While in Europe, if you drive 107km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 39.0mi/gal ? Assume that 1euro=1.26dollars.
Answers
107*7 = 749km in one week
749/1.6 = 468.125 miles
468.125/39 = 12.0032051282 gallons of fuel needed
1 gallon = 4.54609 litres
1.1(Cost per litre)*4.54609(Number of litres per gallon)*12.0032051282(Number of gallons needed) = 60.0244158814 euros cost per week
60.0244158814 * 1.26 = 75.6307640105 dollar cost per week
$75.63
Answer:
$ 62.578
Explanation:
Conversion factors:
1 gal = 3.785 L
1.609km = 1 mi
$1.26 = 1 euro
1 week = 7 days
Converting the car’s mileage from mi/gal to km/L
39 mi/gal x 1 gal/3.785L x 1.609km/1 mi = 16.578 km/L
Finding the L required in a day
107 km x 1L/16.578 km = 6.45 L
Finding the euro spent in day
1.10 euro/L x 6.45 L = 7.095 euro/ day
Finding the euro spent in a week and converting it to dollars
7.095 euro/ day x 7 days x $1.26/ 1 euro = $ 62.578
Related Questions
3. 56 g of N₂ reacts 9 g of H₂ in a closed vessel to form NH3. Which reactant is left in excess and how 2207 much? 1) N₂, 10. g +3th = 2013/ (3) N₂, 14 g (2) H₂, 4 g (4) H₂,3 g N₂- to d A
What process causes dissolved substances to be left behind to form minerals after water in lakes or ponds evaporates?
Which atom in the ground state has a partially filled second electron shell?hydrogen atom lithium atom potassium atom sodium atom
How many days are really in a year
Answers
Answer:
Explanation:
The best choice to prepare a buffer of pH 9.0 is a conjugate acid/base pair in which the acid has pKₐ = 9.0 ± 1.
Let's examine each of the choices.
A. NH₃/NH₄Cl
For NH₃, = pK_b = 4.75
For NH₄⁺, pKₐ 14.00 - 4.75 = 9.25
B. HCHO₂/NaCHO₂
For HCHO₂, pKₐ = 3.74
C. C₅H₅N/ C₅H₅NHCl
For C₅H₅N, = pK_b = 8.76
For C₅H₅N⁺, pKₐ 14.00 – 8.76 = 5.21
D. HNO₂/NaNO₂
For HNO₂, pKₐ = 3.33
The only acid with a pKₐ close to 9.0 is the ammonium ion.
The best buffer to prepare a buffer with pH 9.0 is
From the given options, the best combination to prepare a buffer with a PH of 9.0 is given by;
Option 1; NH₃;NH₄Cl
- A buffer solution is defined as an aqueous solution that consists of a mixture of a weak acid and its conjugate base or mixture of a weak base and its' conjugate acid.
Now, we want to find the best choice to prepare a buffer of pH 9.0. Thus, let us look at each option;
Option 1; NH₃;NH₄Cl
We are given that pK_b for NH₃ is 4.75
Thus pKₐ for NH₄ is;
NH₄; pKₐ = 14.00 - 4.75
NH₄; pKₐ = 9.25
Option 2; HCHO₂; NaCHO₂
We are given that pK_a for HCHO₂ is 3.74
HCHO₂; pKₐ = 3.74
Option 3;C₅H₅N; C₅H₅NHCl
We are given that pK_b for C₅H₅N is 8.76
Thus
For C₅H₅N, = pK_b = 8.76
Thus, pKₐ for C₅H₅N is;
C₅H₅N; pKₐ = 14.00 – 8.76
C₅H₅N; pKₐ = 5.21
Option 4; HNO₂;NaNO₂
We are given pKₐ for HNO₂ as 3.33
HNO₂; pKₐ = 3.33
Looking at all the pKₐ values, the only acid that has a pKₐ close to 9.0 is NH₄ with a pKₐ of 9.25.
In conclusion, the best combination to prepare a buffer with pH of 9.0 is
NH₃;NH₄Cl
Read more at; brainly.com/question/15592723
2.5 x 10-2 L
25 m3
Answers
2500 mL
250 mL
25mL
2,500,000,000mL
So the third one is the smallest
Answers
>Conservation is, preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife
>Two examples are;
* turn off the water from the bathroom thing the sink while brushing your teeth or something
* If you don't drink all your water from the water bottle use it to water a plant or something ✌
Answer:
Conservation is using a resource wisely so it will not be used up. Possible examples include: take shorter showers; fill the bathtub only halfway; do not run water while scrubbing vegetables or brushing teeth; water lawns early in the morning or late in the afternoon; and run the washing machine only for a full load.
Explanation:
Answers
In the periodic table, the group number of astatine is 17 while that of tellurium is 16, hence the size of astatine is larger as compared to tellurium as it has one more shell present in it's atom.
What is periodic table?
Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.
It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.
Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.
Learn more about periodic table,here:
#SPJ2
b. spontaneous recovery.
c. learning associations.
d. observational learning.
Answers
Two types of conditioning.
1) Classical conditioning
2) Operant conditioning.
Classical conditioning happens when an individual learns to associate two stimuli. This happens when an association is learned between an unconditioned stimulus and a conditioned stimulus.
Operant conditioning happens when an individual associates a behaviour with a consequence. For example, when a behaviour produces a good consequence; the individual is conditioned to repeat the behaviour to garner the same good consequence, and vice versa.
Final answer:
Conditioning is the process of learning associations between events that occur in a being's environment. It can be split into Classical and Operant conditioning, with the former dealing with learning associations between two stimuli that co-occur and the latter with learning associations between a behavior and its consequence.
Explanation:
Conditioning is the process of learning associations between events that occur in an organism's environment. This can be further divided into two main types: Classical (or Pavlovian) conditioning and Operant (or Instrumental) conditioning. Classical conditioning involves learning associations between two stimuli that co-occur, while Operant conditioning is learning associations between a behavior and its consequences.
For example, if a student studies hard (behavior) and then gets good grades (consequence), this could reinforce the student's study habits through operant conditioning. The more this association is reinforced, the stronger the learning becomes. So, the correct answer to the question is c. learning associations.
Learn more about Conditioning here:
#SPJ6
18°
23°
45°
60°