a. the mass of earth
Chemistry, 29.01.2020 18:43 modelingavakin
1. scientists can use rock layers to determine which of the following?
a. the mass of earth
b. the size of earth
c. the age of earth
d. the amount of land on earth
2. fossils in layers of rock are generally estimated to be than fossils found in the deeper layers.
a. older, younger
b. newer, younger
c. older, older
d. newer, older
3. new evidence can lead to a change in scientific knowledge
true or false
Answers: 1
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Word equation for k(s) +h2o(l) yield koh (aq) + h2
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Chemistry, 22.06.2019 14:30, joejoefofana
Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀ pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4. 0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
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Chemistry, 22.06.2019 18:00, Jazmineboo7709
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
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1. scientists can use rock layers to determine which of the following?
a. the mass of earth
a. the mass of earth
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