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My name is Ann [436]
3 years ago
12

Why are some elements more reactive than others?

Chemistry
2 answers:
nlexa [21]3 years ago
8 0
Because of extra electrons
steposvetlana [31]3 years ago
4 0
All other atoms have less stable electron numbers, so they react with each other and share electrons to be more stable. The most reactive elements tend to be short one or two electron or have one or two extra electrons.
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alexdok [17]
Well, even though it may look like the last option is the correct one, that one is wrong. When a crystal s formed from many metals there are many milecular orbitals. So the answer is B. Hope this is what you are looking for
6 0
3 years ago
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How would local residents of a place be affected by changes in the hydrosphere? (please help!!)
lesya692 [45]

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Humans have impacted the hydrosphere drastically and will only continue to due so based on population needs. Global climate change, water pollution, damming of rivers, wetland drainage, reduction in stream flow, and irrigation have all exerted pressure on the hydrosphere's existing freshwater systems.

Hope it helps :)

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3 years ago
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Why do you think there was a rush to mass-produce penicillin around the time of World War II?
Vladimir79 [104]

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3 years ago
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A company is testing drinking water and wants to ensure that ca content is below 155 ppm. What is the maximum amount of Ca that
BabaBlast [244]

Answer:

138 mg

Explanation:

A company is testing drinking water and wants to ensure that Ca content is below 155 ppm (= 155 mg/kg), that is, <em>155 milligrams of calcium per kilogram of drinking water</em>. We need to find the maximum amount of calcium in 890 g of drinking water.

Step 1: Convert the mass of drinking water to kilograms.

We will use the relation 1 kg = 1000 g.

890g \times \frac{1kg}{1000g} =0.890kg

Step 2: Calculate the maximum amount of calcium in 0.890 kg of drinking water

0.890gH_2O \times \frac{155mgCa}{1kgH_2O} = 138mgCa

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3 years ago
What is the total number of moles of solute in 0.7 liters of a 4.4 M solution of NaCl
Leokris [45]

Answer:

answer will be 3.08 mol ig.....

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2 years ago
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