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emmainna [20.7K]
2 years ago
8

4. The elements calcium and strontium have similar chemical properties because they both have the same

Chemistry
2 answers:
Zarrin [17]2 years ago
6 0

Answer:

Answer c

Explanation:

The similar properties between calcium, strontium and potassium are : All of them have two electrons in the outermost shell. All are metals. Their oxides are alkaline.

mestny [16]2 years ago
4 0
The answer is C Becuase all of them have have two electrons in the outermost shells which is metal .
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3 years ago
HEY I NEED ALL ANSWERS RIGHT NOW IT'S MISSING AND MY TEACHER ARE GRADING THEM NOW YOU WILL BE MARKED BRAINIEST
emmainna [20.7K]

Molar mass of butane:-

  • 4(12)+10=58u

Moles of Butane:-

  • 100/58=1.7mol

#16

  • 2mols of Butane produce 8mol CO_2
  • 1mol of butane produces 4mol CO_2

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Mass of CO_2:-

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#17

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Mass of O_2

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7 0
2 years ago
Which statement best reflects a change in climate?
zalisa [80]

Answer:

droughts in California have become more common in California

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Climate is weather over time which means that the first and the third one are just isolated incidents and the last answer choice shows climate but it doesn't show a change in climate

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7. Buffalo were moved from Yellowstone National Park because
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Answer:

they had killed other animals

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