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- 1-61 The density of dichloromethane, a liquid insoluble in water, is 1.33 g/cc. If dichioromethane and water are placed in a separatory funnel, which will be the upper layer?Express the answers to the following calculations inscientific notation:(a) 145.75 + (2.3 × 10−1)(b) 79,500 ÷ (2.5 × 102)(c) (7.0 × 10−3 ) − (8.0 × 10−4) (d) (1.0 × 104 ) × (9.9 × 106)Use the meaning of the prefix "nano-" to select the value of "x" in this equation: 1 m = 1 x 10x nm . The value of " x " is (a) +9 (b) -6 (c) +6 (d) -9
- __FeCl3 (aq) + __ KSCN (aq) > __Zn (S) + __HCl (aq) > __Cu (S) + __HCl (aq) > __H2O2 (aq) > __CuSO4 (S) +__H2O (I) > __NaCl (aq) + __KNO3 (aq) > What are the reaction types?A(s)+3B(l)−⇀↽−2C(aq)+D(aq)A(s)+3B(l)↽−−⇀2C(aq)+D(aq) in terms of [A],[A], [B],[B], [C],[C], and [D],[D], as needed. Note that Kc,Kc, which is sometimes symbolized as Keq,Keq, denotes that the equilibrium constant is expressed using molar concentrations. For this question, KcKc means the same thing as Keq.Keq. Kc=Kc=(aq) (aq) NaNO, (aq) + H,0 (I) + 5.
- Dimensional Analysis is a way of doing numerical "book-keeping" when converting quantities or performing calculations. • When converting quantities from one unit to another, conversion factors are used. Solving with Dimensional Analysis and Multiple Units: If I am in Canada where the price of gas is $1.022 USD·L1, how much will it cost me to fill up my gas tank if I travelled 125 km? • Let's also assume that my car gets an average of 30.0 miles/gallon.The three sets of units for expressing density (or concentration, as in “mass of solute per unit volume of solvent”) below are equivalent: kg⁄L = g⁄mL =g cm! ⁄a) Using dimensional analysis, show that the above expression is true.b) What is 1.0 kg⁄L = 1.0 g⁄mL = 1.0 g cm! ⁄ expressed in SI base units?(a) Carbon monoxide (CO) is a poisonous gas because it binds very strongly to the oxygen carrier hemoglobin in blood. A concentration of 8.00 × 102 ppm by volume of carbon monoxide is considered lethal to humans. Calculate the volume in liters occupied by carbon monoxide in a room that measures 17.6 m long, 8.80 m wide, and 2.64 m high at this concentration.(b) Prolonged exposure to mercury (Hg) vapor can cause neurological disorders and respiratory problems. For safe air quality control, the concentration of mercury vapor must be under 0.050 mg/m3 . Convert this number to g/L. (c) The general test for type II diabetes is that the blood sugar (glucose) level should be below 120 mg per deciliter (mg/dL). Convert this number to micrograms per milliliter (μg/mL).
- For the chemical reaction 2HBr(aq)+Ba(OH)2(aq)⟶2H2O(l)+BaBr2(aq)2HBr(aq)+Ba(OH)2(aq)⟶2H2O(l)+BaBr2(aq) write the net ionic equation, including the phases.11-60. Antimony is produced by the cess Cl, (g) and C(s), and 55.0 grams of TiCl,(g) a obtained. Calculate the percentage yield of TiCLig TiO, (s) + 2Cl, (g) + 2 C(s) → TiCl,(g) +2C0 Suppose 50.0 grams of TiO,(s) are reacted with es 11-59. Titanium dioxide is converted to titanium tet- rachloride by reaction with chlorine gas and carbon according to the equation TiO,(s) + 2 Cl2 (g) + 2C(s) – of CULATION ilo- PROBL ms Cl, (g) and C(s), and 55.0 cess ill copp grams with es of TICI (g) se the r 11-6 to F 959A graduated cylinder (measuring cylinder) contains 27 mL of water at 25 °C and the mass of the water is 26.92 g. A sphere of iron with a diameter of 18.0 mm is added to the water in the graduated cylinder. The total mass of the water and the iron is 50.92 g. (The volume of a sphere is given by the expression: V = (4/3)ar³). (i) Calculate the total volume of the water and the iron in the graduated cylinder. (ii) Determine the density of iron at 25 °C? Show your calculations. (iii) Without doing any calculations, what do you think the density of 48.00 g of iron is at the same temperature? Explain your answer.