Answer:
Fluorine gas reacts with water.
Answer:
A
Explanation:
0.2g of atom of nitrogen is the one that weigh least cause of.2g is not up to one mole of nitrogen
Change(A chemical reaction.)
Answer:

Explanation:
Hello,
In this case, based on the given, we can infer that as titanium is hot and water cold, it cools down whereas the water is heated up, therefore, in terms of heat, we have that the heat lost by the titanium is gained by the water:

That in terms of mass, specific heat and temperatures is:

In such a way, for computing the mass of titanium, considering the heat capacity of water 4.18 J/g°C, we have:

Regards.
Answer: -
280mg
Explanation: -
The chemical formula is C14H18N2O5
Molar mass of the compound = 12 x 14 + 1 x 18 + 14 x 2 + 16 x 5 = 294 gram
Number of nitrogen atoms present in the formula = 2
Mass of nitrogen present= 14 x 2 = 28 gram
Thus 294 gram of the compound has 28 gram.
Hence 2.95grams of the compound has (28 gram x 2.95 gram / 294 gram)
= 0.28 gram
= 280 mg
Thus 280 mg of nitrogen is present in 2.95 grams of C14H18N2O5