If a question cannot be tested or observed it cannot be answered by science? True or false?

How many moles of fluorine gas are 3.75 x 10^23 molecules of F2?

In plants, this is period in which a seed or plant does not grow, waiting for the necessary environmental conditions like the right temperature, day length, amount of water, or nutrients.

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How many atoms are there in 43.9g of Na?

When a mixture of 12.0 g of acetylene (c2h2 and 12.0 g of oxygen (o2 is ignited, the resultant combustion reaction produces co2 and h2o?

Consider n2 (g) + 3h2 (g) →→ 2nh3 (g). what is the mass of nitrogen gas required to react with 0.129 g h2?

Write a sentence that uses the words "mass extinction" correctly

Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals

Concerning the 10.0 mL of 0.50 M NaCl diluted to 100 mL of solution: When a solution is diluted, does the dilution change the number of grams dissolved? yes no

What causes element name to change