Trihydrate - basically 3 molecules of water. Unless you're referring to the molecule 3H2O used in measuring the total body water in the case it tritiated water.

8 0

3 years ago

Sulfur dioxide is a main component of: photochemical smog, thermal inversion, industrial smog.

DedPeter [7]

The correct answer is industrial smog. This type of smog exists in coal power plants which creates smoke and sulfur dioxide which may mix with fog creating a thick blanket of haze. Sulfur dioxide is one primary component of an industrial smog.

3 0

3 years ago

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For the reaction of 2Na2O, if you have 18.0 g of Na, how many grams of O2 are needed for reaction?

geniusboy [140]

Answer: -

6.26 grams

Explanation: -

Atomic Mass of sodium Na = 23 gram

Mass of Na = 18 g

Atomic mass of oxygen O = 16 gram

Molar mass of O2 = 16 x 2 = 32 gram

The balanced chemical equation for the reaction is

4 Na + O2 -- > 2 Na 2 O

From the balanced chemical equation, we see

4 Na requires 1 O2

4 x 23 gram of Na requires 32 gram of O2

18 g of Na gives $\frac{32 g O 2 x 18 g Na}{4 x 23 gram Na}$

= 6.26 grams of O2

For the reaction of formation of Na2O, for 18.0 g of Na, 6.26 grams of O2 are needed for reaction.

8 0

3 years ago