6500 in 2 significant figures

Which statement accurately describes solids?

If 24.6 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 301 Kelvin and 1.01 atmospheres? Show all of the work used to solve this problem. 2 Li (s) + 2 H2O (l) 2 LiOH (aq) + H2 (g)

Which of the following equations can be used to determine the change in enthalpy of a system? ΔHreaction=ΔHproducts*ΔHreactants ΔHreaction=ΔHproducts:ΔHreactants ΔHreaction=ΔHproducts+ΔHreactants ΔHreaction=ΔHproducts-ΔHreactants

Calculate the [oh-] value of each aqueous solution. oven cleaner, with [h3o+]=1.0*10-12m

Instructions:Type the correct answer in each box. Use numerals instead of words. A scientist identifies a particular atom as an atom of chlorine. The scientist also determines that the atom has no net charge.

Which answer choice correctly explains how the structure of ionic compounds differs from covalent compounds? Ionic compounds are made of a network of ions while covalent compounds are made of a network of molecules.

If 3.0 mol of NaOH is dissolved in. 50 L of water, what is the molarity? Select one

How many electrons in an atom can have a quantum number of n = 2?

Which statement comparing chemical and nuclear properties of isotopes is correct? Isotopes have similar chemical and nuclear properties. Isotopes have different chemical and nuclear properties.

Which uses of iron are due to its chemical properties? Select two options. producing colored sparks in fireworks changing from liquid to gas at 2,862°C rusting in the presence of water and oxygen changing from solid to liquid if heated to 1,538°C