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
Zepler [3.9K]
4 years ago
8

002 10.0 points

Chemistry
1 answer:
likoan [24]4 years ago
5 0

Answer:

option 3 = 3.41 m

Explanation:

Given data:

Frequency of signals = 88.1 MHz or 88.1 × 10⁶ Hz

Wavelength = ?

Solution:

Formula:

λ = c / f

λ = Wavelength

c = speed of light

f = frequency

λ = c / f

λ = 3 × 10⁸ m.s⁻¹ /  88.1 × 10⁶ s⁻¹

λ = 0.0341 × 10² m or 3.41 m

You might be interested in
Which of these is a compound?<br> A)air<br> B)sugar C12H22O11<br> C)the alloy steel<br> D)nitrogen N
7nadin3 [17]
Nitrogen N I think would be the answer
6 0
3 years ago
Following the instructions in your lab manual, you have titrated a 25.00 mL sample of 0.0100 M KIO3 with a solution of Na2S2O3 o
vivado [14]

<u>Answer:</u>

<u>For 1:</u> The amount of potassium iodate that were titrated is 2.5\times 10^{-4} moles

<u>For 2:</u> The amount of sodium thiosulfate required is 1.25\times 10^{-4} moles

<u>Explanation:</u>

  • <u>For 1:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in L)}}

Molarity of KIO_3 solution = 0.0100 M

Volume of solution = 25 mL

Putting values in above equation, we get:

0.0100M=\frac{\text{Moles of }KIO_3\times 1000}{25}\\\\\text{Moles of }KIO_3=\frac{0.0100\times 25}{1000}=0.00025mol

Hence, the amount of potassium iodate that were titrated is 2.5\times 10^{-4} moles

  • <u>For 2:</u>

The chemical equation for the reaction of potassium iodate and sodium thiosulfate follows:

2KIO_3+Na_2S_2O_3\rightarrow K_2S_2O_3+2NaIO_3

By Stoichiometry of the reaction:

2 moles of potassium iodate reacts with 1 mole of sodium thiosulfate

So, 0.00025 moles of potassium iodate will react with = \frac{1}{2}\times 0.00025=0.000125mol of sodium thiosulfate

Hence, the amount of sodium thiosulfate required is 1.25\times 10^{-4} moles

6 0
3 years ago
Suppose you are working in a chemistry lab and trying to make a solution of a substance called Sodium Chloride (which is a solid
Alenkasestr [34]

Answer:

a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer

Explanation:

The lab apparatus that would be needed to prepare a solution of sodium chloride would be <em>a weighing balance, a measuring cylinder, a spatula, a beaker/flask, and a stirrer.</em>

The weighing balance would be used to weigh out the required amount of sodium chloride. The beaker or flask would be placed on the weighing balance and its weight zeroed. The spatula would then be sued to take out the sodium chloride from its container into the beaker till the required amount is reached. The measuring cylinder would then be used to measure out the required volume of water which would be added to the salt in the beaker. The stirrer would then be used to stir the mixture in order for the salt to dissolve.

7 0
3 years ago
Whats the main difference between a double replacement reaction and a single replacement
aivan3 [116]

Answer:

a single-replacement reaction replaces one element for another in a compound. A double-replacement reaction exchanges the cations, or the anions, of two ionic compounds.

7 0
3 years ago
What atoms make up a carboxyl group?
statuscvo [17]

Answer:

The answer to your question is below

Explanation:

Carboxyl group is the characteristic group of carboxylic acids.

It is composed by 1 atom of carbon, 2 atoms of oxygen and 1 atom of hydrogen.

Its structure is   - COOH

7 0
4 years ago
Read 2 more answers
Other questions:
  • Which of the following statements is NOT true?
    8·1 answer
  • What best explains the type of energy present in the wheels of a moving bus
    7·1 answer
  • Which one of these is the accepted name for the compound n2o5?
    7·1 answer
  • what is the number of pairs of electrons that are shared between the nitrogen atoms in a molecule of N2
    7·2 answers
  • A block of aluminum occupies a volume of 0.015 L and has a mass of 40.5 g. What is its density
    6·1 answer
  • How many moles of Na2CO3 are in 100.0ml of a 2.0M solution?
    11·1 answer
  • The molar mass CO2 is 44.01 g/mol. How many moles of LiOH are needed to react completely with 25.5 g of CO2?
    5·1 answer
  • A hydrocarbon contains C,H, and F atoms. A 5.43 g sample of this hydrocarbon was analyzed and the mass of 2.35 g of carbon and 0
    13·1 answer
  • 10<br> o<br> 20<br> 30<br> 40<br> 90<br> 60<br> 80<br> 50<br> g<br> 70<br> 0<br> 1<br> 2<br> 3<br> 4<br> 6<br> 9<br> 7<br> 8<br>
    15·1 answer
  • How much heat will be released (AH) if
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!