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
melomori [17]
2 years ago
11

How come all skyscrapers don't look alike?

Chemistry
2 answers:
mr Goodwill [35]2 years ago
5 0

Answer:

It going to be confusing to see 10 skyscrapers that look the same and hard to go to the right one

Explanation:

aleksandr82 [10.1K]2 years ago
3 0

Answer:

Most skyscrapers look some what alike because those are the building dimensions that need to be used in order to keep the building standing they cannot be built skinnier wider or taller or it could fall over or collapse injuring millions of people

Explanation:

You might be interested in
Which is a derived unit?<br><br> joule<br><br> millimeter<br><br> kilogram<br><br> micrometer
disa [49]
It would be joule. I hope this helps!
4 0
2 years ago
Read 2 more answers
What is the temperature of a 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals? (Given: R = 8.31
Shalnov [3]
For this case, we use the equation for an ideal gas which is expressed as PV=nRT where P is the pressure, V is the volume, n is the number of moles and T is the temperature. We calculate as follows:

PV = nRT
T = PV / nR
T = 20 kPa (100 L) / 1 mol (8.314) 
T = 240.56 K
6 0
2 years ago
At constant volume, the heat of combustion of a particular compound, compound A, is − 3039.0 kJ / mol. When 1.697 g of compound
melisa1 [442]

Answer:

13.85 kJ/°C

-14.89 kJ/g

Explanation:

<em>At constant volume, the heat of combustion of a particular compound, compound A, is − 3039.0 kJ/mol. When 1.697 g of compound A (molar mass = 101.67 g/mol) is burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 3.661 °C. What is the heat capacity (calorimeter constant) of the calorimeter? </em>

<em />

The heat of combustion of A is − 3039.0 kJ/mol and its molar mass is 101.67 g/mol. The heat released by the combustion of 1.697g of A is:

1.697g.\frac{1mol}{101.67g} .\frac{(-3039.0kJ)}{mol} =-50.72kJ

According to the law of conservation of energy, the sum of the heat released by the combustion and the heat absorbed by the bomb calorimeter is zero.

Qcomb + Qcal = 0

Qcal = -Qcomb = -(-50.72 kJ) = 50.72 kJ

The heat capacity (C) of the calorimeter can be calculated using the following expression.

Qcal = C . ΔT

where,

ΔT is the change in the temperature

Qcal = C . ΔT

50.72 kJ = C . 3.661 °C

C = 13.85 kJ/°C

<em>Suppose a 3.767 g sample of a second compound, compound B, is combusted in the same calorimeter, and the temperature rises from 23.23°C to 27.28 ∘ C. What is the heat of combustion per gram of compound B?</em>

Qcomb = -Qcal = -C . ΔT = - (13.85 kJ/°C) . (27.28°C - 23.23°C) = -56.09 kJ

The heat of combustion per gram of B is:

\frac{-56.09 kJ}{3.767g} =-14.89 kJ/g

4 0
3 years ago
At 10°c one volume of water dissolves 3.10 volumes of chlorine gas at 1.00 atm pressure. what is the henry's law constant of cl2
s344n2d4d5 [400]
Answer is:  0,133 mol/ l· atm.
T(chlorine) = 10°C = 283K.
p(chlorine) = 1 atm.
V(chlorine) = 3,10 l.
R - gas constant, R = 0.0821 atm·l/mol·K. 
Ideal gas law: p·V = n·R·T
n(chlorine) = p·V ÷ R·T.
n(chlorine) = 1atm · 3,10l ÷ 0,0821 atm·l/mol·K · 283K = 0,133mol.
Henry's law: c = p·k.
k - <span>Henry's law constant.
</span>c - solubility of a gas at a fixed temperature in a particular solvent.
c = 0,133 mol/l.
k = 0,133 mol/l ÷ 1 atm = 0,133 mol/ l· atm.

4 0
3 years ago
Which best defines nitrogen fixation
arlik [135]

Answer: the conversion of nitrogen gas into a usable form

Explanation: its a process that bacteria converts nitrogen gas into a usable form

5 0
3 years ago
Other questions:
  • Pleas Help!
    15·1 answer
  • When you inflate a raft with air, the air expands to fill the raft and takes the shape of the raft. Why does this occur?
    10·2 answers
  • Which of the following statements is correct?
    15·1 answer
  • What is carbon dioxide an example of?
    12·2 answers
  • What holds atoms together in a molecule?
    9·2 answers
  • The slowest step of a reaction mechanism is called the
    11·1 answer
  • Please give just give me the first column of answers! I can do the rest. Just can’t find any.
    15·1 answer
  • Select each correct answer. More than one answer may be correct. Four atoms of hydrogen combine with one carbon atom to form CH4
    5·1 answer
  • What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40
    12·1 answer
  • An atom of element Be has four protons, four electrons, and five neutrons. Which element below could be an isotope of this atom?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!