Chemical services should not be performed on hair that has been colored with any of the following products EXCEPT Select one a. henna b. metallic dyes c. compound dyes d. weekly rinses
2A reaction with ammonium sulfate. molecular equation complete ionic equation net ionic equation
Calculate the molar solubility (mol/L) of PbCrO_(4).K_(sp)=1.8times 10^-14 Type answer: square
Calculate the pH of an acid solution containing 0.044 m HNO_(3) 12.64 2.81 1.36 0.044 none of these
7. Write Lewis structures and determine the molecular geometries for the following molecules: 10 points a) PCl_(5) b) XeF_(2)
Consider the following reaction and the corresponding data: N_(2)(g)+3H_(2)(g)arrow 2NH_(3)(g) S^circ (N_(2))=192J/molK Delta H_(f)^circ (NH_(3))=-46kJ/mol S^circ (H_(2))=121J/molK S^circ (NH_(3))=193J/molK What is Delta G_(rxn) at 298 K?
4NH_(3)+3O_(2)arrow 2N_(2)+6H_(2)O Identify the element that gets reduced. hydrogen nitrogen oxygen Identify the element that gets oxidized. nitrogen oxygen hydrogen
What is the Delta S_(rxn) for the combustion of 1 mole of C(s) based on the reaction below? C(s)+O_(2)(g)arrow CO_(2)(g) Delta S^circ (C)=2J/molK;Delta S^circ (O_(2))=205J/molK;Delta S^circ (CO_(2))=213.74J/molK
How much CO_(2) (L) is produced when 2.10 kg of sodium bicarbonate reacts with excess hydrochloric acid at 25.0^circ C and 1.23 atm? 4.17times 10^1 4.17times 10^-1 4.98times 10^-1 4.98times 10^2 3.50
In general, the oxidation of secondary alcohol will produce __ phenol ketone carbocation carboxylic acid
Write the ground state electron configuration of Zn using the noble -gas shorthand notation. electron configuration: $\square $
Which of the following must be present in a Bronsted-Lowry acid? An OH group A hydrogen atom A chlorine atom A nonbonding electron pair
Which of the following common household items is generally considered to be acidic? Soap Vinegar (acetic acid solution) Baking soda (sodium bicarbonate)
Which is a test for the presence of an aldehyde? Silver's reagent boiling point determination Benedict's reagent a color change at boiling point
One cup of kidney beans contains 15 g of protein, 1g of fat, and 428 of carbohydrate. How many kilocalories, to two significant figures, does this sample contain? (The caloric values are: 4 $kcal/g$ for carbohydrate, $9kcal/g$ for fat, and $4kcal/g$ for protein.) 240 kcal 230 kcal 520 kcal 88 kcal
How many molecule of sugar (sucrose) are there in 5 g (one teaspoon) sugar? Chemical foluma of sugar: $C_{12}H_{22}O_{11}$
For each of the following gemstones determine the mass of compound present in the given moles of each compound. The chemical formula for emeral I is $Be_{3}Al_{2}(SiO_{3})_{6}$ What is the mass in grams of emerald that is in 0.0173 moles?
Which statement is false regarding BPA? is used in resin lining of metal cans is only dangerous in warmer climates affects the brain and prostate development in fetuses, infants and children is found in food storage box and water bottles
The addition of an acid to water increases the $[H_{3}O^{+}]$ of the solution and increases the solution pH. True or False True False
How many moles are there in 3.50 g of ethanol, $CH_{3}CH_{2}OH$ 161 mol 0.00621 mol 13.1 mol 0.0761 mol
