason for this is to remove any contaminants that may be present on the glass or cotton.

Calculate the volume of 1 M NaOH needed to prepare 10.0 ml of a 0.10 M solution.

Which best describes why NH4 + can form an ionic bond with CL-?

Select the correct answer from each drop-down menu. Plants use sunlight to convert nutrients into energy. What form of energy transfer is taking place? The energy of the Sun is converted into energy by the plants.

How many minutes would it take a radio wave to travel from venus to earth?