Chemistry

3. Trees, bananas, skateboards and pancakes are all solids. They haveatoms that are closely packed together and don't move around verymuch. Solids also have definite shape, mass and volume. "Definite"means that it doesn't easily change. When you pour cereal into a bowl,the pieces of cereal don't change shape. But when you pour milk into abowl, the milk takes the shape of the bowl. That's because cereal is asolid.AWhich of the following is an example of a solid?A. applesauceCorange juiceB. watermelonD. berry smoothie
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Determine the volume occupied by 2.5 mol of a gas at 18 C if the pressure is 81.8 kPa?
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In an ecosystem1. living things interact with each other2. living things interact with their environment3. both of the above
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If an insufficient amount of liquid unknown had been used, how would this have effected the value of the experimental molar mass
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When is the small size of gas particles taken into account?
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Why were scientists surprised to find coal in the arctic?
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Referencing the reasoning you used from #1, explain the difference between objects that feel hot and those thatfeel "cold".
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Can matter every be destroyed? Why or why not?
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how many grams of cesium fluoride would be required to make 73.1 g of cesium xenon heptaflouride?
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Wax is a nonpolar substance . In which type of substance is it the most soluble ?
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I just need the answer please to both if you can
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2. What are the similarities between law of triads and law of octaves?
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what happens to the ammonia and hydrogen gases generated in common zinc carbon dry cell..?
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Given:CH4 + 2O2 CO2 + 2H2O, H = -890 kJ/molHow much energy is released when 59.7 grams of methane (CH4) reacts with oxygen?The combustion of 59.7 grams of methane releases ____ kilojoules of energy
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234.In the equation:Th 90particle is presented by.X?234Pa + X, which91011.3.-70TH04He2.4.*70
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What slows down heat energy from escaping the Earth?
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Which of the following gases will diffuse the fastest at room temperature?H2NeHeO2
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Which statement best describes liquid water and water vapor at equilibrium?A. Liquid water stops entering the gas phase.O B. The concentration of liquid water equals the concentration ofwater vapor.C. The concentrations of liquid water and water vapor are stable.D. The concentration of liquid water is zero.
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help help help. the answer choices are a. gasb. mirrors c. steamd. photovoltaic cell
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A gas occupies 18.7 L at standard temperature. What is its volume at 200.5 C
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When a chemical reaction releases energy it is called what
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Which statement describes how a basic coffee cup calorimeter works?OOOIt measures the mass of a substance given the specific heat and temperature of water in a cup of known size.It measures the density of a substance given the mass, specific heat, and temperature of water in a cup of known size,It uses the mass and specific heat of water along with a pressure gauge to measure the gain or loss of energy when a substance isadded.It uses the mass and specific heat of water along with a thermometer to measure the gain or loss of energy when a substance isadded.
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Why would the pressure of a sample of gas at a constant volume fall .10 atm?
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Ascorbic acid (H2C6H6O6), also known as Vitamin C, is a polyprotic acid found in fruit, tomatoes, potatoes and leafy vegetables. The pKa's of the ascorbic acid are pKa1 = 4.10 and pKa2 = 11.80 at 25 C. When ascorbic acid is titrated with NaOH and it takes 60.0 mL to remove all protons possible. In the titration curve, how many mL of NaOH are required to reach the first pKa? Another way of asking this is when presented with a titration curve of ascorbic acid where on the x-axis should one look (which volume of NaOH), if one wants to determine the first pKa?
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