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Determine the final temperature of sample with a specific heat of 1.1 J/gC and a mass of 385 g if it starts out at a temperature of 19.5C and 885 J of energy are added to it.
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show work!!A sample is 54.7g CaCl2 and 53.64 g H20. Howmany water molecules are associated with thishydrate?
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4.Find the area of a rectangle whose length and width are9.025 x 106 m and 5.215 x 10 m respectively.-8
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A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters
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any help welcome on this, chem balancing equations btw !
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What is the function of the chloroplast? A. Breaks down sugar to make energy B. To hold the cell together C. To make animals green D. Uses sunlight to create glucose (sugar)
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the electrolyte in automobile lead storage batteries is a 3.75 sulfuric acid solution that has density of 1.230g/mL. calculate the mole fraction.
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Which statement best describes the relationship between photosynthesis and cellular respiration?Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.Photosynthesis is part of the carbon cycle, and cellular respiration is not.Only plants perform photosynthesis, and only animals perform cellular respiration.Photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.
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Which of the following reactions is irreversible? A. Zinc (Zn) reacting with hydrochloric acid (HCl) B. Haber Process C. Dehydrating copper sulfate (CuSO4) D. Thermal decomposition of NH4ClPLEASE HELP
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Substance X has a specific heat capacity that is twice as large as Substance Y. If both samples ended up at the same change in temperature from the same amount of energy added, what is the relationship between the masses of the two samples? Explain.
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how many molecules are in 0.89 of silver
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Are most snakes venomous or nonvenomous?
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A sample of a certain organic acid has a mass of 5.000 g. Elemental analysis of this compound found it to contain 1.334 g C, 3.554 g O, and the rest of the mass is hydrogen. If the molar mass of the organic acid is 90.03 g/mol, determine its molecular formula.
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The statement that "Newton knew what gravity did but he could not explain why gravity did it is the basic difference between? A. A scientific law and a scientific theoryB. A scientific theory and a societal law C. A scientific law and societal lawD. A hypothesis and scientific law
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Some students believe that teachers are full of hot air. If I inhale 2.1 liters of gas at a temperature of 200 C and it heats to a temperature of 370 C in my lungs, what is the new volume of the gas?
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Which of the following BEST describes how these elements would be classified? A. Element Q is a nonmetal and element R is a nonmetal. B. Element Q is a metal and element R is a metalloid. C. Element Q is a nonmetal and element R is a noble gas. D. Element Q is a metal and element R is a noble gas.
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Describe two differences between transition elements and alkali metals?
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Which pair best represents a metallic bond?A. carbon and oxygen two B. hydrogen atoms two C. gold atoms D. sodium and chlorine
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A very loud sound has a high _____.resting pointamplitudewavelengthbass
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why does mass of popcorn stay the same after popping it
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What is the equation to find volume? 1. mx+b2. wxh3. bxh/24. LxWxH
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Do you think crystals formed in conditions that were stable or did they change often?
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if a molecular formula is C8H12O2, what is the empirical formula
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3. A sample of neon gas has a volume of 1.2 L at 28.5C. What will the volume be at 125C it thepressure remains constant?
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