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Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm3). What is the density of talc?
First determine the number of moles of rm Na^+ using the given molarity and volume. Next, use the chemical formula to determine the number of moles of rm Na_3PO_4 needed. Finally, convert moles to grams using the molecular weight of the compound.
what does FU mean in stoichiometry?
Draw the major and minor resonance structure for the carbonate ion (CO3^-2). Include any formal charges, Indicate which are the major resonance structures and why.
What is the molarity of a NaOH solution if 28.2 mL of a 0.112 M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution?
The formula weight of MnSO4 monohydrate is 168.97 g/mol. MUST SHOW WORK!! A) hydrated B) solvated C) saturated D) unsaturated E) supersaturated
What is the concentration of the solution prepared by adding enough water to 4.00 mL of 3.25 M NaOH to make 20.00 mL total?
calculate the number of moles of KOH in 5.50 mL of a 0.360 M KOH solution.What is the pOH of the solution?
what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction?
The gas phase irreversible first-order reaction A----> 3B , is carried out in PFR where the feed is equal molar in A and inerts. the conversion under these circumstances is 50%.
solution of water (K_f}=1.86 C/m) and glucose freezes at - 2.35 C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 C.
Calculate the theoretical yield of iron in the reaction of 254 g of iron (III) oxide with 25.0 g of carbon, according to the equation 2Fe2O3(s) + 3C(s)> 4Fe(s) +3CO2(g)
A 48.1 mL sample of gas in a cylinder equipped with a piston is warmed from 22 degrees C to 90 degrees C. what is the volume at final temperature?
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