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
fomenos
2 years ago
8

Frequency of 6.98 x 1013

Chemistry
1 answer:
MAVERICK [17]2 years ago
6 0

Answer:7,070.74

Explanation:because frequency has a lot of energy

You might be interested in
3. Determine the pH of each of the following solutions. (Hint: See Sample Problem B.) a. 1.0 x 10-2 M HCI c. 1.0 x 10-MHI b. 1.0
densk [106]

Answer:

a. pH = 2 b. pH = 3 c. pH = 1 d. Unanswerable

Explanation:

pH = -log[H+] OR pH = -log{H3O+]

                    and inversely

pOH = -log[OH-]

1. Determine what substance you are working with, (acid/base)

2. Determine whether or not that acid or base is strong or weak.

a. 1.0 x 10^-2M HCl

HCl is a strong acid, therefore it will dissociate completely into H+ and Cl- with all ions going to the H+, therefore, the concentration of HCl and concentration of H+ are going to be equal, meaning we simply take the negative logarithm of the concentration of HCl and that would equal pH

pH = -log[H+]

pH = -log(1.0x10^-2)

pH = 2

b. 1.0 x 10^-3M HNO3

HNO3 like part a, is a strong acid, therefore it would simply require you to take the negative logarithm of the concentration of the compound itself, to find its pH.

pH = -log[H+]

pH = -log(1.0 x 10^-3)

pH = 3

c. 1.0 x 10^-1M HI

Like the previous parts, HI is a strong acid

pH = -log[H+]

pH = -log(0.10)

pH = 1

d. HB isn't an element, nor is it a compound so that would be unanswerable.

3 0
3 years ago
A 225-g sample of aluminum was heated to 125.5 oc, then placed into 500.0 g water at 22.5 oc. (the specific heat of aluminum is
Sidana [21]
when  heat gained = heat lost 

when AL is lost heat and water gain heat

∴ (M*C*ΔT)AL = (M*C*ΔT) water

when M(Al) is the mass of Al= 225g 

C(Al) is the specific heat of Al = 0.9 

ΔT(Al) = (125.5 - Tf) 

and Mw is mass of water  = 500g

Cw is the specific heat of water = 4.81 

ΔT = (Tf - 22.5) 

so by substitution:

∴225* 0.9 * ( 125.5 - Tf) = 500 * 4.81 * (Tf-22.5)

∴Tf = 30.5 °C
7 0
3 years ago
Read 2 more answers
As the energy of the molecules increases, the motion of the molecules _______.
Alexus [3.1K]

Answer:

the motion of molecules increases

6 0
2 years ago
The electrons which are primarily responsible for chemical bonds are:
earnstyle [38]
Is there any choices because i can answer if you give me choices
4 0
2 years ago
Read 2 more answers
a can of diet soda will float in water while a can of regular sugar soda will sink. which of these best describes why this would
Yuri [45]
I think the correct answer from the choices listed above is option A. A can of diet soda will float in water while a can of regular sugar soda will sink. This is due to the reason that the regular soda is more dense than the diet soda. Hope this answers the question.
5 0
2 years ago
Other questions:
  • Which of the following statements about tornadoes is false?
    14·2 answers
  • Write the correct formula for the ionic compound composed of magnesium and carbonate
    7·1 answer
  • Uses a special type of paper to separate liquids based on their different densities
    15·1 answer
  • How do ionic bonds form??
    13·1 answer
  • Two volatile liquids A (P A pure= 165 Torr) and B (PB pure= 85.1 Torr) are confined in a piston/cylinder assembly. Initially onl
    15·1 answer
  • The process by which dissolved gases are exchanged between the blood and interstitial fluids is
    7·1 answer
  • How many moles of NaCl are contained in 144 mL of a 1.65 M NaCl solution?
    9·1 answer
  • PLEASE HELP ME!!!
    12·1 answer
  • A cube has a height of 8 cm and a mass of 457 g. What is its density?
    5·1 answer
  • Which of the following shows the correct path of blood through the heart and lungs?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!