Liquid gold is poured into molds and cools to become solid bars. The gold is . Liquid nitrogen becomes a gas when it is poured out of its container. The nitrogen is . Solid iron is heated to high temperatures so that it becomes a liquid. The iron is . Water vapor in the air becomes tiny liquid droplets that form fog. The water is . In a very cold cryogenic freezer, solid oxygen forms on the walls from the oxygen gas in the air. The oxygen is . In the high desert, snow changes to water vapor without becoming liquid water. The snow is
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Chemistry, 22.06.2019 10:30
Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.
Answers: 1
Chemistry, 22.06.2019 16:30
How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4
Answers: 3
Chemistry, 22.06.2019 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
Chemistry, 22.06.2019 19:40
What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles
Answers: 2
Liquid gold is poured into molds and cools to become solid bars. The gold is . Liquid nitrogen becom...
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