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
bazaltina [42]
3 years ago
14

NEED HELP!! What types of waves are transmitted from the H-E-L-P device ?

Chemistry
1 answer:
IrinaVladis [17]3 years ago
5 0

Answer:

What do you mean need more details

Explanation:

You might be interested in
Are plastic bags organic or inorganic? ​
Alborosie

Answer:

nilon is inorganic so they can be in the soil up to 5000 years

Explanation:

3 0
3 years ago
Read 2 more answers
1.00 pint of milk has a volume of how many milliliters
zlopas [31]
I searched it up on Google and I got 473.176    Hope this helps.

3 0
3 years ago
During photosynthesis, plant leaves take in carbon dioxide through _______ in their leaves. a stomata b xylem c phloem
Iteru [2.4K]
<h3>Answer:</h3>

Stomata

<h3>Explanation:</h3>
  • Photosynthesis refers to the process that takes place in green plants and some algae.
  • During the process, water and carbon dioxide are converted to nutrients or organic compounds using energy from sunlight.
  • The process takes place in the chloroplast on the leaves of green plants.
  • The water used during photosynthesis comes from the soil and then transported by xylem tissue to the leaves where the process takes place.
  • Carbon dioxide enters the leaves through the stomata which are the sites for gaseous exchange.
  • Sunlight is trapped by green pigments on the leaves known as chlorophyll.
7 0
3 years ago
What is the final concentration of cl- ion when 250 ml of 0.20 m cacl2 solution is mixed with 250 ml of 0.40 m kcl solution? (as
serious [3.7K]

CaCl2 and KCl are both salts which dissociate in water when dissolved. Assuming that the dissolution of the two salts are 100 percent, the half reactions are:

<span>CaCl2 ---> Ca2+  +  2 Cl-</span>

KCl ---> K+ + Cl-

Therefore the total Cl- ion concentration would be coming from both salts. First, we calculate the Cl- from each salt by using stoichiometric ratio:

Cl- from CaCl2 = (0.2 moles CaCl2/ L) (0.25 L) (2 moles Cl / 1 mole CaCl2)

Cl- from CaCl2 = 0.1 moles

 

Cl- from KCl = (0.4 moles KCl/ L) (0.25 L) (1 mole Cl / 1 mole KCl)

Cl- from KCl = 0.1 moles

 

Therefore the final concentration of Cl- in the solution mixture is:

Cl- = (0.1 moles + 0.1 moles) / (0.25 L + 0.25 L)

Cl- = 0.2 moles / 0.5 moles

<span>Cl- = 0.4 moles             (ANSWER)</span>

6 0
3 years ago
Trans-2-butene does not exhibit a signal in the double-bond region of the spectrum (1600–1850 cm−1); however, ir spectroscopy is
Elza [17]
However <em>trans</em>-2-Butene does not give a characteristic peak in 1620-1680 cm⁻¹ region but still the presence of carbon double bond carbon can be detected by detecting following peaks in IR Spectrum.

1)  3010-3100 cm⁻¹:
                               As in trans-2-Butene a hydrogen atoms ate attached to sp² hybridized carbon, therefore the stretching of =C-H (C-H) bond will give a peak of medium intensity in the range of 3010-3100 cm⁻¹.

2)  675-1000 cm⁻¹:
                             Another peak which is given by the bending of =C-H (C-H) bond with strong intensity will appear in the range of 675-1000 cm⁻¹.
3 0
3 years ago
Other questions:
  • What is the difference between a do universal law and a scientific theory
    11·1 answer
  • What is the mass of a gold bar that is 7.379*10^-4 m^3 in volume?
    13·1 answer
  • Can someone help your amiga :(??
    15·1 answer
  • Plz help me 50 points and plz no crazys things
    14·2 answers
  • I WILL GIVE EXTRA POINTS AND BRAINLIEST I JUST NEED SOMEONE TO ANSWER THIS QUESTIONS!!
    5·2 answers
  • (a) The absorbance of mixture at 400 nm was 0.40.
    9·1 answer
  • Calculate the new pressure of a gas if the gas at 50 ˚C and 81.0 kPa is heated to 100 ˚C at a constant volume.
    6·1 answer
  • One source of aluminum metal is alumina, Al2O3. a. Determine the percentage composition of Al in alumina. b. How many pounds of
    5·1 answer
  • I have this chemistry question and I’m really struggling to answer it. Can someone please help me figure out the steps &amp; the
    12·1 answer
  • C.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!