Chemistry, 13.10.2020 02:01 awesomegrill
Which of the following elements typically attract 1 electron to its valence shell?
Answers: 1
Chemistry, 22.06.2019 07:00
The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?
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Find the number of grams of hcl needed to react completely with .50 moles of magnesium.
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 15:20
Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma
Answers: 1
Which of the following elements typically attract 1 electron to its valence shell?...
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