Which of the following compounds is a weak acid? cyclohexanol ethanol phenol acetone ethanal

Which of the following correctly represents the electron affinity of bromine? Br(g)arrow Br^+(g)+e^- Br_(2)(g)+e^-arrow Br^-(g) Br^+(g)+e^-arrow Br(g) Br(g)+e^-arrow Br^-(g)

Select all that apply Which of the following are examples of ways that fluid imbalances with changes in osmolarity can occur? Profuse sweating Volume depletion Volume excess Water intoxication

A 55.3 g sample of brass is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The brass sample starts off at 97.1^circ C and the temperature of the water starts off at 17.0^circ C When the temperature of the water stops changing it's 21.4^circ C The pressure remains constant at 1 atm. Calculate the specific heat capacity of brass according to this experiment. Be sure your answer is rounded to the correct number of significant digits.

7) What distinguishes the atoms of one element from another? A) The number of neutrons B) The number of protons plus neutrons C) The number of protons D) The number of neutrons plus electrons C) The number of protons D) The number of neutrons plus electrons B) The number of protons plus neutrons A) The number of neutrons

4) Which differentiates a compound from a mixture of two or more elements? - A) The elements in a compound may be present in varying proportions - B) A compound does not exhibit the individual properties of the elements of which it is composed - C) A compound is made up of only one element - D) A compound cannot be made up of more than two elements B) A compound does not exhibit the individual properties of the elements of which it is composed A) The elements in a compound may be present in varying proportions C) A compound is made up of only one element D) A compound cannot be made up of more than two elements

Question 7 The bond between a sodium atom and a chloride atom that creates common table salt is what type of bond? A Hydrogen bond B Ionic bond C Covalent bond D Inherent bond

26) Choose the proper coefficients for each substance to balance this equation. underline ( )C_(2)H_(4)(g)+underline ( )O_(2)(g)arrow underline ( )CO_(2)(g)+underline ( )H_(2)O(g) A) 1,1,2,2 B) 1,3,2,2 C) 2,3,4,2 D) 2,2,4,2 B) 1,3,2,2 A) 1,1,2,2 C) 2,3,4,2 D) 2,2,4,2

23) The burning of coal produces sulfur dioxide, SO_(2) a pollutant that slowly reacts in air to form SO_(3) Sulfur trioxide dissolves into airborne water droplets to form a very corrosive solution of sulfuric acid. Which is a product of burning coal that hastens the transformation of sulfur dioxide into sulfur trioxide? A) Carbon dioxide B) Carbon monoxide C) Nitrogen dioxide D) Particles of ash D) Particles of ash C) Nitrogen dioxide B) Carbon monoxide A) Carbon dioxide

18) Which component of the air is an element? A) H_(2)O B) NO_(2) C) O_(2) D) CO_(2) C) O2 D) CO2 B) NO2 A) H2O

Hot Questions

Which of the species below is less basic than acetylide? $CH_{3}MgBr$ $CH_{3}ONa$ $CH_{3}Li$ both A and C all of the above

Choose the conjugate acid for the following base: $N_{2}O_{2}^{2-}$ a. $NO_{2}^{-}$ $HN_{2}O_{2}^{-}$ $H_{2}N_{2}O_{2}$ $HNO_{2}$ $HPO_{4}^{2-}$ b. $H_{2}PO_{4}^{-}$ $H_{2}PO_{4}^{2-}$ $H_{3}PO_{4}$ $H_{3}PO_{4}^{-}$ $B_{4}O_{7}^{2-}$ C. $HB_{4}O_{7}^{2-}$ $HBO_{2}$ $HB_{4}O_{7}^{-}$ $H_{2}B_{4}O_{7}$

The difference between Q and $K_{sp}$ is no differencé. $K_{sp}$ is the value of the product at equilibrium and Q is the value of the product under any condition. Q is the value of the product at equilibrium and $K_{sp}$ is the value of the product under any condition. Q is greater than $K_{sp}$ $K_{sp}$ is greater than Q.

A gas occupies 718 mL at a temperature of $28.36^{\circ }C$ What is the volume of gas at $116.05^{\circ }C$ assuming pressure did not change? Give your answer in L to the hundredths place. Do not put units in the answer space.

Which of the following substances can behave as Lewis bases in an aqueous solution? (Select all that apply) D $CN^{-}$ D $NH_{3}$ $O^{2-}$ $Ag^{+}$ $NH_{4}^{+}$

$CH_{3}-CH_{2}-OH$ Spell out the full name of the compound. $\square $

QUESTION 1 OF 10 When reading a chemical label, it's important to check for what two kinds of hazards? SELECT ALL THAT APPLY health safety storage transportation

3) (4 pts) Give the structures (condensed or line-angle structures) of the isomers of $C_{4}H_{10}$ and name each.

Complete the table to describe the interactions. Interaction Effect on Effect on Species A Species B $\square $ $\square $

Complete and balance the following redox reaction in acidic solution . Be sure to include the proper phases for all species within the reaction. $As(s)\rightarrow H_{2}AsO_{4}^{-}(aq)+AsH_{3}(s)$