}(c) The reaction between ammonium nitrate and water absorbs heat from the surrounding environment. & Three drops of concentrated sulfuric acid added to 100 milliliters of water in a beaker makes the beaker hot. & Ammonium chloride dissolved in a beaker of water makes the beaker cold. Uranium atoms are split to produce nuclear energy. & Water separates into hydrogen and oxygen when an electric current is run through it. & Methane and oxygen are combined to produce methanol and heat. the Endothermic Reaction & Exothermic Reaction &
Put the acids in order from the strongest to the weakest based on their K_(a) K_(a)=6.8times 10^-4 square K_(a)=2.4times 10^-4 square K_(a)=2.3times 10^-5 square K_(a)=8.7times 10^-6 square
81. What mass of KOH is necessary to prepare 800.0 mL of a so- lution having a pH=11.56 82. Calculate the concentration of an aqueous Sr(OH)_(2) that has pH=10.50
3A. Which of the following happens in a metallic bond? The atoms combine to become one. A B The atoms share electrons. B C ) One atom steals an electron from the other. D The atoms lose their valence shells. D
A particular wine contains 11.2% (v/v) ethanol. What volume of ethanol is in a 750.-mL bottle of this wine? Multiple Choice 84.0 mL ethanol 0.840 mL ethanol 6.70 mL ethanol 14.9 mL ethanol 890 mLethanol
Which pair of compounds will form a solution? Multiple Choice Benzene (C_(6)H_(6)) and hexane (C_(6)H_(14)) Na_(2)SO_(4) and benzene (C_(6)H_(6)) NaCl and hexane (C_(6)H_(14)) H_(2)O and CCl_(4) More than one of the c combinations ons will form solutions.
How many liters of water vapor is produced when 24.7 moles of gaseous ammonia is reacted in the following reaction? No correct answer 553 liters 277 liters 184 liters 1965 liters 1 po
If you cannot read this diagram, use the diagram you made. Question 1: How many grams of solid iron will be produced from 55.5 grams of iron (III) oxide? Fe_(2)O_(3)(s)+3CO(g)Longrightarrow 2Fe(s)+3CO_(2)(g)
Given the neutralization reaction H_(2)SO_(4)+2KOHarrow K_(2)SO_(4)+2HOH Which compound is a salt? H_(2)SO_(4) K_(2)SO_(4) KOH HOH
Why does gel polish help natural nails to grow? Select one: a. It contains essential minerals and nutrients. b. It is hard enough to keep the nails from breaking. c. It moisturizes the nails to make them more supple. d. It strengthens the collagen fibers in the nails.
When you balance the Separate Water simulation how many individual oxygen atoms do you need on the products side to complete the balanced equation? 1 2 3 4
Determine which type of property each statement describes by typing "physical or "chemical" in the blank. Hydrogen is a colorless tasteless, and odorless gas. $\square $ Hydrogen is very combustible in the presence of oxygen. $\square $ Hydrogen is very reactive with most elements. $\square $ Hydrogen is the least dense of all elements. $\square $
Which of the following is an empirical formula? $C_{3}H_{6}$ $C_{3}H_{8}$ CH $C_{2}H_{4}$
Which of the following has the most mass per mole? Oxygen Nitrogen Carbon Potassium
What is the electron configuration for oxygen, O? $1s^{2}2s^{2}2p^{3}$ $1s^{2}2s^{2}2p^{6}3s^{2}$ $1s^{2}2s^{2}2p^{4}$ $1s^{2}2s^{2}2p^{6}3s^{2}$
Gasoline, paints, thinners solvents, natural gas acetylene are all examples of potential: A. Toxic hazards. B. Flammable hazards. C. Combustible hazards. D. All of the above. E. None of the above.
Trans fats and partially hydrogenated oils are the same thing. False True
Is this compound ionic or covalent? $NO_{2}$ ionic covalent
(b) $H_{3}C-CH-CH_{2}-CH_{2}-CH_{3}\\ H_{2}C-CH_{3}$ 2-Ethylpentane Spell out the full name of the compound. The correct name is $\square $
Question 2 (Multiple Choice Worln 2 Points) (05.01 LC) Which of the following groups have seven valence electrons and are very reactive? Column 1 alkali metals Column 2 alkaline earth metals Column 17 halogens Column 18 noble gases
