Answer: A. Decomposition.
Explanation: This is a reaction when a compound breaks down to form two and/or more easier substances. When this reaction turns into a single replacement, only one element is placed there for basically filling in for another element that is in a compound that is similar to the one before. That being said about the substances, this reaction is a big part because it takes away substances, then replaces them with newer and similar ones each time it has completed it's work. It's just a long train of work for Decomposition.
I hope this helps you!
Answer:
The cohesive forces between the water molecules are very strong making the surface tension of water high. As surfactants absorb they break these interactions. The intermolecular forces between surfactant and water molecule are much lower than between two water molecules and thus surface tension will decrease
Explanation:
^^^^
Molar mass arsenic = 74.92 g/mol
1 mole ---------- 74.92 g
? mole ----------- 1.90 g
moles = 1.90 * 1 / 74.92
= 0.02536 moles of arsenic
hope this helps!