C2H6 O2 40.0g He 4. An engine coolant is an aqueous solution of ethylene glycol, HOCH2CH2OH, 40.0 % by mass with a 100.0g Soluton density of 1.05 g/mL. Calculate the mole fraction of ethylene glycol in this solution? Assume 1.00 L of solution. mole fraction mol C2HO2 moles (2H602 + mal HeD %3D

A A chemist adds 0.35 L of a 0.132M barium chlorate (Ba( ClO3),) solution to a reaction flask. Calculate the millimoles of barium chlorate the chemist has added to the flask. Round your answer to 2 significant digits. |mmol x10 I Don't Know Submit O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility 80 F 1:0 Cloudy 3/31/2 DELL F8 F10 F11 F12 PrtScr Insert Delete PgUp F1 F2 F3 F4 F5 F6 F7 F9 "R 2# 24 Backspace Lock 4 * 00

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UNIT 8 Part II - Continued (3) (4) Chemical Reactions CHEMICAL EQUATIONS CaCl₂(aq) + CaCl₂(aq) + Na₂CO3(aq) → MgCl₂(aq) - NaCl(aq) + MgCl₂(aq) + Data Sheet CaCO3(s) CaCl₂(aq)

O (±)- (±)- (±)- -OME + (±)- ·}- H H. Il H- F HI H I H → ? LOMe H OMe

A student conducts an experiment. The student prepared 3 beakers which sequentially contained copper metal, zinc metal and 1M sulfuric acid solution. Which of the following statements is true…. A. Copper will dissolve to produce H2 . gas B. When the two metals are connected by a wire, the copper will dissolve C. Zinc metal will dissolve to produce H2 . gas D. Both metals will dissolve

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3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industria strength vinegar, which is 30% concentration. This means that 30% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume o vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the'first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (mL.) vs. Time (s) for Volcano #1 Time Volume of gas (s) produced (ml) 60 E 50 10 20 30 25 8 40 38 46 30 20 Volume of gas produced (ml) 40 50 50 60 52 of 10 53 20 40 60 80 Time (s) Volcano # 2 Volume of gas Volume of gas produced…