Which element is a solid at STP and a good conductor of electricity?

(1) iodine (3) nickel

(2) mercury (4) sulfur

If an atom has an atomic mass of 14 and has 6 protons, how many neutrons does the atom have?

What's 1.16 (6 repeating) in scientific notation?

Mixed sulfur (a yellow solid) with iron filings (a black solid) in a ceramic dish called a crucible. Then he separated them using a magnet. What kind of a change is this?

Which of the following is not a renewable energy a. biomass b. coal c. solar d. water e. wind

Saltpeter is a compound made of potassium (k), nitrogen (n), and oxygen (o). every 100.00 g of saltpeter contains 38.67 g potassium and 13.86 g nitrogen. what is the mass of oxygen contained in 328.0 mg of saltpeter

What type of mixture is 100 ml of water with a little bit of salt?

Which statement explains why meiosis haploid cells rather than diploid cells

Which factors can affect the amount of coco mix that can be dissolved in water? Check all that apply

If 25% of a radioactive element remains after 1,000 years, what is the half-life?

How many valence electrons do the alkaline-earth elements have? a. 1 b. 2 c. 7 d. 8