Answer: The closeness of a measurement to its true value is a measure of its accuracy.
Explanation:
Precision refers to the closeness of two or more measurements to each other. Example: If we measure weight four times and we get 60 kg each time. Then the measurement is very precise.
Accuracy refers to the closeness of a measured value to a standard or known value. Example: If the weight of the body is 60 kg and one person measures 58 kg and another person measures 59 kg. Then, the weight measured by second person is more accurate.
Thus the closeness of a measurement to its true value is a measure of its accuracy
Answer:
The speed of a wave is a measure of the product of its frequency and wavelength. ... Since the frequency is kept constant, then it is the constant of proportionality. The wavelength is directly proportional to the speed. Therefore, if speed is increased, wavelength will increase.
12.7% NaCl
Hello, I believe this question is talking about the mass percentage of sodium chloride and we must use stoichiometry and then divide by the total mass of the mixture
This is what I did
0.12g Na x 1/22.99 x 1NaCl/Na x 58.44/1
This will result in 0.305 grams
When then divide this by 2.4
0.305/2.4 = 0.127, then multiply by 100
12.7%
H= energy of product minus energy of reactant
H is endothermic and positive when heat is absorbed
H is exothermic and negative when heat is released
You forgot to attach the diagram but I have an idea of what it might look like. So since the energy of reactant is at a lower level and energy of product is at a higher level, the reaction will be positive.
Answer: C. The difference of the energy of the reactants and the energy of the products.
Noble hases because they have all the shells full of electron so they don t have left electrons to pair with other electrons from other elements
