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vitfil [10]
3 years ago
5

Can you identify what object is being represented by the model on the right? A. Arc of a circle B. Amount of radiation C. Area o

f a circle
Chemistry
1 answer:
joja [24]3 years ago
6 0
Answer is:B amount of radiation
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Which metals have similar chemical property’s? Check all that apply.
Rudik [331]

Barium, Beryllium, Radium, and Calcium.

<h3>Explanation</h3>

All four metal elements (Ba, Be, Ra, and Ca) are found in group 2 of a modern periodic table. By periodicity, they have similar chemical properties.

Shared properties likely include:

  • Softness. With only two valence electrons per atom, the four elements form weak metallic bonds. Their pure forms are thus easy to shape and cut.
  • High reactivity. Group 2 "alkaline-earth" metals are only two electrons away from ideal gas electron configurations. They lose electrons more readily than most transition metals such as iron and copper do. Group 2 metals tarnish easily in the earth atmosphere, and reacts readily with water to produce hydrogen and a base- hence the name "alkaline."
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3 years ago
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MAXImum [283]

Answer:

the vapor pressure of this solution would increase if some of the water were allowed to evaporate

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3 years ago
Lead (Pb) is used to make a number of different alloys. What is the mass of lead present in an alloy containing 0.15 mol of lead
Vesna [10]
Lead is 207.2 g/mol.
0.15 mol (\frac{207.2g}{mol}) = 31.08 g Pb
3 0
3 years ago
Why was nutmeg also called the spice of madness
lapo4ka [179]
It was called the “spice of madness” because it had an hallucinogenic property.
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5.0 km into miles (show work)
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Answer:

5 km = 3.107 miles

one Kilometer is equal to 0.621371 meters

so the equation is

5 km times 0.621371 m

is equal to 3.107

7 0
3 years ago
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