Multiply across the bottom of the unit conversion. What is the product of the denominator? (24molesC_(2)H_(6)vert 7molesO_(2))/(2molesC_(2)H_(6))=(168)/([?]) Do not round or reduce the answer.

Identify the ion ratios needed to form neutral compounds from the ions below. The metal listed first, and the nonmetal ion (anion) is listed second. Make sure to give each ratio in simplified form. Na^+:Br^-=1:square Al^3+:Cl^-=1:square Mg^2+:O^2-=1:square Al^3+:O^2-=2:square

What is the coefficient of potassium chloride when the following equation is balanced? underline ( )KClO_(3)arrow underline ( )KCl+underline ( )O_(2) A 1 B 2 C 3 D 4

Convert the following measurement. 5.26times 10^8(mol)/(kgcdot m^2)=square (mol)/(gcdot cm^2)

Is LiNO3 soluble or insoluble? Insoluble Soluble

Use the solubility generalizations on the information page to predict if one or more precipitates will form when aqueous solutions of manganese(II) acetate (Mn(COOCH_(3))_(2)) and chromium(II) sulfate (CrSO_(4)) are mixed. Write the formula of any precipitate that could form in one of the boxes. If a box is not needed, leave it blank. If no precipitate is predicted, leave both boxes blank.

Use the References to access important values if needed for this question. The osmolarity of physiological saline solution is 0.300osmol/L. Assuming a membrane that is permeable only to water, what % (w/v) chromium (III) nitrate, Cr(NO_(3))_(3) solution is isotonic to physiological saline? square % (w/v)

The conversion factor for moles of carbon dioxide to mass of carbon dioxide is: 1 mole CO_(2)equiv 44.01g True False

Dalton's law of partial pressure is: P=(nRT)/(V) True False

Toothpaste is an example of a pure substance True False

Hot Questions

$2N_{2}O_{5}(aq)\rightarrow 4NO_{2}(aq)+O_{2}(g)$ Which choice represents the relative rate expression between $N_{2}O_{5}$ and $NO_{2}$ ? 1 $Rate=-\frac {1}{2}\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {1}{4}\frac {\Delta [NO_{2}]}{\Delta t}$ 2. $Rate=\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {\Delta [NO_{2}]}{\Delta t}$ 3 $Rate=-\frac {1}{4}\frac {\Delta [N_{2}O_{5}]}{\Delta t}=\frac {1}{2}\frac {\Delta [NO_{2}]}{\Delta t}$ 4 $Rate=2\frac {\Delta [N_{2}O_{5}]}{\Delta t}=4\frac {\Delta [NO_{2}]}{\Delta t}$

At high temperatures bromine molecules can dissociate into bromine atoms. For the reaction $Br_{2}(g)\rightleftharpoons 2Br\cdot (g)$ $K_{p}=2.48\times 10^{-3}$ at $1650^{\circ }C$ A 5.00 L vessel at $1650^{\circ }C$ is filled with $Br_{2}(g)$ at an initial pressure of 6.00 atm and allowed to come to equilibrium. What will be the pressure (in atm) of $Br\cdot (g)$ at equilibrium?

The boiling point of bromine is $59^{\circ }C$ Which of the following best predicts the boiling point of iodine monochloride, a polar compound? Higher than $59^{\circ }C$ because dipole-dipole interactions in iodine monochloride are stronger than dispersion forces in bromine. Lower than $59^{\circ }C$ because ionic bonding in bromine is stronger than covalent bonding in iodine monochloride. Lower than $59^{\circ }C$ because dipole-dipole interactions in iodine monochloride are weaker than in bromine. Higher than $59^{\circ }C$ because ionic bonding in iodine monochloride is stronger than H-bonding in bromine.

Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of $0.0026M\cdot s^{-1}$ $2NH_{3}(g)\rightarrow N_{2}(g)+3H_{2}(g)$ Suppose a 300. mL flask is charged under these conditions with 450.mmol of ammonia. How much is left 100 s later? You may assume no other reaction is important. Be sure your answer has a unit symbol,if necessary, and round it to the correct number of significant digits. $\square $

Cleaning chemicals are generally not health hazards True False

Identify the molecule or molecules containing polar covalent bonds. HF CsF $Br_{2}$ KH $N_{2}$

A saturated solution holds the maximum amount of solute under the solution conditions. True False

Copper, a good conductor, has __ electron(s) in its valence shell. a. 1 b. 3 c. 4

To identify a chemical's hazards, check its: Smell Color MSDS

A 0.788 mole sample of ideal gas at $12^{\circ }C$ occupies a volume of 4.25 L. What is the pressure of the gas? $\square $