If 3.50 moles of sodium hydroxide reacts with excess lead(11) nitrate, how many moles of Pb(OH)2 are produced?
2 NaOH(aq) + Pb(NO3)2(aq) → 2 NaNO3(aq) + Pb(OH)2(s)

Express the following number in scientific notation. 0.026890 =

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2