Answer:
98.08 g/mol
Explanation:
In order to find the molar mass of a substance, you add together the mass of the total number of moles of each element in the substance.
H2SO4 contains:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Para encontrar la masa molar de una sustancia, suma la masa del número total de moles de cada elemento de la sustancia.
H2SO4 contiene:
2 mol H (1.01 g/mol)
1 mol S (32.06 g/mol)
4 mol O (16.00 g/mol)
2(1.01) + 32.06 + 4(16.00) = 98.09 g/mol
Answer:
m H2O = 56 g
Explanation:
∴ The heat ceded (-) by the Aluminum part is equal to the heat received (+) by the water:
⇒ - (mCΔT)Al = (mCΔT)H2O
∴ m Al = 25.0 g
∴ Mw Al = 26.981 g/mol
⇒ n Al = (25.0g)×(mol/26.981gAl) = 0.927 mol Al
⇒ Q Al = - (0.927 mol)(24.03 J/mol°C)(26.8 - 86.4)°C
⇒ Q Al = 1327.64 J
∴ mH2O = Q Al / ( C×ΔT) = 1327.64 J / (4.18 J/g.°C)(26.8 - 21.1)°C
⇒ mH2O = 55.722 g ≅ 56 g
Answer:
3)They increase precipitation on the windward sides of mountain ranges
4)They force cool, moist air from oceans to rise as they move toward land
5)They decrease precipitation totals on the leeward sides of mountain ranges.
Explanation:
During the day, as the ocean becomes heated up, there is always an increase in humidity of the air that is above the oceans in coastal areas. But Because of the higher heat capacity of water compare to the land,the ocean always remain cooler compare to the land. But because of lower density,the air on the land is replaced by the ocean's cool air as the land's air increases.
Whenever a mountain inland come in contact with cool
air with humidity,the sir get more cool. However,. there result a condensation and precipitation of the water that is present in the air at the part of the mountain.
When an electrons moves from an excited state to the ground state, it would release energy. An electron in the excited state would mean that it contains high kinetic energy so to move to a lower state some of these energy should be released.
A scientific law is a statement based on repeated observation. It will always be true under a certain set of circumstances.
A scientific theory is well supported (by evidence) explanation for an occurrence in the natural world.
A scientific law does not need to include an equation.
Therefore, the correct answer is B.