If 588 grams of FeS_(2) is allowed to react with 352 grams of O_(2) according to the following unbalanced equation, how many grams of Fe_(2)O_(3) are produced? FeS_(2)+O_(2)arrow Fe_(2)O_(3)+SO_(2) A 4268 B 3208 C 8808 D 3528 E 1108
Question 2 What is the correct group name for the element Sn? (Reference p.168, Figure 3.38 of your textbook.) A Noble Gases A B ) Carbons C Lanthanides D (D) Actinides 1 P
What is the name of the compound Al_(4)C_(3) Multiple Choice silver carbonate arsenic carbide aluminum carbide argon carbonate
A P-P linkage would be classified as what type of bonding interaction? polar covalent nonpolar covalent metallic homogeneous ionic
Personal Protective Equipment (PPE) in a laboratory setting may include (select ALL that apply): A A lab coat B Goggles C Open toe shoes D Gloves
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)
Chemical reactions that build large products from smaller reactants are generally __ catabolic hydrolysis decomposition endergonic
Ammonia can be produced from syngas. True False
The conversion factor for moles of carbon dioxide to mass of carbon dioxide is: 1 mole $CO_{2}\equiv 44.01g$ True False
How does a surfactant act as a chemical agent? A It denatures nucleic acids (DNA/RNA) B It denatures proteins. C It dissolves lipids in the membrane. D It inhibits energy production.
What is the coefficient of potassium chloride when the following equation is balanced? $\underline {\quad }KClO_{3}\rightarrow \underline {\quad }KCl+\underline {\quad }O_{2}$ A 1 B 2 C 3 D 4
Use the solubility generalizations on the information page to predict if one or more precipitates will form when aqueous solutions of manganese(II) acetate $(Mn(COOCH_{3})_{2})$ and chromium(II) sulfate $(CrSO_{4})$ are mixed. Write the formula of any precipitate that could form in one of the boxes. If a box is not needed, leave it blank. If no precipitate is predicted, leave both boxes blank.
9. How much heat will be transferred when 14.9 g of ammonia reacts with excess oxygen according to the following equation? Circle one: Is this reaction endothermic or exothermic? Additionally, rewrite the thermochemical equation in the other format. $4NH_{3}+5O_{2}\rightarrow 4NO+6H_{2}O$ $\Delta H=-1170kJ$
Multiple Choice 1 point After drawing the Lewis structure for nitrogen gas how many triple bonds are present? 1 2 3 None
Use the References to access important values if needed for this question. The osmolarity of physiological saline solution is $0.300osmol/L.$ Assuming a membrane that is permeable only to water, what $\% (w/v)$ chromium $(III)$ nitrate, $Cr(NO_{3})_{3}$ solution is isotonic to physiological saline? $\square \% (w/v)$
Identify the ion ratios needed to form neutral compounds from the ions below. The metal listed first, and the nonmetal ion (anion) is listed second. Make sure to give each ratio in simplified form. $Na^{+}:Br^{-}=1:\square $ $Al^{3+}:Cl^{-}=1:\square $ $Mg^{2+}:O^{2-}=1:\square $ $Al^{3+}:O^{2-}=2:\square $
