Answer:
Thermochemistry
Explanation:
Thermochemistry is the area of study in chemistry that is concerned with the heat transfers that occur during chemical reactions.
Answer:
75.2 degree Fahrenheit was the predicted high temperature.
Explanation:
Predicted high temperature in the Spain = T' = 24°C
In Spain temperatures are measured in Celsius. But we have to calculate the temperature in Fahrenheit .
To convert this temperature into Fahrenheit, we use the conversion factor:
75.2 degree Fahrenheit was the predicted high temperature.
Answer:
83.99 KC1 1.
Explanation:
What is the total number of grams of KCl (formula 2.200M=xmol - 200 mdr o mass = 74.6) in 1.00 liter of 0.200 molar solution? 3941+355 74.69 ml atonal 1.13 mol 174.6g) = 83.99 KC1 1.
Answer:
Option A
Explanation:
Silicon (Obtained from Sand (SiO2)) is the element that is primarily used in appliances to make electronic chips.
The answer is: B. It undergoes phase change.
A physical change occurs when a substance changes phase.
For example, evaporization is phase change process in which the water changes from a liquid to a gas (water vapor).
Condensation is phase change process in which the water changes from a gas to a liquid.
If the arrangement of particles is changed, that is chemical change or chemical reaction (new substance is formed).