N order to prepare a solution for a chemical analysis, 0.275 mol of ammonium sulfide, (NH4)2S(s), is required. What mass of ammonium sulfide must be measured?

Select one:
a. 4.03 g
b. 13.8 g
c. 14.9 g
d. 18.7 g

When a septic tank backs up a goes in to clean it out

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius