Which statement describes a chemical property of iron?

Iron oxidizes.

Iron is a solid at STP.

Iron melts.

Iron is attracted to a magnet.

A microbiologist hypothesized that Staphylococcus aureus is more susceptible to antibiotics than Escherichia coli. She tested her hypothesis by exposing the two species of bacteria to three different antibiotics.

Knowing what you know about the nucleus and the subatomic particles in the nucleus, what do you think is the charge of the nucleus of an atom?

What is the chemical name of the compound K2SO4?

In chemical reactions, are bonds of reactants formed or broken? What about the products, are those formed or broken?

One parent is 6 feet tall and the other parent is 6 feet 4 inches tall. What is the best prediction for the height of the offspring of the two parents? A. The offspring will be about 6 feet tall, but the exact height cannot be predicted. B.

Can magnetism be used to identify a substance

Nitrogen dioxide dimerizes to give dinitrogen tetroxide: 2NO2 (g) → N2O4 (g). At 298 K, 12.55 g of an NO2/N2O4 mixture exerts a pressure of 0.963 atm in a volume of 6.92 L. What are the mole fractions of the two gases in the mixture?

What is the concentration of a solution, in gsolute/100gsolvent, made using 2.83 g of KNO3 in 2.03 g of H2O? Do not include units in your answer.

Why does pressure change in this way? Select all that apply.

Will platinum (pt) metal react with a lead (ii) nitrate solution?