Convert 8.541 g into mg. Round to the correct number of significant figures. square
Chemicals classified as either vasodilators or vasoconstrictors are square chemicals.
How is an exothermic reaction equation written? Reactant(s)+heatarrow product(s) Delta H=Hfinal-Hinitial Reactant(s)arrow product(s)+energy(leeat,light,electricity, or sound) PE=mgh
Which of the following pairs of reactant molecules can react in the presence of a trace of acid to give a hemiacetal molecule? Group of answer choices two ketones two aldehydes an aldehyde and an alcohol an aldehyde and an alkene a ketone and an aldehyde
Question 8 of 10 In which Group do most of the elements have 8 valence electrons? A. Transition metals B. Halogens C. Noble gases D. Alkaline earth metals
What does the Law of Conservation of Mass state? Matter cannot be created or destroyed, it can only change its form. Matter can be created and destroyed. Matter can increase over time.
Which metalloid has three valence electrons? boron arsenic silicon -lithium
2s and 2p orbitals Check all that apply. They are in the same energy level. They have the same maximum number of electrons. They have the same shape. None of these statements are true.
What is the recorded Wolf Number for the year 1900 from the table provided to you in the lab handout? The Wolf Number for that year is 5. The Wolf Number for that year is 25. The Wolf Number for that year is 105. The Wolf Number for that year is 10.
The two different compounds [Cu(NH_(3))_(4)][Fe(CN)_(4)(H_(2)O)_(2)] and [Cu(CN)_(4)] [Fe(NH_(3))_(4)(H_(2)O)_(2)] are examples of: optical isomers linkage isomers coordination isomers ionization isomers geometric isomers
E What is the total atmospheric pressure if the partial pressures of $N_{2},O_{2}$ , and Ar are 6045 mm Hg. 162.8 mm Hg , 0.5 mm Hg. respectively?
What are the isotopes of lodine used for? Prevent tooth decay Plants and Agriculture Cancer Treatments Bone healing
There are more than 500 chemicals in marijuana, but about 100 of them are unique to the Cannabis plant, these are called cannabinoids. THIQs. opioids. butyrates.
d. What is the volume of 03620 mol He at STP?
Please answer in complete sentences: 5. What is the meniscus of a liquid and how does a scientist use the meniscus? __
Identify the correct chemical equation when copper(II) sulfate reacts with zinc to form zinc sulfate and copper? $CuSO_{4}+Zn\rightarrow Cu+Zn$ $CuSO_{4}+Zn\rightarrow ZnSO_{4}+Zn$ $CuSO_{4}+Zn\rightarrow CuSO_{4}+Zn$ $CuSO_{4}+Zn\rightarrow ZnSO_{4}+Cu$
Which of the following species can be Bronsted -Lowry acids? Check all that apply. $SO_{4}^{2-}$ D $I_{2}$ $Cl^{-}$ $H_{2}SO_{4}$ None of the above
What mass of carbon (in g) is present in $8.02\times 10^{23}$ formula units of $Al_{2}(CO_{3})_{3}$ $\square $
Which of the following is a common property of acids? Corrosive Conducts electricity All of these Sour taste
3. ¿Cuál es la masa molar de $K_{2}SO_{4}$ (2 puntos)
