An atom of copper (Cu) has a mass number of 63 and an atomic number of 29 How many protons does it have? A. 29 B. 34 C. 63 D. 92
Chemicals that people breathe in to experience some type of high are called __ hallucinogens inhalants anabolic steroids bath salts
What is a type of intermolecular force? covalent ionic dipole-dipole metallic
Formaldehyde ethylbenzene and hydrogen sulfide are all __ chemicals that are used in industrial processes. A. toxic B. corrosive C. irritant D. harmless
Question 13 What is the formula for phosphoric acid? HBr
Balance this equation by typing the correct coefficients in the blanks. square C_(2)H_(5)OH+square O_(2)arrow square CO_(2)+square H_(2)O
Which common food or beverage causes effects that are similar to those of methylxanthine? Bananas Coffee Cough syrup Hot sauce Eucalyptus oil
Select the correct answer. How many moles are in 68.5 liters of oxygen gas at STP? A. 3.058 mol B. 30.58 mol C. 0.3058 mol D. 305.8 mol
3. For the balanced equation shown below, if the reaction of 91.39 grams of C_(3)H_(6) produces a 81.36% yield, how many grams of CO_(2) would be produced? 2C_(3)H_(6)+9O_(2)Longrightarrow 6CO_(2)+6H_(2)O
45 mg is equal to __ grams. 0.45 g 0.0045 g 0.045 g None of the above.
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. $As(s)\rightarrow H_{2}AsO_{4}^{-}(aq)+AsH_{3}(s)$
