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3 years ago

The substances sodium (Na), oxygen (O2), and sodium oxide (Na20) participate in this chemical reaction

Chemistry

1 answer:

Margaret [11]3 years ago

8 0

Answer:

Explanation:

This is a synthesis or a combination reaction , which involves the oxygen combining with sodium to make one compound.

hope it helps.

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2 years ago

Perform the following mathematical operation and express the results to the correct number of significant figures. (0.102 x 0.08

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1 . All non - zero digits are significant.

2 . The zero between two non- zero are significant.Ex 302 has 3 significant figures.

3. The zero before the decimal and before any non-zero digit is non significant. Example : 0.003 has only 1 significant figure.

4. The zero after non zero are non - significant . But the zeros after the decimal point are significant.

300 has only 1 significant figure

300.0 has 4 significant figure

The least number of significant figures present in the number should be there in the final answer of the calculation.

Look at the number having minimum significant digits :

It is 3 (every number has 3- significant figures ) So the answer should also contain 3 - significant figures.

$\frac{0.102\times 0.0821\times 273}{1.01}$

First solve the numerator part

$\frac{2.285}{1.01}$

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Round off this number to 3 significant figures.

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2 years ago