Chemistry, 20.08.2019 14:30 kelbruggie
Which statement describes the relative energy of the electrons in the shells of a calcium atom?
(1) an electron in the first shell has more energy than an electron in the second shell.
(2) an electron in the first shell has the same amount of energy as an electron in the second shell.
(3) an electron in the third shell has more energy than an electron in the second shell.
(4) an electron in the third shell has less energy than an electron in the second shell.
Answers: 1
Chemistry, 21.06.2019 20:30
This chart represents the melting point of several substance. what besy explains the high melting point of the salt?
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Chemistry, 22.06.2019 01:00
Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.
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Chemistry, 22.06.2019 18:30
When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
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Chemistry, 23.06.2019 01:30
Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.
Answers: 1
Which statement describes the relative energy of the electrons in the shells of a calcium atom?
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