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Ganezh [65]
3 years ago
15

What is radium used for

Chemistry
1 answer:
lukranit [14]3 years ago
3 0
To measure something
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sweet [91]

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Explanation:

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5 0
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What is the correct answer?
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How can you obtain hydrogen from a mixture of ethene, hydrogen and ammonia gases?​
irga5000 [103]

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3 0
3 years ago
If you determine the molar heat of neutralization for an acid is 49.1 kJ/mol and the accepted value is found to be 55.2 kJ/mol,
zhenek [66]

Answer: % Errror = 11.05%

Explanation:

Percentage error is the difference between the measured value and the theoretical value as expressed in percent.

That is;

% Error =

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Theoretical value =55.2kJ

Measured value = 49.1kJ

% Error = (55.2-49.1)/(55.2) ×100

%Error = 6.1/55.2 ×100

% Error = 0.1105 ×100

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Therefore the percentage error is 11.05%

5 0
3 years ago
Which represents an endothermic reaction? wood burning in a fire splitting a gas molecule changing frost to water vapor TNT expl
scoundrel [369]

Answer:

changing frost into water vapors.

Explanation:

8 0
3 years ago
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