Chemistry
Chemistry, 19.07.2019 03:40, perezsamantha3oqr0za

Which metal reacts quickly with cold water only when it is finely powdered? a) calcium b) copper c) sodium s) magnesium

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Biology, 26.07.2019 03:30, veronica022
Which list below best reflects the minerals that aid transmission of nerve impulses and provide for optimal muscle contraction? calcium, sodium, iron, and magnesium iron, copper, selenium, and magnesium sodium, calcium, potassium, and chloride sodium, calcium, potassium, and magnesium?
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Chemistry, 03.08.2019 23:00, essie10
Classify the sentences based on the chemical reactions they describe. synthesis decomposition replacement 1.when a clam shell (caco3) is heated, carbon dioxide (co2) is given off and a white powder, calcium oxide (cao), forms. 2.'nitrogen pentoxide (n2o5) is an unstable gas that changes to nitrogen dioxide (no2) and oxygen (o2) at room temperature. 3.sodium (na) reacts with chlorine (cl) to give sodium chloride (nacl). 4.zinc (zn) metal reacts with copper sulfate (cu2so4) to give zinc sulfate (znso4) and copper (cu). 5.a strip of magnesium (mg) burns brightly in oxygen (o2) to form a white powder, magnesium oxide (mgo). 6.on heating iron ore (fe2o3) with carbon (c), we get iron (fe) and carbon dioxide (co2).
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Biology, 26.08.2019 22:30, madelineb6243
Which list below best reflects the minerals that aid transmission of nerve impulses and provide for optimal muscle contraction? (a) calcium, sodium, iron, and magnesium (b) iron, copper, selenium, and magnesium (c) sodium, calcium, potassium, and chloride (d) sodium, calcium, potassium, and magnesium
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Chemistry, 02.09.2019 20:10, codyshs160
Write a balanced molecular equation describing each of the following chemical reactions: (a)solid calcium carbonate is heated and decomposes to sold calcium oxide and carbon dioxide (b)gaseous butane, c4h10, reacts with diatomic oxygen gas to yield gaseous carbon dioxide and water vapor (c)aaqeous solutions of magnesium chloride and sodium hydroxide react to produce solid magnesium hydroxide and aqueous sodium chloride (d)water vapor reacts with sodium metal to produce solid sodium hydroxide and hydrogen gas
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