All of the following elements are in the same group except...
nitrogen
selenium
<...
Physics, 02.09.2021 17:30 jalenshayewilliams
All of the following elements are in the same group except...
nitrogen
selenium
sulfur
oxygen
Answers: 1
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Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 70 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 66 miles per hour and 74 miles per hour. (assume the data set has a bell-shaped distribution.)
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In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?
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Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?
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The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0Ā°c to 8.0Ā°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and Ī“t is the observed temperature change. if the specific heat of liquid water is 4.19 j/gĀ·Ā°c, how much energy was absorbed by the reaction?
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