Hich element is likely to be the most brittle?

a. selenium

b. cobalt

c. platinum

d. zinc

Which of the following best explains why electrometallurgy is a useful process in many industries? Electrometallurgy can etch permanent marks and designs into the surfaces of metal products.

If coefficients of a balanced equation are doubled the enthalpy change for reaction is

Write a balanced formation equation at standard conditions for the compound HI.

An 8 N force is applied to a 2 kg object. What is the magnitude of the object's acceleration? A. 0.25 m/s² B. 4 m/s² C. 6 m/s² D. 16 m/s²

Strontium consists of four isotopes with masses and their percent abundance of 84. amu (0.5%), 86 amu (9.9%), 87amu (7.0 %), and 88. amu (82.6 %). Calculate the relative average atomic mass of Sr?

Which of the following correctly compares the radii of Cl and Cl-? Cl has a larger radius than Cl - because Cl has an additional energy shell. Cl has a smaller radius than Cl - because Cl has an expanded electron cloud.

When a stretched string is vibrated up and down with a particular frequency, it causes a standing wave to be produced.

Find the concentration of a solution with 30 grams of solute in 250 grams of solution.

What unit is used to measure cell potential? A. electron Kelvin oxidation number OD. volt

What term is used to describe a testable modle