Which of the following fields does NOT commonly use UV/Vis spectrometry? A Chemistry B Environmental Science C Clinical diagnostics D Astronomy
A gas sample in a Boyle's law apparatus is compressed to a volume of 22.0 mL. If its original volume was 37.0 mL at 12,000Pa what is the new pressure of the gas sample. Show your calculations. 0/10000 Word Limit square .
Name this alkane: CH_(3)-CH_(2)-CH-CH_(2)-CH-CH_(2)-CH_(3) vert vert vert CH_(3) CH_(3) Spell out the full name of the compound. square
Experiment 1: Perform Qualitative Tests for the Group I Cations Part 1: Identify the Pb^2+ Ion 1. Take a clean test tube from the Containers shelf and place it on the workbench. 2. Take 0.2 M lead (II) nitrate from the Materials shelf and add 5 mL to the test tube. 3. Take 12 M hydrochloric acid from the Materials shelf and add 5 mL to the test tube. Is there a precipitate? If so what color is the precipitate? Record your observations Data Table 1. 4. Take a second test tube from the Containers shelf and place it on the workbench. 5. Decant the liquid from the first test tube by moving it onto the empty test tube. Select the Decant option from the window that appears. 6. Discard the second test tube of liquid by emptying it into the waste than placing in the sink.
What is the net ionic equation of the following reaction? LiOH(aq)+HBr(aq)arrow H_(2)O(l)+LiBr(aq) Li^+(aq)+OH^-(aq)+H^+(aq)+Br^-(aq)arrow H_(2)O(l)+LiBr(aq) LiOH(aq)arrow Li^+(aq)+OH^-(aq) Li^+(aq)+Br^-(aq)arrow LiBr(aq) H^+(aq)+OH^-(aq)arrow H_(2)O(l) HBr(aq)arrow H^+(aq)+Br^-(aq)
At equilibrium, a reaction vessel contains 4.50 atm of Br_(2) and 1.10 atm of NBr_(3) According to the reaction: 2NBr_(3)(g)leftharpoons N_(2)(g)+3Br_(2)(g)Kp=4.8 Determine the equilibrium partial pressure of N_(2)
For a particular reaction K=98000 . What can be said about this reaction?
A chemist dissolves 331 mg of pure hydrobromic acid in enough water to make up 270.mL of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits. square
How many moles of ammonia gas equal 1.51times 10^24 molecules NH_(3) 2.51 mol 25.1 mol 0.399 mol 0.251 mol 3.99 mol
What is the molar mass of aspirin, C_(9)H_(8)O_(4) 252.25g/mol 180.17g/mol 244.17g/mol 116.08g/mol 29.02g/mol
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)
