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
sammy [17]
2 years ago
13

What is the frequency of an electromagnetic wave that has a wavelength of 4.55x10-3m

Chemistry
1 answer:
djverab [1.8K]2 years ago
5 0

Answer:

hnjilbglu

Explanation:

nbjl,bhuk

You might be interested in
During the formation of an ionic compound, the element with the higher ionization energy will gain electrons.
Lesechka [4]
False because you have to take it out and do it right
8 0
3 years ago
13. What is the symbol for Enthalpy change?
OverLord2011 [107]

Answer:

Explanation:

13 ) symbol of enthalpy change = Δ H .

14 ) enthalpy change is nothing but heat absorbed or evolved .

During fusion enthalpy change

Δ H .= m Lf , m is mass and Ls is latent heat of fusion

During evaporation, enthalpy change

Δ H .= m Lv , m is mass and Lv is latent heat of evaporation

during temperature rise , enthalpy  change

Δ H = m c Δ T

In case of gas , enthalpy change can be calculated by the following relation

Δ H = Δ E + W , Δ E is change in internal energy , W is work done by gas.

15 ) When enthalpy change is negative , that means heat is released to the environment .So reaction is called exothermic .

when heat is absorbed enthalpy change is positive . Reaction is endothermic.

5 0
2 years ago
What is the change in density if a sample goes from 3.21 g/L to 5.43 g/mL?
Step2247 [10]

Answer:

\Delta \rho =2.22 g/mL

Explanation:

Hello,

In this case, since a change in science is widely known to be considered as a subtraction between the the final and initial values of two measured variables and is represented via Δ, here the final density is 5.43 g/mL and the initial one was 3.21 g/mL, therefore, the change in density is:

\Delta \rho=\rho _f-\rho _i\\ \\\Delta \rho=5.43g/mL-3.21g/mL\\\\\Delta \rho =2.22 g/mL

Best regards.

3 0
2 years ago
Which of the following could not act as a medium for a mechanical wave?
Y_Kistochka [10]
I believe it is either A or B
7 0
3 years ago
Read 2 more answers
What is the volume of a rock that has a mass of 50 grams and a density of<br> 5 g/ml?
Brut [27]

Explanation:

density = mass/ volume

so,

volume = mass/ density

volume = 50 g/ 5 g/ml³

volume = 10 ml³

3 0
3 years ago
Other questions:
  • What volume of a 2.5 M stock solution of acetic acid (HC2H3O2) is required to prepare
    11·1 answer
  • The proportion of dissolved substances in seawater is usually expressed in
    13·1 answer
  • In order to jave 2.2 moles of potassium oxide, how many grams of potassium are needed
    15·1 answer
  • Helppppppppppppp it’s timedddddddddd
    12·1 answer
  • Lipid bilayers:A. depend on hydrophobic interactions to arrange the polar head groups together in the interior of the bilayer. B
    14·1 answer
  • What is the primary source of energy for most ecosystems
    13·2 answers
  • Which of the following are macro molecular colloids ?
    10·1 answer
  • The freezing point of a solution the freezing point of the pure solvent
    5·2 answers
  • What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6 g of toluene (C7H8)
    14·2 answers
  • Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece o
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!