hrijaymadathil
09.09.2021 •
Chemistry
Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 ∘C. A 250 mL sealed flask contains 0.8 g of butane at −22∘C. How much butane is present as a liquid?
Solved
Show answers
More tips
- W Work and Career Which types of activities are not subject to mandatory licensing?...
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Chemistry
- C Chemistry 5 mol Cs H12 12 calculate mass into grams...
- C Chemistry Choose the correct measurement for a graduated cylinder having collaboration of 2 mL. A: 43 mL B: 43.25 mL C: 43.0 mL D: 43.00 mL...
- C Chemistry A student carries out this reaction and obtains 11.4 g of W. If the percent yield is 70.4 %, what mass of WO3 was used when 2NO2 + O3 -- N2O5 + O2...
- C Chemistry When entrepreneurs develop new products, other companies also experience growth because they...
- C Chemistry describe the structure and function of the circulatory system. how does the circulatory system help maintain homeostasis in the human body?...
- C Chemistry Calculate the pol of a.29 M solution of H2SO4 O a Ob OC Od 0.24 13.45 0.56 13.76 Question 5 (2 points) Calculate the pH of a .0250 M solution of NaOH. 1.602 ob 12.398...
- C Chemistry which of these choices is the smallest unit of matter?...
- C Chemistry What’s your plan for college to do or to study for...
- C Chemistry Henry claims that there must be a point in between points a and e where the total gravitational force is zero...
- C Chemistry 1.)if you are given the number of particles in a substance sample, what is the first step you should take to determine how many grams are present in that sample? find...
Ответ:
see below
Step-by-step explanation:
A. f(x) = 4x^2 - 7x - 15
We need the numbers to multiply to- 15
1*15 and 3*5
One of the terms multiplies by 4 (or 2)
Try 4 first
4*-3 +5 = -7 That works
-3+5 = -15
f(x) = (4x+5)(x-3)
B. We want the x intercepts so set equal to 0
0 = (4x+5)(x-3)
Using the zero product property
0 = 4x+5 x-3 =0
-5 = 4x x=3
-5/4 =x x=3
C End behavior
Let x be negative infinity
The function is dominate by 4x^2
f(-∞) = 4 ( -∞) ^2 = 4 (∞) = ∞
At negative infinity the functions goes to infinity
Let x be infinity
The function is dominate by 4x^2
f(∞) = 4 ( ∞) ^2 = 4 (∞) = ∞
At infinity the functions goes to infinity
Part D:
We know the zeros at 3 and -5/4
We know the vertex is at halfway between the zeros
(3 -5/4) /2 = 7/4 /2 = 7/8
Since the parabola opens up (The coefficient of the x^2 term is positive), we know we have a minimum.
f(7/8) = 4 (7/8)^2 -7(7/8) -15 = 4(49/64) -1/8 -15 =-289/16
We know the minimum the zeros and the end behavior, we can graph the functions