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2 years ago

Why did all sodium compounds show the same colour in the flame? (flame test)

Chemistry

1 answer:

mojhsa [17]2 years ago

5 0

Answer:

Every element has its own particular spectrum of colours that the atoms or ions will emit when energy (in this case heat) is supplied. ... So, the sodium in sodium chloride, sodium nitrate, etc all produce the same bright yellow colour that is a characteristic of sodium.

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I need help with these two

bearhunter [10]

Answer:

6. d, 7. a

Explanation:

6. Molarity is a number of moles solute in 1 L solution.

7. 1 L solution - 2.5 mol K2CO3

20 L - x mol K2CO3

x =20*2.5/1 = 50 mol K2CO3

Molar mass(KCO3) = M(K) + M(C) + 3M(O)= 39 +12 +3*16= 99 g/mol

99 g/mol *50 mol = 4950 g KCO3 Closest answer is A.

Actually KCO3 does not exist, in reality it should be K2CO3.

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3 years ago

Please tell me the answer, I will mark the first person to answer brainlist

Mrrafil [7]

Answer:

option b

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3 years ago

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vladimir1956 [14]

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3 years ago

Which is an example of radiation?

SpyIntel [72]

Answer:

Number 3.

Explanation: The sun produces radiation in the car, which then becomes hot because much radiation is coming in, but little goes out.

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3 years ago

Complete the balanced molecular chemical equation for the reaction below.

Alenkasestr [34]

Answer:

Following are the complete balance of the given equation:

Explanation:

Given equation:

$Cu_2SO_4(aq) + Li_3PO_4(aq)$

$Cu_2So4\ (aq)+Li_3Po_4 \(aq) \longrightarrow Cu_3(Po_4)\ (aq)+Li_2So_4 \ (aq)$

After Balancing the equation:

$3 Cu_2So4\ (aq)+ 2 Li_3Po_4\ (aq) \longrightarrow 2 Cu_3(Po_4)\ (aq)+ 3Li_2So_4 \ (aq)$

In the above equation, when the 3 mol Copper sulfate reacts with 2 mol lithium phosphate , it will produce 2 mol Copper phosphate and 3 mol Lithium sulfate .

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3 years ago