Of the following elements, which could be classified as a metalloid (semimetal)? select all that apply.
(a) mg
(b) ti
(c) ge
(d) si
(e) rn
(f) au
(g) bi
(h) at
(i) br
(j) b
(k) eu

Ireally need ! calcium metal reacts with a potassium chloride solution to form calcium chloride and potassium ions. balance this reaction. (s) + (aq) → cacl2(s) + +(aq) a) 1, 2, 1, 2 b) 1, 2, 1, 1 c) 1, 1, 1, 1 d) 2, 1, 2, 1

Which of the following is a property of an acid solution? a. slippery to the touch b. ph less than 7 c. turns red litmus paper blue d. bitter taste

Aballoon is floating around outside your window. the temperature outside is -5 ∘c , and the air pressure is 0.700 atm . your neighbor, who released the balloon, tells you that he filled it with 4.80 moles of gas. what is the volume of gas inside this balloon?