answer.
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
Ber [7]
2 years ago
12

After careful analysis, an electromagnetic wave is found to have a frequency of 7.8 x 10^6 Hz. What is the speed of the wave?

Chemistry
1 answer:
damaskus [11]2 years ago
4 0

Answer:

 

Explanation:

You might be interested in
What mass of lif is contained in 18.66 g of a 20.0% by mass solution of lif in water?
aev [14]
Answer is: mass of lithium fluoride is 3,732 grams.
m(solution) = 18,66 g.
ω(solution) = 20% = 20% ÷ 100% = 0,2.
m(LiF) = ?
ω(solution) = m(LiF) ÷ m(solution).
m(LiF) = ω(solution) · m(solution).
m(LiF) = 0,2 · 18,66 g.
m(LiF) = 3,732 g.
7 0
2 years ago
Which of the following statements concerning a metal crystallized in a face-centered cubic cell is/are CORRECT? 1. One metal ato
AleksAgata [21]

Answer:

Only 3 is correct.

Explanation:

The crystal of a metal or an ionic compound is called a cell, and there are 7 types of unit cells: cubic, tetragonal, orthorhombic, monoclinic, hexagonal, rhombohedral, and triclinic.

In a face-centered cubic cell (FCC) all angles are 90º and all lengths are equal. Each cubic cell has 8 atoms in each corner of the cube, and that atom is shared with 8 neighboring cells. So for a metal crystal, the atom is located at each of the eight lattice points, where it is shared equally between eight unit cells.

5 0
2 years ago
Cyclohexane has a freezing point of 6.50 ∘C and a Kf of 20.0 ∘C/m. What is the freezing point of a solution made by dissolving 0
ExtremeBDS [4]

Answer:

The freezing point will be 2.9^{0}C

Explanation:

The depression in freezing point is a colligative property.

It is related to molality as:

Depressioninfreezing point=K_{f}Xmolality

Where

Kf= 20\frac{^{0}C}{m}

the molality is calculated as:

molality=\frac{moles_{solute}}{mass_{solvent}}

moles=\frac{mass}{molarmass}=\frac{0.694}{154}=0.0045mol

massofcyclohexane=25g=0.025Kg

molarity=\frac{0.0045}{0.025}=0.18m

Depression in freezing point = 20X0.18=3.6^{0}C

The new freezing point = 6.5^{0}C-3.6^{0}C=2.9^{0}C

5 0
2 years ago
On Earth a package weighs 19.6 newtons. What is the mass of this package on Earth?
kondor19780726 [428]

g = 19.6 N/2.2 kg. g = 8.9 m/s2. 7.

4 0
2 years ago
The mass of sample X is 20.0 g. It was placed in a graduated cylinder and the water level rose from A to B. What is the density
Nadya [2.5K]

Answer: 4.0 g/ml

Explanation:

3 0
2 years ago
Other questions:
  • In the correct lewis structure for the nitrate ion, no3 –­, nitrogen has how many covalent bonds?
    7·1 answer
  • When you open a bottle of a soft drink and leave it open, the drink eventually goes flat. this happens because the equilibrium b
    6·1 answer
  • Abdul swabs one of his sister’s arms with water. He swabs her other arm with rubbing alcohol.
    14·1 answer
  • In general, which attractions are stronger: intermolecular or intramolecular? Research and explain a quantitative comparison bet
    6·1 answer
  • A grocery store has 75 dozen packages of hotdogs In stock. If there are 10 hot dogs in each package, how many moles of hot dogs
    13·2 answers
  • List the number of each type of atom on the left side of the equation 2C10H22(l)+31O2(g)→20CO2(g)+22H2O(g)
    14·1 answer
  • The acid HOCl (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles
    15·1 answer
  • A 10.0 g sample of LiOH is dissolved in 120.00 g of water at 23.0°C in a coffee-cup calorimeter with a heat capacity of 100 J/Â
    9·1 answer
  • Complete the reaction, which is part of the electron transport chain. The abbreviation FMN represents flavin mononucleotide. Use
    11·1 answer
  • Which of these was not proposed by john dalton in 1805?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!