Chemistry

4. The volume of a gas is 27.5 mL at 22^circ C and 0.974 atm. What will the volume be at 15.0^circ C and 0.993 atm? (Hint: Remember to convert temperature to Kelvin using the equation T_((K))=T_((^circ C))+273)

19) Which of the following is a chemical change? A) wood burning in a fireplace B) ice melting to water C) chopping wood for a fire D) sewing a button on a shirt E) pouring water into a glass

v Details View Submission Listen Complete the sentences. Use the drop-down arrows to choose the correct answers. Atoms achieve stability by having electrons fill their square electron shell. This involves reaching a total of square electrons for most elements. middle outer

Question Choose the option below that exemplifies homogeneous equilibria. Select the correct answer below: N_(2)(g)+3H_(2)(g)leftharpoons 2NH_(3)(g) CaCO_(3)(s)leftharpoons CO_(2)(g)+CaO(s) P_(4)(s)+6Cl_(2)(g)leftharpoons 4PCl_(3)(l) H_(2)O(l)leftharpoons H_(2)O(g)

Write the equilibrium constant expression for K_(c) for the following process. 2CO_(2)(g)leftharpoons 2CO(g)+O_(2)(g) K_(c)= square

There are 7.16 mol C and 139 mol H in the sample. Divide by Smallest: Which substance should you divide by? hydrogen carbon don't need to divide

The quantitative proportion of reactants to products in a chemical reaction is known as __ the Law of Conservation of Mass stoichiometry the precipitation coefficient

What is the freezing point, in {}^circ C of a 0.41 m solution of C_(5)H_(4) in benzene? FP_((benzene))=5.50^circ C i=1 K_(f(benzene))=5.12^circ C/m Delta T_(f)=(i)(K_(f))(m) [?]cdot ^circ C

How many moles of HNO_(3) are present in 697 g of HNO_(3) 32 moles 8.4 moles 7.1 moles 14 moles

Determine the amount of heat (in kJ) associated with the production of 1.32times 10^4g of NO_(2) according to the following equation: 2NO(g)+O_(2)(g)arrow 2NO_(2)(g) Delta H=-114.6(kJ)/(mol) Be sure your answer has the correct number of significant digits. square kJ