Chemistry

A gas occupies 718 mL at a temperature of 28.36^circ C What is the volume of gas at 116.05^circ C assuming pressure did not change? Give your answer in L to the hundredths place. Do not put units in the answer space.

Which of the following substances can behave as Lewis bases in an aqueous solution? (Select all that apply) D CN^- D NH_(3) O^2- Ag^+ NH_(4)^+

Which of the following are conjugate acid -base pairs? 1. CO and H_(2)CO 2. HClO_(4) and ClO_(3)^- 3. H_(2)CO_(2) and HCO_(2)^- (Select all that apply) 1 3

1. Select the true statement about mole. The unit of mole is mol. Mole is used to express the amount of a substance. 1 mole is 6.022times 10^23 units of anything. All of the above.

C_(5)H_(12)(l)+8O_(2)(g)arrow 5CO_(2)(g)+6H_(2)O(g) Express your answers as integers separated by commas. N_(C), N_(H), N_(O)=square atoms

A closed vessel at 25^circ C and constant pressure contains the reversible reaction N_(2)O_(4)(g)leftharpoons 2NO_(2)(g) After sufficient time, the mixture reaches equilibrium. A reference standard thermodynamic quantities table is accessible using the button below or by clicking here. What is the value of Delta S_(rxn) for the system at this equilibrium state?

What classes can a pure substance be divided into? (Reference p 17 of your textbook.) A Elements and compounds B Electrons and protons C Elements and electrons D Neutrons and protons

When a sample contains a flammable or explosive compound , what special preventive measure may be necessary? Using a special chilled canister to collect the sample Electrically grounding the sample container to prevent a spark Wearing static-free clothing Using a nonmetallic sample container

Using the thermodynamic information in the ALEKS Data tab, calculate e the standard reaction entropy of the following chemical reaction: 2H_(2)(g)+O_(2)(g)arrow 2H_(2)O(g) Round your answer to zero decimal places. prod (J)/(K)

The total number of valence electrons in a molecule of SO_(4)^2- is 32 26 35 25