Longitudinal waves. In a longitudinal wave the particles in the medium move parallel to the direction waves go. A good example can be the p-waves in an earthquake.
Answer:
Explanation:
The chemical reaction involved is as follows
H₃BO₃ + 4HF = HBF₄ + 3H₂O
1 mol 1 mol
mol weight of H₃BO₃ is 61.84 gm
50g = 50 / 61.84 mol.
= 0.8 mol.
.8 mol of H₃BO₃ will form .8 mol of BF₄⁻ ion .
The temperature if the volume were changed to 225 ml at a pressure of 785 torrs is 129K.
Pressure is constant.
so
V1 / T1 = v2 / T2
so
T2 = V2 T1 / V1
T2 = 225 x 242 / 422
T2 = 129K
What is temperature?
Temperature is a measure of hotness or coldness expressed on several scales, including Fahrenheit and Celsius. Temperature indicates the direction in which thermal energy spontaneously flows - ie, from a hotter body (one at a higher temperature) to a colder body (another at a lower temperature).
The Fahrenheit temperature scale (°F) is used in the United States and some other English-speaking countries. The Celsius temperature scale (°C) is standard in almost all countries that have adopted the metric system and is widely used in science. The Kelvin (K) scale, the absolute temperature scale is recognized as the international standard for scientific temperature measurement.
To learn more about temperature, refer;
brainly.com/question/15267055
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Answer:
Ca - 63.546 g
2N - 28.014 g
2O3 - 96 g
Ca(NO3)2 = 187.56 g
187.56 g x 0.75 mol = 140.67 g
Explanation:
Hope this helps
