Which statements describe properties that are unique to metalloids?

Metalloids are shiny.

Metalloids are semiconductive.

Metalloids are solid.

Metalloids are amphoteric.

Metalloids are brittle

An atom of gold has a mass of 3.271 x 10^-22g. how many atoms of gold are in 5.00g of gold?

One beneficial use of radioisotopes is (1) detection of disease (2) neutralization of an acid spill (3) decreasing the dissolved O2 (g) level in seawater (4) increasing the concentration of CO2 (g) in the atmosphere

Which set of coefficients would balance the following chemical equation? H3PO4 + RbOH → H2O + Rb3PO4

The harmonic law would suggest that Neptune will take how much time to orbit the Sun than Mercury?

Nitrogen gas plus hydrogen gas under pressure and at high temperature turns into ammonia. which of the chemical equations matches the reaction above?

plate a and plate b are both continental plates. what is ghe most likely result if the two plates collide?

According to the second law of thermodynamics, the entropy of any system always increases. According to the second law of thermodynamics, the entropy of any system always increases. True False

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?

Which organism would least likely be selectively bred A) Dandelions B) Nantes Carrots C) Belgian Blue Cattle D) Hypoallergenic Cats