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
stellarik [79]
2 years ago
14

A wave is moving toward the shore If its frequency is 2.7 hertz, what is its wavelength? What would the correct number of signif

icant figures be?
Chemistry
1 answer:
ArbitrLikvidat [17]2 years ago
7 0

Answer:

λ = 1.1×10⁸ m

Explanation:

Given data:

Frequency of wave = 2.7 Hz

Wavelength of wave = ?

Solution:

Formula:

Speed of wave = frequency × wavelength

Speed of wave = 3×10⁸ m/s

now we will put the values in formula.

3×10⁸ m/s = 2.7 s⁻¹ × λ

λ = 3×10⁸ m/s /2.7 s⁻¹

λ = 1.1×10⁸ m

You might be interested in
What energy conversion occurs when a plant uses energy from the sun to make sugar stored in fruit?
vovikov84 [41]
What energy conversion occurs when a plant uses energy from the sun to make sugar stored in fruit easy, the answer is photosynthesis
7 0
3 years ago
ANSWER QUICK I VOTE AS BRAINLIEST
77julia77 [94]
The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount. There for the answer is 33.1% or 3.3g/kg
5 0
2 years ago
One of the hydrates of MnSO4 is manganese(II) sulfate tetrahydrate . A 71.6 gram sample of MnSO4 4 H2O was heated thoroughly in
Dennis_Churaev [7]

Answer:

48.32 g of anhydrous MnSO4.

Explanation:

Equation of dehydration reaction:

MnSO4 •4H2O --> MnSO4 + 4H2O

Molar mass = 55 + 32 + (4*16) + 4((1*2) + 16)

= 223 g/mol

Mass of MnSO4 • 4H2O = 71.6 g

Number of moles = mass/molar mass

= 71.6/223

= 0.32 mol.

By stoichiometry, since 1 mole of MnSO4 •4H2O is dehydrated to give 1 mole of anhydrous MnSO4

Number of moles of MnSO4 = 0.32 mol.

Molar mass = 55 + 32 + (4*16)

= 151 g/mol.

Mass = 151 * 0.32

= 48.32 g of anhydrous MnSO4.

3 0
2 years ago
the scientific law of conservation of mass states that the total amount of mass in an isolated system remains constant. This mea
Verdich [7]
It describes how, when particles/mc/elements react, despite forming different substances the mass is neither created nor destroyed but only converted.
4 0
2 years ago
Read 2 more answers
Estimate ΔH for the reaction using bond dissociation energies from Table 7.1. Give your answer in kcal. C6H12O6 has five C−C bon
Nat2105 [25]

The equation for the photosynthesis reaction in which carbon dioxide and water react to form glucose is . The hear reaction is the difference between the bond dissociation energies in the products and the bond dissociation energies of the reactants

 

The reactant molecules have 12 C = O, 12 H - O bonds while the product molecules have 5 C - C, 7 C – O, 5 H – O, and 6 O = O bonds. The average bond dissociation energies for the bonds involved in the reaction are 191 for C = O, 112 for H – O, 83 C –C, 99 C – H, 86 C – O, 119 O = O.

 

Substitute the average bond dissociation energies in the equation for and calculate as follows

= [12 (C=O) + 12 (H-O)] – [5(C-C) + 7(C-H) + 7 (C-O) + 5(H-O) + 6(O=O)]

= [12x191 kcal/mol + 12x112 kcal//mol] – [5x83 kcal/mol + 7x99 kcal/mol + 7x86 kcal/mol + 5x112 kcal/mol + 6x119 kcal/mol]

= 3636 kcal/mol – 2984 kcal/mol = 652 kcal/mol x 4.184 Kj/1kcal = 2.73x10^3 kJ/mol

 

So, enthalpy change for the reaction is 652 kcal/mol or 2.73x10^3 kJ/mol

<span> </span>

5 0
3 years ago
Other questions:
  • Which of the following is not a type of radiation?
    5·2 answers
  • PLEASE HELP Me with this Quickly
    5·1 answer
  • The mass of an object will be the same on the Earth as it is on the Moon.<br><br><br> NEED HELP ASAP
    9·1 answer
  • Bored fr so so bored anyone at all wanna hang only if your from14-16
    13·2 answers
  • What type of reproduction occurs in members of the bacteria kingdom?
    11·1 answer
  • If you look at the reflection of your face on the back of a spoon, your face will be right-side up. If you flip the spoon to the
    14·2 answers
  • A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this samp
    11·2 answers
  • HELP PLEASE!! Ndnsjjsjsjeh
    5·1 answer
  • Please help mee!!!! ​
    8·1 answer
  • lodine-131 is a radioactive isotope with a half-life of 8 days. How many grams of a 50 g sample will be left after 48 days?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!