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
Marizza181 [45]
3 years ago
15

Please help me. It would mean a lot to me please

Chemistry
1 answer:
Nostrana [21]3 years ago
6 0

Answer:

7 cm, 70 mm

Explanation:

there is 7 cm, and to turn that into mm you multiply the cm by 10, giving you 70

You might be interested in
What happens inside an air-filled balloon is squeezed on all sides?
Blizzard [7]

Answer: The air molecules move closer together.

Explanation:

6 0
3 years ago
Telephone signals are often transmitted over long distances by microwaves. what is the frequency of microwave iradiation with a
Alborosie
<span>c = speed of light = 3.00 x 10^5 km/s = 3.00 x 10^8 m/s
  λ = wavelength of the microwave radiation = 3.50 cm = 0.035 m
  f = frequency (in Hertz) = to be determined
    f = c/λ = 3.00 x 10^8 m/s / 0.035 m
  f = 8.57 x 10^9 Hz Frequency</span>
6 0
4 years ago
Read 2 more answers
Octane has a higher boiling point than pentane because _____.
Anastasy [175]
O<span>ctane has a higher boiling point than pentane because it contains a higher amount of atoms specifically carbon than the number of propane found on it. You can find a large number of London dispersion which is attractive forces than butane. </span>
6 0
3 years ago
what is the temperature of an 11.2 L sample of carbon monoxide, CO, at 744 torr if it occupies 13.3L at 55 degrees Celsius and 7
Rus_ich [418]

Answer:

3 °C

Explanation:

The pressure is constant, so this looks like a case where we can use Charles’ Law:

\frac{ V_{1} }{T_{1}} = \frac{V_{2} }{T_{2}}  

Invert both sides of the equation.

\frac{T_{1} }{V_{1}} = \frac{T_{2} }{V_{2}}

Multiply both sides by <em>V</em>₂

T_{2} = T_{1} \times \frac{V_{2} }{ V_{1} }

<em>V</em>₁ = 13.3 L; <em>T</em>₁ = (55 + 273.15) K = 328.15 K

<em>V</em>₂ = 11.2 L; <em>T</em>₂ = ?

T_{2} = \text{328.15 K} \times \frac{\text{11.2 L} }{\text{13.3 L}} = \text{276 K} = 3 ^{\circ}\text{C}

8 0
3 years ago
Explain how understanding of atomic emission spectrum led to development of the atomic theory
Anon25 [30]

Max Planck presented a theoretical explanation of the spectrum of radiation emitted by an object that glows when heated. He argued that the walls of a glowing solid could be imagined to contain a series of resonators that oscillated at different frequencies. These resonators gain energy in the form of heat from the walls of the object and lose energy in the form of electromagnetic radiation. The energy of these resonators at any moment is proportional to the frequency with which they oscillate.

To fit the observed spectrum, Planck had to assume that the energy of these oscillators could take on only a limited number of values. In other words, the spectrum of energies for these oscillators was no longer continuous. Because the number of values of the energy of these oscillators is limited, they are theoretically "countable." The energy of the oscillators in this system is therefore said to be quantized. Planck introduced the notion of quantization to explain how light was emitted.

4 0
4 years ago
Other questions:
  • since butane is not found on the periodic table,how could you find the molar mass of butane(mass of one mole of butane molecules
    9·2 answers
  • What kind of charge does a cation have
    11·2 answers
  • The equilibrium fraction of lattice sites that are vacant in silver (ag) at 500°c is 0.5 x 10-6. calculate the number of vacanci
    13·1 answer
  • What type of a reaction takes place when atoms or molecules rearrange to form new substances
    6·2 answers
  • Acetylene gas C2H2 undergoes combustion to form carbon dioxide and water when it is used in the oxyacetylene torch for welding.
    10·2 answers
  • What era is know as the age of mammals?
    13·1 answer
  • What is the mole fraction, x, of solute and the molality for an aqueous solution that is 16.0 % NaOH by mass
    13·1 answer
  • Why does the hull of an ongoing ship rust quickly
    12·1 answer
  • Which statement describes how heat is transferred by convection?
    15·1 answer
  • Commercial agriculture can often lead to water-quality problems. In one to two sentences, explain how two of those problems occu
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!