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Brut [27]
3 years ago
12

Choose one of the following areas of research and describe how these scientific studies will have an affect on the economy, poli

tics, and society. You can choose from the following: scientists studying the atmosphere, air pollution, and weather patterns; scientists studying renewable energy resources like solar and wind energy; or scientists studying water movement and the hydrologic cycle.
Chemistry
1 answer:
vlabodo [156]3 years ago
8 0
It wont matters what you put just read.

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4. A compact disc has a diameter of 11.8 cm. What is the surface area of the disc in square centimeters? In square meters? [Area
d1i1m1o1n [39]
<span>The surface area is 109.3 square centimeters or 0.01093 square meters. The area formula requires that we use the radius of the disc. We can find the radius by diving the diameter by 2, so radius = 11.8/2 or 5.9 cm. We can use 3.14 as an approximation for π. The surface area is 3.14 * (5.9*5.9). Since the diameter is given in cm, the surface area units are in square centimeters. To convert to meters, divide any measurement in centimeters by 100, but we need to convert to "square" meters, so we need to divide our square centimeters by 100 * 100, or by 10,000. Dividing 109.3 by 10,000 results in 0.01093 square "meters".</span>
8 0
3 years ago
When HBr combines with water, it produces H3O+ and Br- ions. This shows that HBr is a base. true false
ELEN [110]
HBr is a strong acid

False
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kakasveta [241]
I think the answer is transparent and translucent
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3 years ago
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What are atoms? Types of atoms?
shtirl [24]

Answer:

The definition of atom: The Atom is the basic unit of matter.

Types of atoms: There are 3 types of atoms, protons, neutrons, and electrons.

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3 years ago
Ions form when atoms gain or lose protons.<br><br> True or False.
stiv31 [10]

"Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions." -Study.com

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3 years ago
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