When mixing substances, in order to find the final temperature after mixing, it is important to remember that the energy released should be equal to the energy absorbed by the system. We calculate as follows:
Q1 = Q2
(mCΔT)1 = (mCΔT)2
100 ( 90 - T ) = 50 ( T - 10 )
T = 63.33 °C
Answer:
A. False
B. False
C. True
Explanation:
<em>A. The three quantum numbers (n, l, and ml) define an atomic orbital. If n, the principal quantum number, has a value of 6 the maximum value of l is 6.</em> FALSE. The first part is true. However, the maximum value of l is n-1. So, if n is 6, l can take values up to 5.
<em>B. The principal quantum number, n, can have any integer value from 0 to infinity. For electrons in s, p, and d orbitals, the d electrons are the most shielded.</em> FALSE. n can take positive integer values, that is, it cannot take the value 0. Usually, the d electrons are the most shielded.
<em>C. The magnetic quantum number, ml indicates the orientation of the orbital in the space around the nucleus.</em> TRUE. For instance, spheric s orbital has only 1 orientation (1 value for ml), whereas lobed p orbital can be oriented along the three axes (3 values for ml).
Answer:
As electro-negativity decreases from Florine to downwards in the group and only Florine is above Chlorine, so Florine should react with sodium chloride solution to produce chlorine.
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The elements can also be classified into the main-group elements (or representative elements) in the columns labeled 1, 2, and 13–18; the transition metals in the columns labeled 3–12; and inner transition metals in the two rows at the bottom of the table (the top-row elements are called lanthanides and the bottom-row ...
Answer: 100 billion
Explanation: Astronomers have estimated there is anywhere between 100 and 400 billion stars in the milky way.