Answer:
Explanation:
<u>1) Find the z-scores:</u>
a) z-score for 22.6 inches length
- z = [ 22.6 - 20 ] / 2.6 = 1.00
b) z-score for 17.4 inches length
- z = [ 17.4 - 20 ] / 2.6 = - 1.00
<u>2) Probability</u>
Then, you have to find the probability that the length of an infant is between - 1.00 and 1.00 standards deviations (σ) from the mean (μ).
That is a well known value of 68%, which is part of the 68-95-99.7 empirical rule.
The most exact result is obtained from tables and is 68.26%:
- 1 - P (z ≥ 1.00) - P (z ≤ - 1.00) = 1 - 0.1587 - 0.1587 = 0.6826 = 68.26%
Answer:
1. Pressure increases
2. Volume increases
Explanation:
1. According to Gay-Lussac's law, at constant volume, the ratio of temperature and pressure is constant or they are directly proportional which essentially means if one increases or decreases, the other will too.
2. According to Charles' law, the volume is directly proportional to the temperature at constant pressure.
Hope that helped:)
Answer:
BRAINLIEST?
Explanation:
Ammonia is a typical weak base. Ammonia itself obviously doesn't contain hydroxide ions, but it reacts with water to produce ammonium ions and hydroxide ions. My findings said that ammonia is a weak base, potassium hydroxide is a strong base, vinegar is a weak acid and ethyl alcohol is a weak acid.
Vinegar and ethyl alcohol are eliminated as they are acids. The question is on bases.... Potassium hydroxide is a strong base. So we are left with ammonia, being a weak base.
A is your answer
1. Protons
2. An atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons
3. C
4. The same volume, but a different shape.5.Physical
6.Bubbles
7.<span> Picture I shows a chemical change, because a new substance is formed
8.I
9.Ge
10.</span> The elements have the same number of valence electrons.
Answer:
C
Explanation:
Temperature, humidity, and pressure are all the same through an air mass.