Answer:
B. They all have the same properties.
Explanation:
For example....they contain nucleus in their center.
El Nino refers to the phenomenon where the East Pacific Ocean is anomalously warm. This condition produces wet weather to the western countries of south America. Under normal conditions these areas are dry. El Nino also decreases rainfall and hurricane activity in the Atlantic and Caribbean region. Severe droughts will persist when this occurs. La Nina occurs when the temperature of the pacific is cooler than normal. When is occurs The Caribben and Atlantic experiences higher than normal rainfall and the South american coast is drier.
Answer:
In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal
Explanation:
Molarity is defined as the number of moles of solute in 1 L of solution
number of NaOH moles present - 0.20 mol
volume of solution - 150 mL
since molarity is taken as number moles of solute in 1000 mL
if 150 mL contains - 0.20 mol
then 1000 mL should contain - 0.20 / 150 x 1000 = 1.33 mol
therefore molarity is 1.33 M
Answer:
Q = 5254.39 J
Explanation:
Given that,
Mass of ethanol, m = 68.8 g
The temperature increases from 40.0°C to 71.3°C.
The specific heat of ethanol is 2.44 j/g°C
We need to find the heat absorbed by the ethanol. We know that the heat absorbed due to the change in temperature is given by :
Put all the values,
So, 5254.39 J of heat is absorbed by Ethanol.
