10) Select 2 that apply. How does carbon dissolve into water? carbonic acids solid carbon charcoal gaseous carbon dioxide diamond form
True or False: Both elements and compounds are found on the periodic table. True False
4. Explain what happens to each of the following as the atomic masses of the elements in the periodic table increase: a. the number of protons __ b. the number of electrons __ c. the number of atoms in 1 mol of each element
A reaction between an acid and a base forms what products? Water Salt Salt and Water A covalent compound
What is the most stable ion formed by phosphorous? -1 +3 -3 -2
4. Explain why the lattice energy-the amount of energy necessary to break apart the lattice-of MgCl_(2) is greater than the lattice energy of NaCl. Coulomb's low which you may use in your answer, is F_(c)=k(q_(1)q_(2))/(r^2)
A Pure substance is made of one type of particles. Is B2 a pure substance? Explain Escriba su respuesta
What is the subunit of a polymer?
Which of the following is a heterogeneous mixture? Table Salt Oil and vinegar salad dressing Table sugar Baking soda
A student attempts to draw the electron configuration of an atom that has 7 electrons using orbital notation. Is the diagram correct or incorrect? square Which rule is violated? square
Given the following reactions and corresponding $\Delta H$ values, find the $\Delta H$ (to the nearest whole \#) for the reaction: $H_{2}SO_{4}(l)\rightarrow SO_{3}(g)+H_{2}O(g)$ $H_{2}S(g)+2O_{2}(g)\rightarrow H_{2}SO_{4}(l)$ $\Delta H=-235kJ$ $H_{2}S(g)+2O_{2}(g)\rightarrow SO_{3}(g)+H_{2}O(l)$ $\Delta H=-207kJ$ $H_{2}O(l)\rightarrow H_{2}O(g)$ $\Delta H=44kJ$ $\square $
Convert $4.68\times 10^{25}$ atoms $PBr_{3}$ to mol
Which of the following best describes a mixture? a material that is made up of many molecules a substance that can be changed into another substance a material that contains two or more substances a substance that has been broken down into Its smallest parts
What is used to of a hope of sixes in a a compound heard on the chermal reme? the periodic table prefixes chemical symbols the IUP AC
40. Using the hyphen form of symbol writing write the name of this atom. ${}_{9}^{19}F^{-1}$
Which of the following will not increase 1 point the rate of a chemical reaction? increasing surface area stirring decreasing the temperature increasing the concentration A __ is a substance that increases the rate of a reaction without being consumed. __ 1 point A(n) __ slows down the rate of a reaction. __ is a substance that 1 point
Use molecular orbital theory to determine the bond order in $H_{2}$ o 2 1 3
What partie should be used for the caygin akan when maning the characal formuls $SO_{2}?$ $\square $ disappointed mono- pent.
What happens to the pH of a buffer solution if it is diluted by adding more water? A) pH increases B) pH decreases C) pH remains the same D) pH becomes 7 E) It depends on the starting volume of the buffer
What is the chemical formula for lead (II)sulfate? $Pb_{3}(SO_{4})_{2}$ $PbSO_{4}$ $Pb_{3}(SO_{3})_{2}$ $PbSO_{3}$
