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musickatia [10]
2 years ago
11

True or False - Elemental gases are relatively insoluble in water and should be given the state (g).

Chemistry
1 answer:
neonofarm [45]2 years ago
3 0

Answer:

True

Explanation:

I assume this is refering to gases such as O2, H2, I2, F2, ect. And possibly the nobel gases which are completly insoluable. As gases they should be given the state (g).

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Explanation:

This is the answer

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The diagram below shows different layers of sedimentary rocks.
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D. layer B is younger than layer G.
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What is the symbol of the ion with 36 electrons and a +2 charge?
AlladinOne [14]

Answer:

Strontium

Explanation:

The atomic number of strontium is 38.

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Strontium loses its two electrons and form cation with +2 charge.

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Sr₃₈ = [Kr] 5s²

The valance electrons present in 5s are lost by strontium atom and form Sr⁺² cation.

it is yellowish-white metal.

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It form salt with halogens.e.g

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IT react with oxygen and form oxide.

2Sr   +   O₂   →    2SrO

this oxide form hydroxide when react with water,

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With nitrogen it produced nitride,

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With acid like HCl,

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3 0
3 years ago
How many moles are in 213 mg of calcium fluoride, CaF2?
lana [24]

Answer:

2.73

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2.72815277835894

i used an online converter lol it is much faster. if you'd like a step by step guide comment and ill give you one :)

7 0
2 years ago
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Students asked to measure the temperature of a reaction beaker recorded the following temperatures. 103.7°C, 108.4°C, 105.8°C, 1
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There are two terms

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So 104.6 is accurate

b) Precision : This is related to the closeness of different readings with each other

The first reading is 103.7 and the second one is 108.4  so the second reading is quite different from the first reading so it cannot be called as precised

Again 105.8 has good difference from the second reading hence again this is not precised

However the last reading 104.6 is quite near to 105.8 so 104.6 can be called as precise


6 0
3 years ago
Read 2 more answers
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