A certain solid has a volume of 1.86 cm3 and a mass of 17 grams. what is its density

Which of the following statements about subatomic particles best characterizes neutrons? A-positive charge, heavy, found in the nucleus B-no charge, heavy, found in the nucleus C-negative charge, light, circling the nucleus D-positive charge, heavy,

Which of the following chemical formulas shows a covalent compound? A. CO2 B. MgO C. NaCl D. HBr

100mg magnesium reacts with 20ml of 1.0M hcl

Why are hydrogen bonds important for the properties of water?

A bird could be both a consumer and a producer

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?