Hurricanes cause large waves that hit the coast with considerable force. How can these waves negatively impact an ecosystem near the shore?
A.
by causing water sources near the coast to become less salty
B.
by causing significant erosion of the shore
C.
by causing more oxygen and carbon dioxide to dissolve in the water
D.
by causing tides to occur at unusual times
It’s B
A chemical reaction is a spontaneous reaction is determined by the Gibb's energy and enthalpy of the reaction whether it is exothermic or endothermic. The factors that apply here are heat and entropy. Gibb's energy is related to entropy. Answers are D. and E
Answer:
The answer to your question is: letter D.
Explanation:
Noble gases are located in group VIIIA of the periodic table, this means that they have 8 eight electrons in their outermost shell.
Due to this characteristic, they are stable and do not react with other elements.
a. 1s22s22p4 The outermost shell of this electron configuration has 6 electrons, then this element has 6 electrons not 8. This configuration is of an element of the group VIA.
b. [Ne]2s22p2 The outermost shell of this element has 4 electrons, so this is not the configuration of a noble gas.
c. [Ar] 3s1 This element only has one electron in its outermost shell, so this is the electron configuration of an alkaline metal.
d. 1s22s22p6 This element has 8 electrons in its outermost shell, so this is the electron configuration of a noble gas.
Answer:
34 g of water, will be produced
Explanation:
The balanced equation for production of water with oxygen is:
2H₂ (g) + O₂ (g) → 2H₂O (l)
2 mol of hydrgen gas react with 1 mol of oxygen to produce 2 moles of water.
Let's determine the moles of O₂ (mass / molar mass)
30 g / 32g/mol = 0.9375 moles
Ratio is 1:2. So If I have x moles of oxygen I would produce the double of moles of water.
0.9375 moles . 2 = 1.875 moles
Let's convert the moles to mass ( mol . molar mass)
1.875 mol . 18g/mol = 33.75 g ≅ 34 g