1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katovenus [111]
2 years ago
15

A public School district furnishes pencils to its elementary school. The pencils the secretary orders from the district warehous

e each year are packaged in boxes that contain one gross (12 dozen). The average use of pencils is 9.3 pencils per student. If the school's enrollment is 812 students, what is the minimum number of boxes of pencils that should be ordered?
Chemistry
1 answer:
const2013 [10]2 years ago
3 0

Answer:

The minimum number of boxes of pencils to be ordered is 630 boxes.

Explanation:

Since a pupil uses averagely 9.3 pencils

and a box contains 12 pencils,

the school enrollment is also 812

school's enrollment x average use of pencil per student

__________________________________________

            number of pencils in a box

812 x 9.3 = 7551.6

7551.6 /12 = 629.3

Having a total number of 630 boxes of pencils to be ordered.

You might be interested in
The pyrolysis of ethane proceeds with an activation energy of about 300 kJ/mol. How much faster is the decomposition at 625°C th
Alona [7]

Answer:

The decomposition of ethane is 153.344 times much faster at 625°C than at 525°C.

Explanation:

According to the Arrhenius equation,

K=A\times e^{\frac{-Ea}{RT}}

\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]

where,

K_2 = rate of reaction at T_2

K_1 = rate of reaction at T_1

Ea = activation energy of the reaction

R = gas constant = 8.314 J/K mol

E_a=300 kJ/mol=300,000 J/mol

T_2=625^oC=898.15 K,T_1=525^oC=798.15 K

\log (\frac{K_2}{K_1})=\frac{300,000 J/mol}{2.303\times 8.314 J/K mol}[\frac{1}{798.15 K}-\frac{1}{898.15 K}]

\log (\frac{K_2}{K_1})=2.185666

K_2=153.344\times K_1

The decomposition of ethane is 153.344 times much faster at 625°C than at 525°C.

4 0
3 years ago
4. How can acids and bases behave in terms of electrolytes/reactivity?
icang [17]

Answer:

Strong acids are strong electrolytes. Such acids ionize completely.

Weak acids and bases are weak electrolytes. Such bases and acids ionize only to a small extent.

Explanation:

Electrolytes are the substances that produce ions when they are dissolved in water. Electrolytes can be categorized as bases, acids, and salts.

Strong acids are strong electrolytes. Such acids ionize completely.

Weak acids and bases are weak electrolytes. Such bases and acids ionize only to a small extent.

7 0
3 years ago
Hands moving on a battery-operated clock is an example of what kind of
Alexxandr [17]
The C is right answer
4 0
3 years ago
Read 2 more answers
Write the electrons configuration for an atom of an element whose atomic number is 8
Basile [38]
The electron configuration for a atom whose element has a atomic number of 8 (Oxygen) is 2,6
6 0
3 years ago
Please<br>list uses uses aluminium?​
Fiesta28 [93]

Answer:

We use aluminum almost every day, aluminum can be used for juice boxes, chip bags, cans, foils, electronics, and even our cars have aluminum.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Did scallops live before or after dinosaurs according to a fossil record
    9·2 answers
  • Different rocks have______ melting points​
    13·1 answer
  • What is the molar mass of CHC13?
    10·2 answers
  • Any change that alters a substance without changing it into another substance.
    14·1 answer
  • Which equation agrees with the ideal gas law?<br> V V2<br> OTT<br> O V. = V202<br> o Pina = P212
    8·1 answer
  • Let 4 moles of methanol (liquid) combust in 3 moles of gaseous oxygen to form gaseous carbon dioxide and water vapor. Suppose th
    9·1 answer
  • Hello everyone it's me the shy one. This is like my second post so here are the 4 questions.
    5·1 answer
  • BRAINLIST IF U ARE CORRECT AND ANSWER ALL OF THEM!!!!!!!!!!Match the name of the way water is used to its description.
    6·2 answers
  • How many moles are there in 7.24 grams of calcium carbonate? With work shown
    14·2 answers
  • Which components make up bronfenbrenner's ecological theory?(choose every correct answer.)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!