Chemistry

Most large mountains are the result of a(n)? RiverVolcano Earthquake Hurricane
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which of the following describes the properties of a substance?A. how it reacts with other chemicals. B. how it behaves. C. all of these. D. how it looks
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Calculate the number of copper atoms in a 63.55 gsample of copper.
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Sally rides her bike to the store to get some Skittles. The store is 5 kmaway. If it takes her 10 minutes to get to the store what is her averagespeed?0.5 km/hr0.5 mph0.5 km/min5 km/min
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An ideal gas in a sealed container has an initial volume of 2.80 L. At constant pressure, it is cooled to 18.00 C, where itsfinal volume is 1.75 L. What was the initial temperature?
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(12) Magnesium metal burns very brightly to produce heat and a white solid.What type of chemical reaction is taking place?An endothermicB exothermicC reductionD thermal decomposition
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What is the ratio of the number of molecules in 1 L of CO2(g) to the number of molecules in 1 L of CH4(g) at the same temperature and pressure? * 2 points 1:1 3:5 1:2 2:4
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Help me pretty please
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A student suggests that the colorless liquid collected in the Utube is water.Describe how to test the colorless liquid to show it contains water.
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USA test prep wave 1 performance task
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ng.3. Connect to Technology How do probes,including landers and rovers, improve ourability to make observations of other planets?s
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The spreading of a mechanical wave into the region behind an obstruction is called --------- what ?
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Look at the wave in the picture. If it has a wavelength of 2 cm, how far apart are points A and B? How do you know?
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Help me pretty please
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PLEASE Answer! Using the periodic table, predict the order of decreasing electronegativity for the elements Al, Ag, Ca, Se, and I.
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4. Write word equations of Magnesium burns in chlorine to form Magnesium Chloride
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Explain why, if soil on a vehicle is in a clump, careshould be taken to keep the clump intact.
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Plate Tectonics Independent Practice,Label The Diagram With The Correct Information.
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Krupton (Kr) is a A. GasB. MetalC. Non of theseD. Metalloid
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A diver takes a balloon with a volume of 2.5Lfrom the surface, where the pressure is 1.0 atm, to a depth of 20m, where the pressure is 3.0 atm. What happen to the volume of the balloon? What if the end of the subnerged balloon is on a long pipe that goes to the surface and is attached to another balloon?
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Help me pretty please
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A single atom is in a balanced electrical state.It has the same number of which pair of particle types?electrons and neutronsprotons and electronsneutrons and isotopesprotons and neutrons
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Determine the enthalpy of neutralization in Joules/mmol for a solution resulting from 19 mL of 1 M NaOH solution and 19 mL of a HCl with the same molarity. If separately, each had a temperature of 28.6 degrees Celsius, and upon addition, the highest temperature reached by the solution was graphically determined to be 37.3 degrees Celsius. Round to the nearest whole number.
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Atoms are the smallest unit of an element that holds the physical identity of that element. T or F
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