Chemistry, 23.06.2019 05:50, starfox5454

Which of the following isotopes has the same number of neutrons as phosphorus-31?

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Chemistry, 22.06.2019 06:00, giusto1894

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

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Chemistry, 22.06.2019 13:00, nauticatyson9

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?

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Chemistry, 22.06.2019 13:20, alejandra340

Can someone me with 3 and 4 plz. this is for masteries test.

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Chemistry, 22.06.2019 14:30, Dreynolds1667

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)